/org.apache.commons.lang/source-bundle/org/apache/commons/lang/ArrayUtils.java
Java | 4416 lines | 1583 code | 193 blank | 2640 comment | 655 complexity | 15e37024df5cb4109f45a0ea93273c82 MD5 | raw file
- /*
- * Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements. See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The ASF licenses this file to You under the Apache License, Version 2.0
- * (the "License"); you may not use this file except in compliance with
- * the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
- package org.apache.commons.lang;
- import java.lang.reflect.Array;
- import java.util.HashMap;
- import java.util.Map;
- import org.apache.commons.lang.builder.EqualsBuilder;
- import org.apache.commons.lang.builder.HashCodeBuilder;
- import org.apache.commons.lang.builder.ToStringBuilder;
- import org.apache.commons.lang.builder.ToStringStyle;
- /**
- * <p>Operations on arrays, primitive arrays (like <code>int[]</code>) and
- * primitive wrapper arrays (like <code>Integer[]</code>).</p>
- *
- * <p>This class tries to handle <code>null</code> input gracefully.
- * An exception will not be thrown for a <code>null</code>
- * array input. However, an Object array that contains a <code>null</code>
- * element may throw an exception. Each method documents its behaviour.</p>
- *
- * @author Stephen Colebourne
- * @author Moritz Petersen
- * @author <a href="mailto:fredrik@westermarck.com">Fredrik Westermarck</a>
- * @author Nikolay Metchev
- * @author Matthew Hawthorne
- * @author Tim O'Brien
- * @author Pete Gieser
- * @author Gary Gregory
- * @author <a href="mailto:equinus100@hotmail.com">Ashwin S</a>
- * @author Maarten Coene
- * @since 2.0
- * @version $Id: ArrayUtils.java 632503 2008-03-01 00:21:52Z ggregory $
- */
- public class ArrayUtils {
- /**
- * An empty immutable <code>Object</code> array.
- */
- public static final Object[] EMPTY_OBJECT_ARRAY = new Object[0];
- /**
- * An empty immutable <code>Class</code> array.
- */
- public static final Class[] EMPTY_CLASS_ARRAY = new Class[0];
- /**
- * An empty immutable <code>String</code> array.
- */
- public static final String[] EMPTY_STRING_ARRAY = new String[0];
- /**
- * An empty immutable <code>long</code> array.
- */
- public static final long[] EMPTY_LONG_ARRAY = new long[0];
- /**
- * An empty immutable <code>Long</code> array.
- */
- public static final Long[] EMPTY_LONG_OBJECT_ARRAY = new Long[0];
- /**
- * An empty immutable <code>int</code> array.
- */
- public static final int[] EMPTY_INT_ARRAY = new int[0];
- /**
- * An empty immutable <code>Integer</code> array.
- */
- public static final Integer[] EMPTY_INTEGER_OBJECT_ARRAY = new Integer[0];
- /**
- * An empty immutable <code>short</code> array.
- */
- public static final short[] EMPTY_SHORT_ARRAY = new short[0];
- /**
- * An empty immutable <code>Short</code> array.
- */
- public static final Short[] EMPTY_SHORT_OBJECT_ARRAY = new Short[0];
- /**
- * An empty immutable <code>byte</code> array.
- */
- public static final byte[] EMPTY_BYTE_ARRAY = new byte[0];
- /**
- * An empty immutable <code>Byte</code> array.
- */
- public static final Byte[] EMPTY_BYTE_OBJECT_ARRAY = new Byte[0];
- /**
- * An empty immutable <code>double</code> array.
- */
- public static final double[] EMPTY_DOUBLE_ARRAY = new double[0];
- /**
- * An empty immutable <code>Double</code> array.
- */
- public static final Double[] EMPTY_DOUBLE_OBJECT_ARRAY = new Double[0];
- /**
- * An empty immutable <code>float</code> array.
- */
- public static final float[] EMPTY_FLOAT_ARRAY = new float[0];
- /**
- * An empty immutable <code>Float</code> array.
- */
- public static final Float[] EMPTY_FLOAT_OBJECT_ARRAY = new Float[0];
- /**
- * An empty immutable <code>boolean</code> array.
- */
- public static final boolean[] EMPTY_BOOLEAN_ARRAY = new boolean[0];
- /**
- * An empty immutable <code>Boolean</code> array.
- */
- public static final Boolean[] EMPTY_BOOLEAN_OBJECT_ARRAY = new Boolean[0];
- /**
- * An empty immutable <code>char</code> array.
- */
- public static final char[] EMPTY_CHAR_ARRAY = new char[0];
- /**
- * An empty immutable <code>Character</code> array.
- */
- public static final Character[] EMPTY_CHARACTER_OBJECT_ARRAY = new Character[0];
- /**
- * The index value when an element is not found in a list or array: <code>-1</code>.
- * This value is returned by methods in this class and can also be used in comparisons with values returned by
- * various method from {@link java.util.List}.
- */
- public static final int INDEX_NOT_FOUND = -1;
- /**
- * <p>ArrayUtils instances should NOT be constructed in standard programming.
- * Instead, the class should be used as <code>ArrayUtils.clone(new int[] {2})</code>.</p>
- *
- * <p>This constructor is public to permit tools that require a JavaBean instance
- * to operate.</p>
- */
- public ArrayUtils() {
- super();
- }
-
- // Basic methods handling multi-dimensional arrays
- //-----------------------------------------------------------------------
- /**
- * <p>Outputs an array as a String, treating <code>null</code> as an empty array.</p>
- *
- * <p>Multi-dimensional arrays are handled correctly, including
- * multi-dimensional primitive arrays.</p>
- *
- * <p>The format is that of Java source code, for example <code>{a,b}</code>.</p>
- *
- * @param array the array to get a toString for, may be <code>null</code>
- * @return a String representation of the array, '{}' if null array input
- */
- public static String toString(Object array) {
- return toString(array, "{}");
- }
- /**
- * <p>Outputs an array as a String handling <code>null</code>s.</p>
- *
- * <p>Multi-dimensional arrays are handled correctly, including
- * multi-dimensional primitive arrays.</p>
- *
- * <p>The format is that of Java source code, for example <code>{a,b}</code>.</p>
- *
- * @param array the array to get a toString for, may be <code>null</code>
- * @param stringIfNull the String to return if the array is <code>null</code>
- * @return a String representation of the array
- */
- public static String toString(Object array, String stringIfNull) {
- if (array == null) {
- return stringIfNull;
- }
- return new ToStringBuilder(array, ToStringStyle.SIMPLE_STYLE).append(array).toString();
- }
- /**
- * <p>Get a hashCode for an array handling multi-dimensional arrays correctly.</p>
- *
- * <p>Multi-dimensional primitive arrays are also handled correctly by this method.</p>
- *
- * @param array the array to get a hashCode for, may be <code>null</code>
- * @return a hashCode for the array, zero if null array input
- */
- public static int hashCode(Object array) {
- return new HashCodeBuilder().append(array).toHashCode();
- }
- /**
- * <p>Compares two arrays, using equals(), handling multi-dimensional arrays
- * correctly.</p>
- *
- * <p>Multi-dimensional primitive arrays are also handled correctly by this method.</p>
- *
- * @param array1 the left hand array to compare, may be <code>null</code>
- * @param array2 the right hand array to compare, may be <code>null</code>
- * @return <code>true</code> if the arrays are equal
- */
- public static boolean isEquals(Object array1, Object array2) {
- return new EqualsBuilder().append(array1, array2).isEquals();
- }
- // To map
- //-----------------------------------------------------------------------
- /**
- * <p>Converts the given array into a {@link java.util.Map}. Each element of the array
- * must be either a {@link java.util.Map.Entry} or an Array, containing at least two
- * elements, where the first element is used as key and the second as
- * value.</p>
- *
- * <p>This method can be used to initialize:</p>
- * <pre>
- * // Create a Map mapping colors.
- * Map colorMap = MapUtils.toMap(new String[][] {{
- * {"RED", "#FF0000"},
- * {"GREEN", "#00FF00"},
- * {"BLUE", "#0000FF"}});
- * </pre>
- *
- * <p>This method returns <code>null</code> for a <code>null</code> input array.</p>
- *
- * @param array an array whose elements are either a {@link java.util.Map.Entry} or
- * an Array containing at least two elements, may be <code>null</code>
- * @return a <code>Map</code> that was created from the array
- * @throws IllegalArgumentException if one element of this Array is
- * itself an Array containing less then two elements
- * @throws IllegalArgumentException if the array contains elements other
- * than {@link java.util.Map.Entry} and an Array
- */
- public static Map toMap(Object[] array) {
- if (array == null) {
- return null;
- }
- final Map map = new HashMap((int) (array.length * 1.5));
- for (int i = 0; i < array.length; i++) {
- Object object = array[i];
- if (object instanceof Map.Entry) {
- Map.Entry entry = (Map.Entry) object;
- map.put(entry.getKey(), entry.getValue());
- } else if (object instanceof Object[]) {
- Object[] entry = (Object[]) object;
- if (entry.length < 2) {
- throw new IllegalArgumentException("Array element " + i + ", '"
- + object
- + "', has a length less than 2");
- }
- map.put(entry[0], entry[1]);
- } else {
- throw new IllegalArgumentException("Array element " + i + ", '"
- + object
- + "', is neither of type Map.Entry nor an Array");
- }
- }
- return map;
- }
- // Clone
- //-----------------------------------------------------------------------
- /**
- * <p>Shallow clones an array returning a typecast result and handling
- * <code>null</code>.</p>
- *
- * <p>The objects in the array are not cloned, thus there is no special
- * handling for multi-dimensional arrays.</p>
- *
- * <p>This method returns <code>null</code> for a <code>null</code> input array.</p>
- *
- * @param array the array to shallow clone, may be <code>null</code>
- * @return the cloned array, <code>null</code> if <code>null</code> input
- */
- public static Object[] clone(Object[] array) {
- if (array == null) {
- return null;
- }
- return (Object[]) array.clone();
- }
- /**
- * <p>Clones an array returning a typecast result and handling
- * <code>null</code>.</p>
- *
- * <p>This method returns <code>null</code> for a <code>null</code> input array.</p>
- *
- * @param array the array to clone, may be <code>null</code>
- * @return the cloned array, <code>null</code> if <code>null</code> input
- */
- public static long[] clone(long[] array) {
- if (array == null) {
- return null;
- }
- return (long[]) array.clone();
- }
- /**
- * <p>Clones an array returning a typecast result and handling
- * <code>null</code>.</p>
- *
- * <p>This method returns <code>null</code> for a <code>null</code> input array.</p>
- *
- * @param array the array to clone, may be <code>null</code>
- * @return the cloned array, <code>null</code> if <code>null</code> input
- */
- public static int[] clone(int[] array) {
- if (array == null) {
- return null;
- }
- return (int[]) array.clone();
- }
- /**
- * <p>Clones an array returning a typecast result and handling
- * <code>null</code>.</p>
- *
- * <p>This method returns <code>null</code> for a <code>null</code> input array.</p>
- *
- * @param array the array to clone, may be <code>null</code>
- * @return the cloned array, <code>null</code> if <code>null</code> input
- */
- public static short[] clone(short[] array) {
- if (array == null) {
- return null;
- }
- return (short[]) array.clone();
- }
- /**
- * <p>Clones an array returning a typecast result and handling
- * <code>null</code>.</p>
- *
- * <p>This method returns <code>null</code> for a <code>null</code> input array.</p>
- *
- * @param array the array to clone, may be <code>null</code>
- * @return the cloned array, <code>null</code> if <code>null</code> input
- */
- public static char[] clone(char[] array) {
- if (array == null) {
- return null;
- }
- return (char[]) array.clone();
- }
- /**
- * <p>Clones an array returning a typecast result and handling
- * <code>null</code>.</p>
- *
- * <p>This method returns <code>null</code> for a <code>null</code> input array.</p>
- *
- * @param array the array to clone, may be <code>null</code>
- * @return the cloned array, <code>null</code> if <code>null</code> input
- */
- public static byte[] clone(byte[] array) {
- if (array == null) {
- return null;
- }
- return (byte[]) array.clone();
- }
- /**
- * <p>Clones an array returning a typecast result and handling
- * <code>null</code>.</p>
- *
- * <p>This method returns <code>null</code> for a <code>null</code> input array.</p>
- *
- * @param array the array to clone, may be <code>null</code>
- * @return the cloned array, <code>null</code> if <code>null</code> input
- */
- public static double[] clone(double[] array) {
- if (array == null) {
- return null;
- }
- return (double[]) array.clone();
- }
- /**
- * <p>Clones an array returning a typecast result and handling
- * <code>null</code>.</p>
- *
- * <p>This method returns <code>null</code> for a <code>null</code> input array.</p>
- *
- * @param array the array to clone, may be <code>null</code>
- * @return the cloned array, <code>null</code> if <code>null</code> input
- */
- public static float[] clone(float[] array) {
- if (array == null) {
- return null;
- }
- return (float[]) array.clone();
- }
- /**
- * <p>Clones an array returning a typecast result and handling
- * <code>null</code>.</p>
- *
- * <p>This method returns <code>null</code> for a <code>null</code> input array.</p>
- *
- * @param array the array to clone, may be <code>null</code>
- * @return the cloned array, <code>null</code> if <code>null</code> input
- */
- public static boolean[] clone(boolean[] array) {
- if (array == null) {
- return null;
- }
- return (boolean[]) array.clone();
- }
- // Subarrays
- //-----------------------------------------------------------------------
- /**
- * <p>Produces a new array containing the elements between
- * the start and end indices.</p>
- *
- * <p>The start index is inclusive, the end index exclusive.
- * Null array input produces null output.</p>
- *
- * <p>The component type of the subarray is always the same as
- * that of the input array. Thus, if the input is an array of type
- * <code>Date</code>, the following usage is envisaged:</p>
- *
- * <pre>
- * Date[] someDates = (Date[])ArrayUtils.subarray(allDates, 2, 5);
- * </pre>
- *
- * @param array the array
- * @param startIndexInclusive the starting index. Undervalue (<0)
- * is promoted to 0, overvalue (>array.length) results
- * in an empty array.
- * @param endIndexExclusive elements up to endIndex-1 are present in the
- * returned subarray. Undervalue (< startIndex) produces
- * empty array, overvalue (>array.length) is demoted to
- * array length.
- * @return a new array containing the elements between
- * the start and end indices.
- * @since 2.1
- */
- public static Object[] subarray(Object[] array, int startIndexInclusive, int endIndexExclusive) {
- if (array == null) {
- return null;
- }
- if (startIndexInclusive < 0) {
- startIndexInclusive = 0;
- }
- if (endIndexExclusive > array.length) {
- endIndexExclusive = array.length;
- }
- int newSize = endIndexExclusive - startIndexInclusive;
- Class type = array.getClass().getComponentType();
- if (newSize <= 0) {
- return (Object[]) Array.newInstance(type, 0);
- }
- Object[] subarray = (Object[]) Array.newInstance(type, newSize);
- System.arraycopy(array, startIndexInclusive, subarray, 0, newSize);
- return subarray;
- }
- /**
- * <p>Produces a new <code>long</code> array containing the elements
- * between the start and end indices.</p>
- *
- * <p>The start index is inclusive, the end index exclusive.
- * Null array input produces null output.</p>
- *
- * @param array the array
- * @param startIndexInclusive the starting index. Undervalue (<0)
- * is promoted to 0, overvalue (>array.length) results
- * in an empty array.
- * @param endIndexExclusive elements up to endIndex-1 are present in the
- * returned subarray. Undervalue (< startIndex) produces
- * empty array, overvalue (>array.length) is demoted to
- * array length.
- * @return a new array containing the elements between
- * the start and end indices.
- * @since 2.1
- */
- public static long[] subarray(long[] array, int startIndexInclusive, int endIndexExclusive) {
- if (array == null) {
- return null;
- }
- if (startIndexInclusive < 0) {
- startIndexInclusive = 0;
- }
- if (endIndexExclusive > array.length) {
- endIndexExclusive = array.length;
- }
- int newSize = endIndexExclusive - startIndexInclusive;
- if (newSize <= 0) {
- return EMPTY_LONG_ARRAY;
- }
- long[] subarray = new long[newSize];
- System.arraycopy(array, startIndexInclusive, subarray, 0, newSize);
- return subarray;
- }
- /**
- * <p>Produces a new <code>int</code> array containing the elements
- * between the start and end indices.</p>
- *
- * <p>The start index is inclusive, the end index exclusive.
- * Null array input produces null output.</p>
- *
- * @param array the array
- * @param startIndexInclusive the starting index. Undervalue (<0)
- * is promoted to 0, overvalue (>array.length) results
- * in an empty array.
- * @param endIndexExclusive elements up to endIndex-1 are present in the
- * returned subarray. Undervalue (< startIndex) produces
- * empty array, overvalue (>array.length) is demoted to
- * array length.
- * @return a new array containing the elements between
- * the start and end indices.
- * @since 2.1
- */
- public static int[] subarray(int[] array, int startIndexInclusive, int endIndexExclusive) {
- if (array == null) {
- return null;
- }
- if (startIndexInclusive < 0) {
- startIndexInclusive = 0;
- }
- if (endIndexExclusive > array.length) {
- endIndexExclusive = array.length;
- }
- int newSize = endIndexExclusive - startIndexInclusive;
- if (newSize <= 0) {
- return EMPTY_INT_ARRAY;
- }
- int[] subarray = new int[newSize];
- System.arraycopy(array, startIndexInclusive, subarray, 0, newSize);
- return subarray;
- }
- /**
- * <p>Produces a new <code>short</code> array containing the elements
- * between the start and end indices.</p>
- *
- * <p>The start index is inclusive, the end index exclusive.
- * Null array input produces null output.</p>
- *
- * @param array the array
- * @param startIndexInclusive the starting index. Undervalue (<0)
- * is promoted to 0, overvalue (>array.length) results
- * in an empty array.
- * @param endIndexExclusive elements up to endIndex-1 are present in the
- * returned subarray. Undervalue (< startIndex) produces
- * empty array, overvalue (>array.length) is demoted to
- * array length.
- * @return a new array containing the elements between
- * the start and end indices.
- * @since 2.1
- */
- public static short[] subarray(short[] array, int startIndexInclusive, int endIndexExclusive) {
- if (array == null) {
- return null;
- }
- if (startIndexInclusive < 0) {
- startIndexInclusive = 0;
- }
- if (endIndexExclusive > array.length) {
- endIndexExclusive = array.length;
- }
- int newSize = endIndexExclusive - startIndexInclusive;
- if (newSize <= 0) {
- return EMPTY_SHORT_ARRAY;
- }
- short[] subarray = new short[newSize];
- System.arraycopy(array, startIndexInclusive, subarray, 0, newSize);
- return subarray;
- }
- /**
- * <p>Produces a new <code>char</code> array containing the elements
- * between the start and end indices.</p>
- *
- * <p>The start index is inclusive, the end index exclusive.
- * Null array input produces null output.</p>
- *
- * @param array the array
- * @param startIndexInclusive the starting index. Undervalue (<0)
- * is promoted to 0, overvalue (>array.length) results
- * in an empty array.
- * @param endIndexExclusive elements up to endIndex-1 are present in the
- * returned subarray. Undervalue (< startIndex) produces
- * empty array, overvalue (>array.length) is demoted to
- * array length.
- * @return a new array containing the elements between
- * the start and end indices.
- * @since 2.1
- */
- public static char[] subarray(char[] array, int startIndexInclusive, int endIndexExclusive) {
- if (array == null) {
- return null;
- }
- if (startIndexInclusive < 0) {
- startIndexInclusive = 0;
- }
- if (endIndexExclusive > array.length) {
- endIndexExclusive = array.length;
- }
- int newSize = endIndexExclusive - startIndexInclusive;
- if (newSize <= 0) {
- return EMPTY_CHAR_ARRAY;
- }
- char[] subarray = new char[newSize];
- System.arraycopy(array, startIndexInclusive, subarray, 0, newSize);
- return subarray;
- }
- /**
- * <p>Produces a new <code>byte</code> array containing the elements
- * between the start and end indices.</p>
- *
- * <p>The start index is inclusive, the end index exclusive.
- * Null array input produces null output.</p>
- *
- * @param array the array
- * @param startIndexInclusive the starting index. Undervalue (<0)
- * is promoted to 0, overvalue (>array.length) results
- * in an empty array.
- * @param endIndexExclusive elements up to endIndex-1 are present in the
- * returned subarray. Undervalue (< startIndex) produces
- * empty array, overvalue (>array.length) is demoted to
- * array length.
- * @return a new array containing the elements between
- * the start and end indices.
- * @since 2.1
- */
- public static byte[] subarray(byte[] array, int startIndexInclusive, int endIndexExclusive) {
- if (array == null) {
- return null;
- }
- if (startIndexInclusive < 0) {
- startIndexInclusive = 0;
- }
- if (endIndexExclusive > array.length) {
- endIndexExclusive = array.length;
- }
- int newSize = endIndexExclusive - startIndexInclusive;
- if (newSize <= 0) {
- return EMPTY_BYTE_ARRAY;
- }
- byte[] subarray = new byte[newSize];
- System.arraycopy(array, startIndexInclusive, subarray, 0, newSize);
- return subarray;
- }
- /**
- * <p>Produces a new <code>double</code> array containing the elements
- * between the start and end indices.</p>
- *
- * <p>The start index is inclusive, the end index exclusive.
- * Null array input produces null output.</p>
- *
- * @param array the array
- * @param startIndexInclusive the starting index. Undervalue (<0)
- * is promoted to 0, overvalue (>array.length) results
- * in an empty array.
- * @param endIndexExclusive elements up to endIndex-1 are present in the
- * returned subarray. Undervalue (< startIndex) produces
- * empty array, overvalue (>array.length) is demoted to
- * array length.
- * @return a new array containing the elements between
- * the start and end indices.
- * @since 2.1
- */
- public static double[] subarray(double[] array, int startIndexInclusive, int endIndexExclusive) {
- if (array == null) {
- return null;
- }
- if (startIndexInclusive < 0) {
- startIndexInclusive = 0;
- }
- if (endIndexExclusive > array.length) {
- endIndexExclusive = array.length;
- }
- int newSize = endIndexExclusive - startIndexInclusive;
- if (newSize <= 0) {
- return EMPTY_DOUBLE_ARRAY;
- }
- double[] subarray = new double[newSize];
- System.arraycopy(array, startIndexInclusive, subarray, 0, newSize);
- return subarray;
- }
- /**
- * <p>Produces a new <code>float</code> array containing the elements
- * between the start and end indices.</p>
- *
- * <p>The start index is inclusive, the end index exclusive.
- * Null array input produces null output.</p>
- *
- * @param array the array
- * @param startIndexInclusive the starting index. Undervalue (<0)
- * is promoted to 0, overvalue (>array.length) results
- * in an empty array.
- * @param endIndexExclusive elements up to endIndex-1 are present in the
- * returned subarray. Undervalue (< startIndex) produces
- * empty array, overvalue (>array.length) is demoted to
- * array length.
- * @return a new array containing the elements between
- * the start and end indices.
- * @since 2.1
- */
- public static float[] subarray(float[] array, int startIndexInclusive, int endIndexExclusive) {
- if (array == null) {
- return null;
- }
- if (startIndexInclusive < 0) {
- startIndexInclusive = 0;
- }
- if (endIndexExclusive > array.length) {
- endIndexExclusive = array.length;
- }
- int newSize = endIndexExclusive - startIndexInclusive;
- if (newSize <= 0) {
- return EMPTY_FLOAT_ARRAY;
- }
- float[] subarray = new float[newSize];
- System.arraycopy(array, startIndexInclusive, subarray, 0, newSize);
- return subarray;
- }
- /**
- * <p>Produces a new <code>boolean</code> array containing the elements
- * between the start and end indices.</p>
- *
- * <p>The start index is inclusive, the end index exclusive.
- * Null array input produces null output.</p>
- *
- * @param array the array
- * @param startIndexInclusive the starting index. Undervalue (<0)
- * is promoted to 0, overvalue (>array.length) results
- * in an empty array.
- * @param endIndexExclusive elements up to endIndex-1 are present in the
- * returned subarray. Undervalue (< startIndex) produces
- * empty array, overvalue (>array.length) is demoted to
- * array length.
- * @return a new array containing the elements between
- * the start and end indices.
- * @since 2.1
- */
- public static boolean[] subarray(boolean[] array, int startIndexInclusive, int endIndexExclusive) {
- if (array == null) {
- return null;
- }
- if (startIndexInclusive < 0) {
- startIndexInclusive = 0;
- }
- if (endIndexExclusive > array.length) {
- endIndexExclusive = array.length;
- }
- int newSize = endIndexExclusive - startIndexInclusive;
- if (newSize <= 0) {
- return EMPTY_BOOLEAN_ARRAY;
- }
- boolean[] subarray = new boolean[newSize];
- System.arraycopy(array, startIndexInclusive, subarray, 0, newSize);
- return subarray;
- }
- // Is same length
- //-----------------------------------------------------------------------
- /**
- * <p>Checks whether two arrays are the same length, treating
- * <code>null</code> arrays as length <code>0</code>.
- *
- * <p>Any multi-dimensional aspects of the arrays are ignored.</p>
- *
- * @param array1 the first array, may be <code>null</code>
- * @param array2 the second array, may be <code>null</code>
- * @return <code>true</code> if length of arrays matches, treating
- * <code>null</code> as an empty array
- */
- public static boolean isSameLength(Object[] array1, Object[] array2) {
- if ((array1 == null && array2 != null && array2.length > 0) ||
- (array2 == null && array1 != null && array1.length > 0) ||
- (array1 != null && array2 != null && array1.length != array2.length)) {
- return false;
- }
- return true;
- }
- /**
- * <p>Checks whether two arrays are the same length, treating
- * <code>null</code> arrays as length <code>0</code>.</p>
- *
- * @param array1 the first array, may be <code>null</code>
- * @param array2 the second array, may be <code>null</code>
- * @return <code>true</code> if length of arrays matches, treating
- * <code>null</code> as an empty array
- */
- public static boolean isSameLength(long[] array1, long[] array2) {
- if ((array1 == null && array2 != null && array2.length > 0) ||
- (array2 == null && array1 != null && array1.length > 0) ||
- (array1 != null && array2 != null && array1.length != array2.length)) {
- return false;
- }
- return true;
- }
- /**
- * <p>Checks whether two arrays are the same length, treating
- * <code>null</code> arrays as length <code>0</code>.</p>
- *
- * @param array1 the first array, may be <code>null</code>
- * @param array2 the second array, may be <code>null</code>
- * @return <code>true</code> if length of arrays matches, treating
- * <code>null</code> as an empty array
- */
- public static boolean isSameLength(int[] array1, int[] array2) {
- if ((array1 == null && array2 != null && array2.length > 0) ||
- (array2 == null && array1 != null && array1.length > 0) ||
- (array1 != null && array2 != null && array1.length != array2.length)) {
- return false;
- }
- return true;
- }
- /**
- * <p>Checks whether two arrays are the same length, treating
- * <code>null</code> arrays as length <code>0</code>.</p>
- *
- * @param array1 the first array, may be <code>null</code>
- * @param array2 the second array, may be <code>null</code>
- * @return <code>true</code> if length of arrays matches, treating
- * <code>null</code> as an empty array
- */
- public static boolean isSameLength(short[] array1, short[] array2) {
- if ((array1 == null && array2 != null && array2.length > 0) ||
- (array2 == null && array1 != null && array1.length > 0) ||
- (array1 != null && array2 != null && array1.length != array2.length)) {
- return false;
- }
- return true;
- }
- /**
- * <p>Checks whether two arrays are the same length, treating
- * <code>null</code> arrays as length <code>0</code>.</p>
- *
- * @param array1 the first array, may be <code>null</code>
- * @param array2 the second array, may be <code>null</code>
- * @return <code>true</code> if length of arrays matches, treating
- * <code>null</code> as an empty array
- */
- public static boolean isSameLength(char[] array1, char[] array2) {
- if ((array1 == null && array2 != null && array2.length > 0) ||
- (array2 == null && array1 != null && array1.length > 0) ||
- (array1 != null && array2 != null && array1.length != array2.length)) {
- return false;
- }
- return true;
- }
- /**
- * <p>Checks whether two arrays are the same length, treating
- * <code>null</code> arrays as length <code>0</code>.</p>
- *
- * @param array1 the first array, may be <code>null</code>
- * @param array2 the second array, may be <code>null</code>
- * @return <code>true</code> if length of arrays matches, treating
- * <code>null</code> as an empty array
- */
- public static boolean isSameLength(byte[] array1, byte[] array2) {
- if ((array1 == null && array2 != null && array2.length > 0) ||
- (array2 == null && array1 != null && array1.length > 0) ||
- (array1 != null && array2 != null && array1.length != array2.length)) {
- return false;
- }
- return true;
- }
- /**
- * <p>Checks whether two arrays are the same length, treating
- * <code>null</code> arrays as length <code>0</code>.</p>
- *
- * @param array1 the first array, may be <code>null</code>
- * @param array2 the second array, may be <code>null</code>
- * @return <code>true</code> if length of arrays matches, treating
- * <code>null</code> as an empty array
- */
- public static boolean isSameLength(double[] array1, double[] array2) {
- if ((array1 == null && array2 != null && array2.length > 0) ||
- (array2 == null && array1 != null && array1.length > 0) ||
- (array1 != null && array2 != null && array1.length != array2.length)) {
- return false;
- }
- return true;
- }
- /**
- * <p>Checks whether two arrays are the same length, treating
- * <code>null</code> arrays as length <code>0</code>.</p>
- *
- * @param array1 the first array, may be <code>null</code>
- * @param array2 the second array, may be <code>null</code>
- * @return <code>true</code> if length of arrays matches, treating
- * <code>null</code> as an empty array
- */
- public static boolean isSameLength(float[] array1, float[] array2) {
- if ((array1 == null && array2 != null && array2.length > 0) ||
- (array2 == null && array1 != null && array1.length > 0) ||
- (array1 != null && array2 != null && array1.length != array2.length)) {
- return false;
- }
- return true;
- }
- /**
- * <p>Checks whether two arrays are the same length, treating
- * <code>null</code> arrays as length <code>0</code>.</p>
- *
- * @param array1 the first array, may be <code>null</code>
- * @param array2 the second array, may be <code>null</code>
- * @return <code>true</code> if length of arrays matches, treating
- * <code>null</code> as an empty array
- */
- public static boolean isSameLength(boolean[] array1, boolean[] array2) {
- if ((array1 == null && array2 != null && array2.length > 0) ||
- (array2 == null && array1 != null && array1.length > 0) ||
- (array1 != null && array2 != null && array1.length != array2.length)) {
- return false;
- }
- return true;
- }
- //-----------------------------------------------------------------------
- /**
- * <p>Returns the length of the specified array.
- * This method can deal with <code>Object</code> arrays and with primitive arrays.</p>
- *
- * <p>If the input array is <code>null</code>, <code>0</code> is returned.</p>
- *
- * <pre>
- * ArrayUtils.getLength(null) = 0
- * ArrayUtils.getLength([]) = 0
- * ArrayUtils.getLength([null]) = 1
- * ArrayUtils.getLength([true, false]) = 2
- * ArrayUtils.getLength([1, 2, 3]) = 3
- * ArrayUtils.getLength(["a", "b", "c"]) = 3
- * </pre>
- *
- * @param array the array to retrieve the length from, may be null
- * @return The length of the array, or <code>0</code> if the array is <code>null</code>
- * @throws IllegalArgumentException if the object arguement is not an array.
- * @since 2.1
- */
- public static int getLength(Object array) {
- if (array == null) {
- return 0;
- }
- return Array.getLength(array);
- }
- /**
- * <p>Checks whether two arrays are the same type taking into account
- * multi-dimensional arrays.</p>
- *
- * @param array1 the first array, must not be <code>null</code>
- * @param array2 the second array, must not be <code>null</code>
- * @return <code>true</code> if type of arrays matches
- * @throws IllegalArgumentException if either array is <code>null</code>
- */
- public static boolean isSameType(Object array1, Object array2) {
- if (array1 == null || array2 == null) {
- throw new IllegalArgumentException("The Array must not be null");
- }
- return array1.getClass().getName().equals(array2.getClass().getName());
- }
- // Reverse
- //-----------------------------------------------------------------------
- /**
- * <p>Reverses the order of the given array.</p>
- *
- * <p>There is no special handling for multi-dimensional arrays.</p>
- *
- * <p>This method does nothing for a <code>null</code> input array.</p>
- *
- * @param array the array to reverse, may be <code>null</code>
- */
- public static void reverse(Object[] array) {
- if (array == null) {
- return;
- }
- int i = 0;
- int j = array.length - 1;
- Object tmp;
- while (j > i) {
- tmp = array[j];
- array[j] = array[i];
- array[i] = tmp;
- j--;
- i++;
- }
- }
- /**
- * <p>Reverses the order of the given array.</p>
- *
- * <p>This method does nothing for a <code>null</code> input array.</p>
- *
- * @param array the array to reverse, may be <code>null</code>
- */
- public static void reverse(long[] array) {
- if (array == null) {
- return;
- }
- int i = 0;
- int j = array.length - 1;
- long tmp;
- while (j > i) {
- tmp = array[j];
- array[j] = array[i];
- array[i] = tmp;
- j--;
- i++;
- }
- }
- /**
- * <p>Reverses the order of the given array.</p>
- *
- * <p>This method does nothing for a <code>null</code> input array.</p>
- *
- * @param array the array to reverse, may be <code>null</code>
- */
- public static void reverse(int[] array) {
- if (array == null) {
- return;
- }
- int i = 0;
- int j = array.length - 1;
- int tmp;
- while (j > i) {
- tmp = array[j];
- array[j] = array[i];
- array[i] = tmp;
- j--;
- i++;
- }
- }
- /**
- * <p>Reverses the order of the given array.</p>
- *
- * <p>This method does nothing for a <code>null</code> input array.</p>
- *
- * @param array the array to reverse, may be <code>null</code>
- */
- public static void reverse(short[] array) {
- if (array == null) {
- return;
- }
- int i = 0;
- int j = array.length - 1;
- short tmp;
- while (j > i) {
- tmp = array[j];
- array[j] = array[i];
- array[i] = tmp;
- j--;
- i++;
- }
- }
- /**
- * <p>Reverses the order of the given array.</p>
- *
- * <p>This method does nothing for a <code>null</code> input array.</p>
- *
- * @param array the array to reverse, may be <code>null</code>
- */
- public static void reverse(char[] array) {
- if (array == null) {
- return;
- }
- int i = 0;
- int j = array.length - 1;
- char tmp;
- while (j > i) {
- tmp = array[j];
- array[j] = array[i];
- array[i] = tmp;
- j--;
- i++;
- }
- }
- /**
- * <p>Reverses the order of the given array.</p>
- *
- * <p>This method does nothing for a <code>null</code> input array.</p>
- *
- * @param array the array to reverse, may be <code>null</code>
- */
- public static void reverse(byte[] array) {
- if (array == null) {
- return;
- }
- int i = 0;
- int j = array.length - 1;
- byte tmp;
- while (j > i) {
- tmp = array[j];
- array[j] = array[i];
- array[i] = tmp;
- j--;
- i++;
- }
- }
- /**
- * <p>Reverses the order of the given array.</p>
- *
- * <p>This method does nothing for a <code>null</code> input array.</p>
- *
- * @param array the array to reverse, may be <code>null</code>
- */
- public static void reverse(double[] array) {
- if (array == null) {
- return;
- }
- int i = 0;
- int j = array.length - 1;
- double tmp;
- while (j > i) {
- tmp = array[j];
- array[j] = array[i];
- array[i] = tmp;
- j--;
- i++;
- }
- }
- /**
- * <p>Reverses the order of the given array.</p>
- *
- * <p>This method does nothing for a <code>null</code> input array.</p>
- *
- * @param array the array to reverse, may be <code>null</code>
- */
- public static void reverse(float[] array) {
- if (array == null) {
- return;
- }
- int i = 0;
- int j = array.length - 1;
- float tmp;
- while (j > i) {
- tmp = array[j];
- array[j] = array[i];
- array[i] = tmp;
- j--;
- i++;
- }
- }
- /**
- * <p>Reverses the order of the given array.</p>
- *
- * <p>This method does nothing for a <code>null</code> input array.</p>
- *
- * @param array the array to reverse, may be <code>null</code>
- */
- public static void reverse(boolean[] array) {
- if (array == null) {
- return;
- }
- int i = 0;
- int j = array.length - 1;
- boolean tmp;
- while (j > i) {
- tmp = array[j];
- array[j] = array[i];
- array[i] = tmp;
- j--;
- i++;
- }
- }
- // IndexOf search
- // ----------------------------------------------------------------------
-
- // Object IndexOf
- //-----------------------------------------------------------------------
- /**
- * <p>Finds the index of the given object in the array.</p>
- *
- * <p>This method returns {@link #INDEX_NOT_FOUND} (<code>-1</code>) for a <code>null</code> input array.</p>
- *
- * @param array the array to search through for the object, may be <code>null</code>
- * @param objectToFind the object to find, may be <code>null</code>
- * @return the index of the object within the array,
- * {@link #INDEX_NOT_FOUND} (<code>-1</code>) if not found or <code>null</code> array input
- */
- public static int indexOf(Object[] array, Object objectToFind) {
- return indexOf(array, objectToFind, 0);
- }
- /**
- * <p>Finds the index of the given object in the array starting at the given index.</p>
- *
- * <p>This method returns {@link #INDEX_NOT_FOUND} (<code>-1</code>) for a <code>null</code> input array.</p>
- *
- * <p>A negative startIndex is treated as zero. A startIndex larger than the array
- * length will return {@link #INDEX_NOT_FOUND} (<code>-1</code>).</p>
- *
- * @param array the array to search through for the object, may be <code>null</code>
- * @param objectToFind the object to find, may be <code>null</code>
- * @param startIndex the index to start searching at
- * @return the index of the object within the array starting at the index,
- * {@link #INDEX_NOT_FOUND} (<code>-1</code>) if not found or <code>null</code> array input
- */
- public static int indexOf(Object[] array, Object objectToFind, int startIndex) {
- if (array == null) {
- return INDEX_NOT_FOUND;
- }
- if (startIndex < 0) {
- startIndex = 0;
- }
- if (objectToFind == null) {
- for (int i = startIndex; i < array.length; i++) {
- if (array[i] == null) {
- return i;
- }
- }
- } else {
- for (int i = startIndex; i < array.length; i++) {
- if (objectToFind.equals(array[i])) {
- return i;
- }
- }
- }
- return INDEX_NOT_FOUND;
- }
- /**
- * <p>Finds the last index of the given object within the array.</p>
- *
- * <p>This method returns {@link #INDEX_NOT_FOUND} (<code>-1</code>) for a <code>null</code> input array.</p>
- *
- * @param array the array to travers backwords looking for the object, may be <code>null</code>
- * @param objectToFind the object to find, may be <code>null</code>
- * @return the last index of the object within the array,
- * {@link #INDEX_NOT_FOUND} (<code>-1</code>) if not found or <code>null</code> array input
- */
- public static int lastIndexOf(Object[] array, Object objectToFind) {
- return lastIndexOf(array, objectToFind, Integer.MAX_VALUE);
- }
- /**
- * <p>Finds the last index of the given object in the array starting at the given index.</p>
- *
- * <p>This method returns {@link #INDEX_NOT_FOUND} (<code>-1</code>) for a <code>null</code> input array.</p>
- *
- * <p>A negative startIndex will return {@link #INDEX_NOT_FOUND} (<code>-1</code>). A startIndex larger than
- * the array length will search from the end of the array.</p>
- *
- * @param array the array to traverse for looking for the object, may be <code>null</code>
- * @param objectToFind the object to find, may be <code>null</code>
- * @param startIndex the start index to travers backwards from
- * @return the last index of the object within the array,
- * {@link #INDEX_NOT_FOUND} (<code>-1</code>) if not found or <code>null</code> array input
- */
- public static int lastIndexOf(Object[] array, Object objectToFind, int startIndex) {
- if (array == null) {
- return INDEX_NOT_FOUND;
- }
- if (startIndex < 0) {
- return INDEX_NOT_FOUND;
- } else if (startIndex >= array.length) {
- startIndex = array.length - 1;
- }
- if (objectToFind == null) {
- for (int i = startIndex; i >= 0; i--) {
- if (array[i] == null) {
- return i;
- }
- }
- } else {
- for (int i = startIndex; i >= 0; i--) {
- if (objectToFind.equals(array[i])) {
- return i;
- }
- }
- }
- return INDEX_NOT_FOUND;
- }
- /**
- * <p>Checks if the object is in the given array.</p>
- *
- * <p>The method returns <code>false</code> if a <code>null</code> array is passed in.</p>
- *
- * @param array the array to search through
- * @param objectToFind the object to find
- * @return <code>true</code> if the array contains the object
- */
- public static boolean contains(Object[] array, Object objectToFind) {
- return indexOf(array, objectToFind) != INDEX_NOT_FOUND;
- }
- // long IndexOf
- //-----------------------------------------------------------------------
- /**
- * <p>Finds the index of the given value in the array.</p>
- *
- * <p>This method returns {@link #INDEX_NOT_FOUND} (<code>-1</code>) for a <code>null</code> input array.</p>
- *
- * @param array the array to search through for the object, may be <code>null</code>
- * @param valueToFind the value to find
- * @return the index of the value within the array,
- * {@link #INDEX_NOT_FOUND} (<code>-1</code>) if not found or <code>null</code> array input
- */
- public static int indexOf(long[] array, long valueToFind) {
- return indexOf(array, valueToFind, 0);
- }
- /**
- * <p>Finds the index of the given value in the array starting at the given index.</p>
- *
- * <p>This method returns {@link #INDEX_NOT_FOUND} (<code>-1</code>) for a <code>null</code> input array.</p>
- *
- * <p>A negative startIndex is treated as zero. A startIndex larger than the array
- * length will return {@link #INDEX_NOT_FOUND} (<code>-1</code>).</p>
- *
- * @param array the array to search through for the object, may be <code>null</code>
- * @param valueToFind the value to find
- * @param startIndex the index to start searching at
- * @return the index of the value within the array,
- * {@link #INDEX_NOT_FOUND} (<code>-1</code>) if not found or <code>null</code> array input
- */
- public static int indexOf(long[] array, long valueToFind, int startIndex) {
- if (array == null) {
- return INDEX_NOT_FOUND;
- }
- if (startIndex < 0) {
- startIndex = 0;
- }
- for (int i = startIndex; i < array.length; i++) {
- if (valueToFind == array[i]) {
- return i;
- }
- }
- return INDEX_NOT_FOUND;
- }
- /**
- * <p>Finds the last index of the given value within the array.</p>
- *
- * <p>This method returns {@link #INDEX_NOT_FOUND} (<code>-1</code>) for a <code>null</code> input array.</p>
- *
- * @param array the array to travers backwords looking for the object, may be <code>null</code>
- * @param valueToFind the object to find
- * @return the last index of the value within the array,
- * {@link #INDEX_NOT_FOUND} (<code>-1</code>) if not found or <code>null</code> array input
- */
- public static int lastIndexOf(long[] array, long valueToFind) {
- return lastIndexOf(array, valueToFind, Integer.MAX_VALUE);
- }
- /**
- * <p>Finds the last index of the given value in the array starting at the given index.</p>
- *
- * <p>This method returns {@link #INDEX_NOT_FOUND} (<code>-1</code>) for a <code>null</code> input array.</p>
- *
- * <p>A negative startIndex will return {@link #INDEX_NOT_FOUND} (<code>-1</code>). A startIndex larger than the
- * array length will search from the end of the array.</p>
- *
- * @param array the array to traverse for looking for the object, may be <code>null</code>
- * @param valueToFind the value to find
- * @param startIndex the start index to travers backwards from
- * @return the last index of the value within the array,
- * {@link #INDEX_NOT_FOUND} (<code>-1</code>) if not found or <code>null</code> array input
- */
- public static int lastIndexOf(long[] array, long valueToFind, int startIndex) {
- if (array == null) {
- return INDEX_NOT_FOUND;
- }
- if (startIndex < 0) {
- return INDEX_NOT_FOUND;
- } else if (startIndex >= array.length) {
- startIndex = array.length - 1;
- }
- for (int i = startIndex; i >= 0; i--) {
- if (valueToFind == array[i]) {
- return i;
- }
- }
- return INDEX_NOT_FOUND;
- }
- /**
- * <p>Checks if the value is in the given array.</p>
- *
- * <p>The method returns <code>false</code> if a <code>null</code> array is passed in.</p>
- *
- * @param array the array to search through
- * @param valueToFind the value to find
- * @return <code>true</code> if the array contains the object
- */
- public static boolean contains(long[] array, long valueToFind) {
- return indexOf(array, valueToFind) != INDEX_NOT_FOUND;
- }
- // int IndexOf
- //-----------------------------------------------------------------------
- /**
- * <p>Finds the index of the given value in the array.</p>
- *
- * <p>This method returns {@link #INDEX_NOT_FOUND} (<code>-1</code>) for a <code>null</code> input array.</p>
- *
- * @param array the array to search through for the object, may be <code>null</code>
- * @param valueToFind the value to find
- * @return the index of the value within the array,
- * {@link #INDEX_NOT_FOUND} (<code>-1</code>) if not found or <code>null</code> array input
- */
- public static int indexOf(int[] array, int valueToFind) {
- return indexOf(array, valueToFind, 0);
- }
- /**
- * <p>Finds the index of the given value in the array starting at the given index.</p>
- *
- * <p>This method returns {@link #INDEX_NOT_FOUND} (<code>-1</code>) for a <code>null</code> input array.</p>
- *
- * <p>A negative startIndex is treated as zero. A startIndex larger than the array
- * length will return {@link #INDEX_NOT_FOUND} (<code>-1</code>).</p>
- *
- * @param array the array to search through for the object, may be <code>null</code>
- * @param valueToFind the value to find
- * @param startIndex the index to start searching at
- * @return the index of the value within the array,
- * {@link #INDEX_NOT_FOUND} (<code>-1</code>) if not found or <code>null</code> array input
- */
- public static int indexOf(int[] array, int valueToFind, int startIndex) {
- if (array == null) {
- return INDEX_NOT_FOUND;
- }
- if (startIndex < 0) {
- startIndex = 0;
- }
- for (int i = startIndex; i < array.length; i++) {
- if (valueToFind == array[i]) {
- return i;
- }
- }
- return INDEX_NOT_FOUND;
- }
- /**
- * <p>Finds the last index of the given value within the array.</p>
- *
- * <p>This method returns {@link #INDEX_NOT_FOUND} (<code>-1</code>) for a <code>null</code> input array.</p>
- *
- * @param array the array to travers backwords looking for the object, may be <code>null</code>
- * @param valueToFind the object to find
- * @return the last index of the value within the array,
- * {@link #INDEX_NOT_FOUND} (<code>-1</code>) if not found or <code>null</code> array input
- */
- public static int lastIndexOf(int[] array, int valueToFind) {
- return lastIndexOf(array, valueToFind, Integer.MAX_VALUE);
- }
- /**
- * <p>Finds the last index of the given value in the array starting at the given index.</p>
- *
- * <p>This method returns {@link #INDEX_NOT_FOUND} (<code>-1</code>) for a <code>null</code> input array.</p>
- *
- * <p>A negative startIndex will return {@link #INDEX_NOT_FOUND} (<code>-1</code>). A startIndex larger than the
- * array length will search from the end of the array.</p>
- *
- * @param array the array to traverse for looking for the object, may be <code>null</code>
- * @param valueToFind the value to find
- * @param startIndex the start index to travers backwards from
- * @return the last index of the value within the array,
- * {@link #INDEX_NOT_FOUND} (<code>-1</code>) if not found or <code>null</code> array input
- */
- public static int lastIndexOf(int[] array, int valueToFind, int startIndex) {
- if (array == null) {
- return INDEX_NOT_FOUND;
- }
- if (startIndex < 0) {
- return INDEX_NOT_FOUND;
- } else if (startIndex >= array.length) {
- startIndex = array.length - 1;
- }
- for (int i = startIndex; i >= 0; i--) {
- if (valueToFind == array[i]) {
- return i;
- }
- }
- return INDEX_NOT_FOUND;
- }
- /**
- * <p>Checks if the value is in the given array.</p>
- *
- * <p>The method returns <code>false</code> if a <code>null</code> array is passed in.</p>
- *
- * @param array the array to search through
- * @param valueToFind the value to find
- * @return <code>true</code> if the array contains the object
- */
- public static boolean contains(int[] array, int valueToFind) {
- return indexOf(array, valueToFind) != INDEX_NOT_FOUND;
- }
- // short IndexOf
- //-----------------------------------------------------------------------
- /**
- * <p>Finds the index of the given value in the array.</p>
- *
- * <p>This method returns {@link #INDEX_NOT_FOUND} (<code>-1</code>) for a <code>null</code> input array.</p>
- *
- * @param array the array to search through for the object, may be <code>null</code>
- * @param valueToFind the value to find
- * @return the index of the value within the array,
- * {@link #INDEX_NOT_FOUND} (<code>-1</code>) if not found or <code>null</code> array input
- */
- public static int indexOf(short[] array, short valueToFind) {
- return indexOf(array, valueToFind, 0);
- }
- /**
- * <p>Finds the index of the given value in the array starting at the given index.</p>
- *
- * <p>This method returns {@link #INDEX_NOT_FOUND} (<code>-1</code>) for a <code>null</code> input array.</p>
- *
- * <p>A negative startIndex is treated as zero. A startIndex larger than the array
- * length will return {@link #INDEX_NOT_FOUND} (<code>-1</code>).</p>
- *
- * @param array the array to search through for the object, may be <code>null</code>
- * @param valueToFind the value to find
- * @param startIndex the index to start searching at
- * @return the index of the value within the array,
- * {@link #INDEX_NOT_FOUND} (<code>-1</code>) if not found or <code>null</code> array input
- */
- public static int indexOf(short[] array, short valueToFind, int startIndex) {
- if (array == null) {
- return INDEX_NOT_FOUND;
- }
- if (startIndex < 0) {
- startIndex = 0;
- }
- for (int i = startIndex; i < array.length; i++) {
- if (valueToFind == array[i]) {
- return i;
- }
- }
- return INDEX_NOT_FOUND;
- }
- /**
- * <p>Finds the last index of the given value within the array.</p>
- *
- * <p>This method returns {@link #INDEX_NOT_FOUND} (<code>-1</code>) for a <code>null</code> input array.</p>
- *
- * @param array the array to travers backwords looking for the object, may be <code>null</code>
- * @param valueToFind the object to find
- * @return the last index of the value within the array,
- * {@link #INDEX_NOT_FOUND} (<code>-1</code>) if not found or <code>null</code> array input
- */
- public static int lastIndexOf(short[] array, short valueToFind) {
- return lastIndexOf(array, valueToFind, Integer.MAX_VALUE);
- }
- /**
- * <p>Finds the last index of the given value in the array starting at the given index.</p>
- *
- * <p>This method returns {@link #INDEX_NOT_FOUND} (<code>-1</code>) for a <code>null</code> input array.</p>
- *
- * <p>A negative startIndex will return {@link #INDEX_NOT_FOUND} (<code>-1</code>). A startIndex larger than the
- * array length will search from the end of the array.</p>
- *
- * @param array the array to traverse for looking for the object, may be <code>null</code>
- * @param valueToFind the value to find
- * @param startIndex the start index to travers backwards from
- * @return the last index of the value within the array,
- * {@link #INDEX_NOT_FOUND} (<code>-1</code>) if not found or <code>null</code> array input
- */
- public static int lastIndexOf(short[] array, short valueToFind, int startIndex) {
- if (array == null) {
- return INDEX_NOT_FOUND;
- }
- if (startIndex < 0) {
- return INDEX_NOT_FOUND;
- } else if (startIndex >= array.length) {
- startIndex = array.length - 1;
- }
- for (int i = startIndex; i >= 0; i--) {
- if (valueToFind == array[i]) {
- return i;
- }
- }
- return INDEX_NOT_FOUND;
- }
- /**
- * <p>Checks if the value is in the given array.</p>
- *
- * <p>The method returns <code>false</code> if a <code>null</code> array is passed in.</p>
- *
- * @param array the array to search through
- * @param valueToFind the value to find
- * @return <code>true</code> if the array contains the object
- */
- public static boolean contains(short[] array, short valueToFind) {
- return indexOf(array, valueToFind) != INDEX_NOT_FOUND;
- }
- // char IndexOf
- //-----------------------------------------------------------------------
- /**
- * <p>Finds the index of the given value in the array.</p>
- *
- * <p>This method returns {@link #INDEX_NOT_FOUND} (<code>-1</code>) for a <code>null</code> input array.</p>
- *
- * @param array the array to search through for the object, may be <code>null</code>
- * @param valueToFind the value to find
- * @return the index of the value within the array,
- * {@link #INDEX_NOT_FOUND} (<code>-1</code>) if not found or <code>null</code> array input
- * @since 2.1
- */
- public static int indexOf(char[] array, char valueToFind) {
- return indexOf(array, valueToFind, 0);
- }
- /**
- * <p>Finds the index of the given value in the array starting at the given index.</p>
- *
- * <p>This method returns {@link #INDEX_NOT_FOUND} (<code>-1</code>) for a <code>null</code> input array.</p>
- *
- * <p>A negative startIndex is treated as zero. A startIndex larger than the array
- * length will return {@link #INDEX_NOT_FOUND} (<code>-1</code>).</p>
- *
- * @param array the array to search through for the object, may be <code>null</code>
- * @param valueToFind the value to find
- * @param startIndex the index to start searching at
- * @return the index of the value within the array,
- * {@link #INDEX_NOT_FOUND} (<code>-1</code>) if not found or <code>null</code> array input
- * @since 2.1
- */
- public static int indexOf(char[] array, char valueToFind, int startIndex) {
- if (array == null) {
- return INDEX_NOT_FOUND;
- }
- if (startIndex < 0) {
- startIndex = 0;
- }
- for (int i = startIndex; i < array.length; i++) {
- if (valueToFind == array[i]) {
- return i;
- }
- }
- return INDEX_NOT_FOUND;
- }
- /**
- * <p>Finds the last index of the given value within the array.</p>
- *
- * <p>This method returns {@link #INDEX_NOT_FOUND} (<code>-1</code>) for a <code>null</code> input array.</p>
- *
- * @param array the array to travers backwords looking for the object, may be <code>null</code>
- * @param valueToFind the object to find
- * @return the last index of the value within the array,
- * {@link #INDEX_NOT_FOUND} (<code>-1</code>) if not found or <code>null</code> array input
- * @since 2.1
- */
- public static int lastIndexOf(char[] array, char valueToFind) {
- return lastIndexOf(array, valueToFind, Integer.MAX_VALUE);
- }
- /**
- * <p>Finds the last index of the given value in the array starting at the given index.</p>
- *
- * <p>This method returns {@link #INDEX_NOT_FOUND} (<code>-1</code>) for a <code>null</code> input array.</p>
- *
- * <p>A negative startIndex will return {@link #INDEX_NOT_FOUND} (<code>-1</code>). A startIndex larger than the
- * array length will search from the end of the array.</p>
- *
- * @param array the array to traverse for looking for the object, may be <code>null</code>
- * @param valueToFind the value to find
- * @param startIndex the start index to travers backwards from
- * @return the last index of the value within the array,
- * {@link #INDEX_NOT_FOUND} (<code>-1</code>) if not found or <code>null</code> array input
- * @since 2.1
- */
- public static int lastIndexOf(char[] array, char valueToFind, int startIndex) {
- if (array == null) {
- return INDEX_NOT_FOUND;
- }
- if (startIndex < 0) {
- return INDEX_NOT_FOUND;
- } else if (startIndex >= array.length) {
- startIndex = array.length - 1;
- }
- for (int i = startIndex; i >= 0; i--) {
- if (valueToFind == array[i]) {
- return i;
- }
- }
- return INDEX_NOT_FOUND;
- }
- /**
- * <p>Checks if the value is in the given array.</p>
- *
- * <p>The method returns <code>false</code> if a <code>null</code> array is passed in.</p>
- *
- * @param array the array to search through
- * @param valueToFind the value to find
- * @return <code>true</code> if the array contains the object
- * @since 2.1
- */
- public static boolean contains(char[] array, char valueToFind) {
- return indexOf(array, valueToFind) != INDEX_NOT_FOUND;
- }
- // byte IndexOf
- //-----------------------------------------------------------------------
- /**
- * <p>Finds the index of the given value in the array.</p>
- *
- * <p>This method returns {@link #INDEX_NOT_FOUND} (<code>-1</code>) for a <code>null</code> input array.</p>
- *
- * @param array the array to search through for the object, may be <code>null</code>
- * @param valueToFind the value to find
- * @return the index of the value within the array,
- * {@link #INDEX_NOT_FOUND} (<code>-1</code>) if not found or <code>null</code> array input
- */
- public static int indexOf(byte[] array, byte valueToFind) {
- return indexOf(array, valueToFind, 0);
- }
- /**
- * <p>Finds the index of the given value in the array starting at the given index.</p>
- *
- * <p>This method returns {@link #INDEX_NOT_FOUND} (<code>-1</code>) for a <code>null</code> input array.</p>
- *
- * <p>A negative startIndex is treated as zero. A startIndex larger than the array
- * length will return {@link #INDEX_NOT_FOUND} (<code>-1</code>).</p>
- *
- * @param array the array to search through for the object, may be <code>null</code>
- * @param valueToFind the value to find
- * @param startIndex the index to start searching at
- * @return the index of the value within the array,
- * {@link #INDEX_NOT_FOUND} (<code>-1</code>) if not found or <code>null</code> array input
- */
- public static int indexOf(byte[] array, byte valueToFind, int startIndex) {
- if (array == null) {
- return INDEX_NOT_FOUND;
- }
- if (startIndex < 0) {
- startIndex = 0;
- }
- for (int i = startIndex; i < array.length; i++) {
- if (valueToFind == array[i]) {
- return i;
- }
- }
- return INDEX_NOT_FOUND;
- }
- /**
- * <p>Finds the last index of the given value within the array.</p>
- *
- * <p>This method returns {@link #INDEX_NOT_FOUND} (<code>-1</code>) for a <code>null</code> input array.</p>
- *
- * @param array the array to travers backwords looking for the object, may be <code>null</code>
- * @param valueToFind the object to find
- * @return the last index of the value within the array,
- * {@link #INDEX_NOT_FOUND} (<code>-1</code>) if not found or <code>null</code> array input
- */
- public static int lastIndexOf(byte[] array, byte valueToFind) {
- return lastIndexOf(array, valueToFind, Integer.MAX_VALUE);
- }
- /**
- * <p>Finds the last index of the given value in the array starting at the given index.</p>
- *
- * <p>This method returns {@link #INDEX_NOT_FOUND} (<code>-1</code>) for a <code>null</code> input array.</p>
- *
- * <p>A negative startIndex will return {@link #INDEX_NOT_FOUND} (<code>-1</code>). A startIndex larger than the
- * array length will search from the end of the array.</p>
- *
- * @param array the array to traverse for looking for the object, may be <code>null</code>
- * @param valueToFind the value to find
- * @param startIndex the start index to travers backwards from
- * @return the last index of the value within the array,
- * {@link #INDEX_NOT_FOUND} (<code>-1</code>) if not found or <code>null</code> array input
- */
- public static int lastIndexOf(byte[] array, byte valueToFind, int startIndex) {
- if (array == null) {
- return INDEX_NOT_FOUND;
- }
- if (startIndex < 0) {
- return INDEX_NOT_FOUND;
- } else if (startIndex >= array.length) {
- startIndex = array.length - 1;
- }
- for (int i = startIndex; i >= 0; i--) {
- if (valueToFind == array[i]) {
- return i;
- }
- }
- return INDEX_NOT_FOUND;
- }
- /**
- * <p>Checks if the value is in the given array.</p>
- *
- * <p>The method returns <code>false</code> if a <code>null</code> array is passed in.</p>
- *
- * @param array the array to search through
- * @param valueToFind the value to find
- * @return <code>true</code> if the array contains the object
- */
- public static boolean contains(byte[] array, byte valueToFind) {
- return indexOf(array, valueToFind) != INDEX_NOT_FOUND;
- }
- // double IndexOf
- //-----------------------------------------------------------------------
- /**
- * <p>Finds the index of the given value in the array.</p>
- *
- * <p>This method returns {@link #INDEX_NOT_FOUND} (<code>-1</code>) for a <code>null</code> input array.</p>
- *
- * @param array the array to search through for the object, may be <code>null</code>
- * @param valueToFind the value to find
- * @return the index of the value within the array,
- * {@link #INDEX_NOT_FOUND} (<code>-1</code>) if not found or <code>null</code> array input
- */
- public static int indexOf(double[] array, double valueToFind) {
- return indexOf(array, valueToFind, 0);
- }
- /**
- * <p>Finds the index of the given value within a given tolerance in the array.
- * This method will return the index of the first value which falls between the region
- * defined by valueToFind - tolerance and valueToFind + tolerance.</p>
- *
- * <p>This method returns {@link #INDEX_NOT_FOUND} (<code>-1</code>) for a <code>null</code> input array.</p>
- *
- * @param array the array to search through for the object, may be <code>null</code>
- * @param valueToFind the value to find
- * @param tolerance tolerance of the search
- * @return the index of the value within the array,
- * {@link #INDEX_NOT_FOUND} (<code>-1</code>) if not found or <code>null</code> array input
- */
- public static int indexOf(double[] array, double valueToFind, double tolerance) {
- return indexOf(array, valueToFind, 0, tolerance);
- }
- /**
- * <p>Finds the index of the given value in the array starting at the given index.</p>
- *
- * <p>This method returns {@link #INDEX_NOT_FOUND} (<code>-1</code>) for a <code>null</code> input array.</p>
- *
- * <p>A negative startIndex is treated as zero. A startIndex larger than the array
- * length will return {@link #INDEX_NOT_FOUND} (<code>-1</code>).</p>
- *
- * @param array the array to search through for the object, may be <code>null</code>
- * @param valueToFind the value to find
- * @param startIndex the index to start searching at
- * @return the index of the value within the array,
- * {@link #INDEX_NOT_FOUND} (<code>-1</code>) if not found or <code>null</code> array input
- */
- public static int indexOf(double[] array, double valueToFind, int startIndex) {
- if (ArrayUtils.isEmpty(array)) {
- return INDEX_NOT_FOUND;
- }
- if (startIndex < 0) {
- startIndex = 0;
- }
- for (int i = startIndex; i < array.length; i++) {
- if (valueToFind == array[i]) {
- return i;
- }
- }
- return INDEX_NOT_FOUND;
- }
- /**
- * <p>Finds the index of the given value in the array starting at the given index.
- * This method will return the index of the first value which falls between the region
- * defined by valueToFind - tolerance and valueToFind + tolerance.</p>
- *
- * <p>This method returns {@link #INDEX_NOT_FOUND} (<code>-1</code>) for a <code>null</code> input array.</p>
- *
- * <p>A negative startIndex is treated as zero. A startIndex larger than the array
- * length will return {@link #INDEX_NOT_FOUND} (<code>-1</code>).</p>
- *
- * @param array the array to search through for the object, may be <code>null</code>
- * @param valueToFind the value to find
- * @param startIndex the index to start searching at
- * @param tolerance tolerance of the search
- * @return the index of the value within the array,
- * {@link #INDEX_NOT_FOUND} (<code>-1</code>) if not found or <code>null</code> array input
- */
- public static int indexOf(double[] array, double valueToFind, int startIndex, double tolerance) {
- if (ArrayUtils.isEmpty(array)) {
- return INDEX_NOT_FOUND;
- }
- if (startIndex < 0) {
- startIndex = 0;
- }
- double min = valueToFind - tolerance;
- double max = valueToFind + tolerance;
- for (int i = startIndex; i < array.length; i++) {
- if (array[i] >= min && array[i] <= max) {
- return i;
- }
- }
- return INDEX_NOT_FOUND;
- }
- /**
- * <p>Finds the last index of the given value within the array.</p>
- *
- * <p>This method returns {@link #INDEX_NOT_FOUND} (<code>-1</code>) for a <code>null</code> input array.</p>
- *
- * @param array the array to travers backwords looking for the object, may be <code>null</code>
- * @param valueToFind the object to find
- * @return the last index of the value within the array,
- * {@link #INDEX_NOT_FOUND} (<code>-1</code>) if not found or <code>null</code> array input
- */
- public static int lastIndexOf(double[] array, double valueToFind) {
- return lastIndexOf(array, valueToFind, Integer.MAX_VALUE);
- }
- /**
- * <p>Finds the last index of the given value within a given tolerance in the array.
- * This method will return the index of the last value which falls between the region
- * defined by valueToFind - tolerance and valueToFind + tolerance.</p>
- *
- * <p>This method returns {@link #INDEX_NOT_FOUND} (<code>-1</code>) for a <code>null</code> input array.</p>
- *
- * @param array the array to search through for the object, may be <code>null</code>
- * @param valueToFind the value to find
- * @param tolerance tolerance of the search
- * @return the index of the value within the array,
- * {@link #INDEX_NOT_FOUND} (<code>-1</code>) if not found or <code>null</code> array input
- */
- public static int lastIndexOf(double[] array, double valueToFind, double tolerance) {
- return lastIndexOf(array, valueToFind, Integer.MAX_VALUE, tolerance);
- }
- /**
- * <p>Finds the last index of the given value in the array starting at the given index.</p>
- *
- * <p>This method returns {@link #INDEX_NOT_FOUND} (<code>-1</code>) for a <code>null</code> input array.</p>
- *
- * <p>A negative startIndex will return {@link #INDEX_NOT_FOUND} (<code>-1</code>). A startIndex larger than the
- * array length will search from the end of the array.</p>
- *
- * @param array the array to traverse for looking for the object, may be <code>null</code>
- * @param valueToFind the value to find
- * @param startIndex the start index to travers backwards from
- * @return the last index of the value within the array,
- * {@link #INDEX_NOT_FOUND} (<code>-1</code>) if not found or <code>null</code> array input
- */
- public static int lastIndexOf(double[] array, double valueToFind, int startIndex) {
- if (ArrayUtils.isEmpty(array)) {
- return INDEX_NOT_FOUND;
- }
- if (startIndex < 0) {
- return INDEX_NOT_FOUND;
- } else if (startIndex >= array.length) {
- startIndex = array.length - 1;
- }
- for (int i = startIndex; i >= 0; i--) {
- if (valueToFind == array[i]) {
- return i;
- }
- }
- return INDEX_NOT_FOUND;
- }
- /**
- * <p>Finds the last index of the given value in the array starting at the given index.
- * This method will return the index of the last value which falls between the region
- * defined by valueToFind - tolerance and valueToFind + tolerance.</p>
- *
- * <p>This method returns {@link #INDEX_NOT_FOUND} (<code>-1</code>) for a <code>null</code> input array.</p>
- *
- * <p>A negative startIndex will return {@link #INDEX_NOT_FOUND} (<code>-1</code>). A startIndex larger than the
- * array length will search from the end of the array.</p>
- *
- * @param array the array to traverse for looking for the object, may be <code>null</code>
- * @param valueToFind the value to find
- * @param startIndex the start index to travers backwards from
- * @param tolerance search for value within plus/minus this amount
- * @return the last index of the value within the array,
- * {@link #INDEX_NOT_FOUND} (<code>-1</code>) if not found or <code>null</code> array input
- */
- public static int lastIndexOf(double[] array, double valueToFind, int startIndex, double tolerance) {
- if (ArrayUtils.isEmpty(array)) {
- return INDEX_NOT_FOUND;
- }
- if (startIndex < 0) {
- return INDEX_NOT_FOUND;
- } else if (startIndex >= array.length) {
- startIndex = array.length - 1;
- }
- double min = valueToFind - tolerance;
- double max = valueToFind + tolerance;
- for (int i = startIndex; i >= 0; i--) {
- if (array[i] >= min && array[i] <= max) {
- return i;
- }
- }
- return INDEX_NOT_FOUND;
- }
- /**
- * <p>Checks if the value is in the given array.</p>
- *
- * <p>The method returns <code>false</code> if a <code>null</code> array is passed in.</p>
- *
- * @param array the array to search through
- * @param valueToFind the value to find
- * @return <code>true</code> if the array contains the object
- */
- public static boolean contains(double[] array, double valueToFind) {
- return indexOf(array, valueToFind) != INDEX_NOT_FOUND;
- }
- /**
- * <p>Checks if a value falling within the given tolerance is in the
- * given array. If the array contains a value within the inclusive range
- * defined by (value - tolerance) to (value + tolerance).</p>
- *
- * <p>The method returns <code>false</code> if a <code>null</code> array
- * is passed in.</p>
- *
- * @param array the array to search
- * @param valueToFind the value to find
- * @param tolerance the array contains the tolerance of the search
- * @return true if value falling within tolerance is in array
- */
- public static boolean contains(double[] array, double valueToFind, double tolerance) {
- return indexOf(array, valueToFind, 0, tolerance) != INDEX_NOT_FOUND;
- }
- // float IndexOf
- //-----------------------------------------------------------------------
- /**
- * <p>Finds the index of the given value in the array.</p>
- *
- * <p>This method returns {@link #INDEX_NOT_FOUND} (<code>-1</code>) for a <code>null</code> input array.</p>
- *
- * @param array the array to search through for the object, may be <code>null</code>
- * @param valueToFind the value to find
- * @return the index of the value within the array,
- * {@link #INDEX_NOT_FOUND} (<code>-1</code>) if not found or <code>null</code> array input
- */
- public static int indexOf(float[] array, float valueToFind) {
- return indexOf(array, valueToFind, 0);
- }
- /**
- * <p>Finds the index of the given value in the array starting at the given index.</p>
- *
- * <p>This method returns {@link #INDEX_NOT_FOUND} (<code>-1</code>) for a <code>null</code> input array.</p>
- *
- * <p>A negative startIndex is treated as zero. A startIndex larger than the array
- * length will return {@link #INDEX_NOT_FOUND} (<code>-1</code>).</p>
- *
- * @param array the array to search through for the object, may be <code>null</code>
- * @param valueToFind the value to find
- * @param startIndex the index to start searching at
- * @return the index of the value within the array,
- * {@link #INDEX_NOT_FOUND} (<code>-1</code>) if not found or <code>null</code> array input
- */
- public static int indexOf(float[] array, float valueToFind, int startIndex) {
- if (ArrayUtils.isEmpty(array)) {
- return INDEX_NOT_FOUND;
- }
- if (startIndex < 0) {
- startIndex = 0;
- }
- for (int i = startIndex; i < array.length; i++) {
- if (valueToFind == array[i]) {
- return i;
- }
- }
- return INDEX_NOT_FOUND;
- }
- /**
- * <p>Finds the last index of the given value within the array.</p>
- *
- * <p>This method returns {@link #INDEX_NOT_FOUND} (<code>-1</code>) for a <code>null</code> input array.</p>
- *
- * @param array the array to travers backwords looking for the object, may be <code>null</code>
- * @param valueToFind the object to find
- * @return the last index of the value within the array,
- * {@link #INDEX_NOT_FOUND} (<code>-1</code>) if not found or <code>null</code> array input
- */
- public static int lastIndexOf(float[] array, float valueToFind) {
- return lastIndexOf(array, valueToFind, Integer.MAX_VALUE);
- }
- /**
- * <p>Finds the last index of the given value in the array starting at the given index.</p>
- *
- * <p>This method returns {@link #INDEX_NOT_FOUND} (<code>-1</code>) for a <code>null</code> input array.</p>
- *
- * <p>A negative startIndex will return {@link #INDEX_NOT_FOUND} (<code>-1</code>). A startIndex larger than the
- * array length will search from the end of the array.</p>
- *
- * @param array the array to traverse for looking for the object, may be <code>null</code>
- * @param valueToFind the value to find
- * @param startIndex the start index to travers backwards from
- * @return the last index of the value within the array,
- * {@link #INDEX_NOT_FOUND} (<code>-1</code>) if not found or <code>null</code> array input
- */
- public static int lastIndexOf(float[] array, float valueToFind, int startIndex) {
- if (ArrayUtils.isEmpty(array)) {
- return INDEX_NOT_FOUND;
- }
- if (startIndex < 0) {
- return INDEX_NOT_FOUND;
- } else if (startIndex >= array.length) {
- startIndex = array.length - 1;
- }
- for (int i = startIndex; i >= 0; i--) {
- if (valueToFind == array[i]) {
- return i;
- }
- }
- return INDEX_NOT_FOUND;
- }
- /**
- * <p>Checks if the value is in the given array.</p>
- *
- * <p>The method returns <code>false</code> if a <code>null</code> array is passed in.</p>
- *
- * @param array the array to search through
- * @param valueToFind the value to find
- * @return <code>true</code> if the array contains the object
- */
- public static boolean contains(float[] array, float valueToFind) {
- return indexOf(array, valueToFind) != INDEX_NOT_FOUND;
- }
- // boolean IndexOf
- //-----------------------------------------------------------------------
- /**
- * <p>Finds the index of the given value in the array.</p>
- *
- * <p>This method returns {@link #INDEX_NOT_FOUND} (<code>-1</code>) for a <code>null</code> input array.</p>
- *
- * @param array the array to search through for the object, may be <code>null</code>
- * @param valueToFind the value to find
- * @return the index of the value within the array,
- * {@link #INDEX_NOT_FOUND} (<code>-1</code>) if not found or <code>null</code> array input
- */
- public static int indexOf(boolean[] array, boolean valueToFind) {
- return indexOf(array, valueToFind, 0);
- }
- /**
- * <p>Finds the index of the given value in the array starting at the given index.</p>
- *
- * <p>This method returns {@link #INDEX_NOT_FOUND} (<code>-1</code>) for a <code>null</code> input array.</p>
- *
- * <p>A negative startIndex is treated as zero. A startIndex larger than the array
- * length will return {@link #INDEX_NOT_FOUND} (<code>-1</code>).</p>
- *
- * @param array the array to search through for the object, may be <code>null</code>
- * @param valueToFind the value to find
- * @param startIndex the index to start searching at
- * @return the index of the value within the array,
- * {@link #INDEX_NOT_FOUND} (<code>-1</code>) if not found or <code>null</code>
- * array input
- */
- public static int indexOf(boolean[] array, boolean valueToFind, int startIndex) {
- if (ArrayUtils.isEmpty(array)) {
- return INDEX_NOT_FOUND;
- }
- if (startIndex < 0) {
- startIndex = 0;
- }
- for (int i = startIndex; i < array.length; i++) {
- if (valueToFind == array[i]) {
- return i;
- }
- }
- return INDEX_NOT_FOUND;
- }
- /**
- * <p>Finds the last index of the given value within the array.</p>
- *
- * <p>This method returns {@link #INDEX_NOT_FOUND} (<code>-1</code>) if
- * <code>null</code> array input.</p>
- *
- * @param array the array to travers backwords looking for the object, may be <code>null</code>
- * @param valueToFind the object to find
- * @return the last index of the value within the array,
- * {@link #INDEX_NOT_FOUND} (<code>-1</code>) if not found or <code>null</code> array input
- */
- public static int lastIndexOf(boolean[] array, boolean valueToFind) {
- return lastIndexOf(array, valueToFind, Integer.MAX_VALUE);
- }
- /**
- * <p>Finds the last index of the given value in the array starting at the given index.</p>
- *
- * <p>This method returns {@link #INDEX_NOT_FOUND} (<code>-1</code>) for a <code>null</code> input array.</p>
- *
- * <p>A negative startIndex will return {@link #INDEX_NOT_FOUND} (<code>-1</code>). A startIndex larger than
- * the array length will search from the end of the array.</p>
- *
- * @param array the array to traverse for looking for the object, may be <code>null</code>
- * @param valueToFind the value to find
- * @param startIndex the start index to travers backwards from
- * @return the last index of the value within the array,
- * {@link #INDEX_NOT_FOUND} (<code>-1</code>) if not found or <code>null</code> array input
- */
- public static int lastIndexOf(boolean[] array, boolean valueToFind, int startIndex) {
- if (ArrayUtils.isEmpty(array)) {
- return INDEX_NOT_FOUND;
- }
- if (startIndex < 0) {
- return INDEX_NOT_FOUND;
- } else if (startIndex >= array.length) {
- startIndex = array.length - 1;
- }
- for (int i = startIndex; i >= 0; i--) {
- if (valueToFind == array[i]) {
- return i;
- }
- }
- return INDEX_NOT_FOUND;
- }
- /**
- * <p>Checks if the value is in the given array.</p>
- *
- * <p>The method returns <code>false</code> if a <code>null</code> array is passed in.</p>
- *
- * @param array the array to search through
- * @param valueToFind the value to find
- * @return <code>true</code> if the array contains the object
- */
- public static boolean contains(boolean[] array, boolean valueToFind) {
- return indexOf(array, valueToFind) != INDEX_NOT_FOUND;
- }
- // Primitive/Object array converters
- // ----------------------------------------------------------------------
- // Character array converters
- // ----------------------------------------------------------------------
- /**
- * <p>Converts an array of object Characters to primitives.</p>
- *
- * <p>This method returns <code>null</code> for a <code>null</code> input array.</p>
- *
- * @param array a <code>Character</code> array, may be <code>null</code>
- * @return a <code>char</code> array, <code>null</code> if null array input
- * @throws NullPointerException if array content is <code>null</code>
- */
- public static char[] toPrimitive(Character[] array) {
- if (array == null) {
- return null;
- } else if (array.length == 0) {
- return EMPTY_CHAR_ARRAY;
- }
- final char[] result = new char[array.length];
- for (int i = 0; i < array.length; i++) {
- result[i] = array[i].charValue();
- }
- return result;
- }
- /**
- * <p>Converts an array of object Character to primitives handling <code>null</code>.</p>
- *
- * <p>This method returns <code>null</code> for a <code>null</code> input array.</p>
- *
- * @param array a <code>Character</code> array, may be <code>null</code>
- * @param valueForNull the value to insert if <code>null</code> found
- * @return a <code>char</code> array, <code>null</code> if null array input
- */
- public static char[] toPrimitive(Character[] array, char valueForNull) {
- if (array == null) {
- return null;
- } else if (array.length == 0) {
- return EMPTY_CHAR_ARRAY;
- }
- final char[] result = new char[array.length];
- for (int i = 0; i < array.length; i++) {
- Character b = array[i];
- result[i] = (b == null ? valueForNull : b.charValue());
- }
- return result;
- }
-
- /**
- * <p>Converts an array of primitive chars to objects.</p>
- *
- * <p>This method returns <code>null</code> for a <code>null</code> input array.</p>
- *
- * @param array a <code>char</code> array
- * @return a <code>Character</code> array, <code>null</code> if null array input
- */
- public static Character[] toObject(char[] array) {
- if (array == null) {
- return null;
- } else if (array.length == 0) {
- return EMPTY_CHARACTER_OBJECT_ARRAY;
- }
- final Character[] result = new Character[array.length];
- for (int i = 0; i < array.length; i++) {
- result[i] = new Character(array[i]);
- }
- return result;
- }
-
- // Long array converters
- // ----------------------------------------------------------------------
- /**
- * <p>Converts an array of object Longs to primitives.</p>
- *
- * <p>This method returns <code>null</code> for a <code>null</code> input array.</p>
- *
- * @param array a <code>Long</code> array, may be <code>null</code>
- * @return a <code>long</code> array, <code>null</code> if null array input
- * @throws NullPointerException if array content is <code>null</code>
- */
- public static long[] toPrimitive(Long[] array) {
- if (array == null) {
- return null;
- } else if (array.length == 0) {
- return EMPTY_LONG_ARRAY;
- }
- final long[] result = new long[array.length];
- for (int i = 0; i < array.length; i++) {
- result[i] = array[i].longValue();
- }
- return result;
- }
-
- /**
- * <p>Converts an array of object Long to primitives handling <code>null</code>.</p>
- *
- * <p>This method returns <code>null</code> for a <code>null</code> input array.</p>
- *
- * @param array a <code>Long</code> array, may be <code>null</code>
- * @param valueForNull the value to insert if <code>null</code> found
- * @return a <code>long</code> array, <code>null</code> if null array input
- */
- public static long[] toPrimitive(Long[] array, long valueForNull) {
- if (array == null) {
- return null;
- } else if (array.length == 0) {
- return EMPTY_LONG_ARRAY;
- }
- final long[] result = new long[array.length];
- for (int i = 0; i < array.length; i++) {
- Long b = array[i];
- result[i] = (b == null ? valueForNull : b.longValue());
- }
- return result;
- }
-
- /**
- * <p>Converts an array of primitive longs to objects.</p>
- *
- * <p>This method returns <code>null</code> for a <code>null</code> input array.</p>
- *
- * @param array a <code>long</code> array
- * @return a <code>Long</code> array, <code>null</code> if null array input
- */
- public static Long[] toObject(long[] array) {
- if (array == null) {
- return null;
- } else if (array.length == 0) {
- return EMPTY_LONG_OBJECT_ARRAY;
- }
- final Long[] result = new Long[array.length];
- for (int i = 0; i < array.length; i++) {
- result[i] = new Long(array[i]);
- }
- return result;
- }
- // Int array converters
- // ----------------------------------------------------------------------
- /**
- * <p>Converts an array of object Integers to primitives.</p>
- *
- * <p>This method returns <code>null</code> for a <code>null</code> input array.</p>
- *
- * @param array a <code>Integer</code> array, may be <code>null</code>
- * @return an <code>int</code> array, <code>null</code> if null array input
- * @throws NullPointerException if array content is <code>null</code>
- */
- public static int[] toPrimitive(Integer[] array) {
- if (array == null) {
- return null;
- } else if (array.length == 0) {
- return EMPTY_INT_ARRAY;
- }
- final int[] result = new int[array.length];
- for (int i = 0; i < array.length; i++) {
- result[i] = array[i].intValue();
- }
- return result;
- }
- /**
- * <p>Converts an array of object Integer to primitives handling <code>null</code>.</p>
- *
- * <p>This method returns <code>null</code> for a <code>null</code> input array.</p>
- *
- * @param array a <code>Integer</code> array, may be <code>null</code>
- * @param valueForNull the value to insert if <code>null</code> found
- * @return an <code>int</code> array, <code>null</code> if null array input
- */
- public static int[] toPrimitive(Integer[] array, int valueForNull) {
- if (array == null) {
- return null;
- } else if (array.length == 0) {
- return EMPTY_INT_ARRAY;
- }
- final int[] result = new int[array.length];
- for (int i = 0; i < array.length; i++) {
- Integer b = array[i];
- result[i] = (b == null ? valueForNull : b.intValue());
- }
- return result;
- }
- /**
- * <p>Converts an array of primitive ints to objects.</p>
- *
- * <p>This method returns <code>null</code> for a <code>null</code> input array.</p>
- *
- * @param array an <code>int</code> array
- * @return an <code>Integer</code> array, <code>null</code> if null array input
- */
- public static Integer[] toObject(int[] array) {
- if (array == null) {
- return null;
- } else if (array.length == 0) {
- return EMPTY_INTEGER_OBJECT_ARRAY;
- }
- final Integer[] result = new Integer[array.length];
- for (int i = 0; i < array.length; i++) {
- result[i] = new Integer(array[i]);
- }
- return result;
- }
-
- // Short array converters
- // ----------------------------------------------------------------------
- /**
- * <p>Converts an array of object Shorts to primitives.</p>
- *
- * <p>This method returns <code>null</code> for a <code>null</code> input array.</p>
- *
- * @param array a <code>Short</code> array, may be <code>null</code>
- * @return a <code>byte</code> array, <code>null</code> if null array input
- * @throws NullPointerException if array content is <code>null</code>
- */
- public static short[] toPrimitive(Short[] array) {
- if (array == null) {
- return null;
- } else if (array.length == 0) {
- return EMPTY_SHORT_ARRAY;
- }
- final short[] result = new short[array.length];
- for (int i = 0; i < array.length; i++) {
- result[i] = array[i].shortValue();
- }
- return result;
- }
- /**
- * <p>Converts an array of object Short to primitives handling <code>null</code>.</p>
- *
- * <p>This method returns <code>null</code> for a <code>null</code> input array.</p>
- *
- * @param array a <code>Short</code> array, may be <code>null</code>
- * @param valueForNull the value to insert if <code>null</code> found
- * @return a <code>byte</code> array, <code>null</code> if null array input
- */
- public static short[] toPrimitive(Short[] array, short valueForNull) {
- if (array == null) {
- return null;
- } else if (array.length == 0) {
- return EMPTY_SHORT_ARRAY;
- }
- final short[] result = new short[array.length];
- for (int i = 0; i < array.length; i++) {
- Short b = array[i];
- result[i] = (b == null ? valueForNull : b.shortValue());
- }
- return result;
- }
- /**
- * <p>Converts an array of primitive shorts to objects.</p>
- *
- * <p>This method returns <code>null</code> for a <code>null</code> input array.</p>
- *
- * @param array a <code>short</code> array
- * @return a <code>Short</code> array, <code>null</code> if null array input
- */
- public static Short[] toObject(short[] array) {
- if (array == null) {
- return null;
- } else if (array.length == 0) {
- return EMPTY_SHORT_OBJECT_ARRAY;
- }
- final Short[] result = new Short[array.length];
- for (int i = 0; i < array.length; i++) {
- result[i] = new Short(array[i]);
- }
- return result;
- }
- // Byte array converters
- // ----------------------------------------------------------------------
- /**
- * <p>Converts an array of object Bytes to primitives.</p>
- *
- * <p>This method returns <code>null</code> for a <code>null</code> input array.</p>
- *
- * @param array a <code>Byte</code> array, may be <code>null</code>
- * @return a <code>byte</code> array, <code>null</code> if null array input
- * @throws NullPointerException if array content is <code>null</code>
- */
- public static byte[] toPrimitive(Byte[] array) {
- if (array == null) {
- return null;
- } else if (array.length == 0) {
- return EMPTY_BYTE_ARRAY;
- }
- final byte[] result = new byte[array.length];
- for (int i = 0; i < array.length; i++) {
- result[i] = array[i].byteValue();
- }
- return result;
- }
- /**
- * <p>Converts an array of object Bytes to primitives handling <code>null</code>.</p>
- *
- * <p>This method returns <code>null</code> for a <code>null</code> input array.</p>
- *
- * @param array a <code>Byte</code> array, may be <code>null</code>
- * @param valueForNull the value to insert if <code>null</code> found
- * @return a <code>byte</code> array, <code>null</code> if null array input
- */
- public static byte[] toPrimitive(Byte[] array, byte valueForNull) {
- if (array == null) {
- return null;
- } else if (array.length == 0) {
- return EMPTY_BYTE_ARRAY;
- }
- final byte[] result = new byte[array.length];
- for (int i = 0; i < array.length; i++) {
- Byte b = array[i];
- result[i] = (b == null ? valueForNull : b.byteValue());
- }
- return result;
- }
- /**
- * <p>Converts an array of primitive bytes to objects.</p>
- *
- * <p>This method returns <code>null</code> for a <code>null</code> input array.</p>
- *
- * @param array a <code>byte</code> array
- * @return a <code>Byte</code> array, <code>null</code> if null array input
- */
- public static Byte[] toObject(byte[] array) {
- if (array == null) {
- return null;
- } else if (array.length == 0) {
- return EMPTY_BYTE_OBJECT_ARRAY;
- }
- final Byte[] result = new Byte[array.length];
- for (int i = 0; i < array.length; i++) {
- result[i] = new Byte(array[i]);
- }
- return result;
- }
-
- // Double array converters
- // ----------------------------------------------------------------------
- /**
- * <p>Converts an array of object Doubles to primitives.</p>
- *
- * <p>This method returns <code>null</code> for a <code>null</code> input array.</p>
- *
- * @param array a <code>Double</code> array, may be <code>null</code>
- * @return a <code>double</code> array, <code>null</code> if null array input
- * @throws NullPointerException if array content is <code>null</code>
- */
- public static double[] toPrimitive(Double[] array) {
- if (array == null) {
- return null;
- } else if (array.length == 0) {
- return EMPTY_DOUBLE_ARRAY;
- }
- final double[] result = new double[array.length];
- for (int i = 0; i < array.length; i++) {
- result[i] = array[i].doubleValue();
- }
- return result;
- }
- /**
- * <p>Converts an array of object Doubles to primitives handling <code>null</code>.</p>
- *
- * <p>This method returns <code>null</code> for a <code>null</code> input array.</p>
- *
- * @param array a <code>Double</code> array, may be <code>null</code>
- * @param valueForNull the value to insert if <code>null</code> found
- * @return a <code>double</code> array, <code>null</code> if null array input
- */
- public static double[] toPrimitive(Double[] array, double valueForNull) {
- if (array == null) {
- return null;
- } else if (array.length == 0) {
- return EMPTY_DOUBLE_ARRAY;
- }
- final double[] result = new double[array.length];
- for (int i = 0; i < array.length; i++) {
- Double b = array[i];
- result[i] = (b == null ? valueForNull : b.doubleValue());
- }
- return result;
- }
- /**
- * <p>Converts an array of primitive doubles to objects.</p>
- *
- * <p>This method returns <code>null</code> for a <code>null</code> input array.</p>
- *
- * @param array a <code>double</code> array
- * @return a <code>Double</code> array, <code>null</code> if null array input
- */
- public static Double[] toObject(double[] array) {
- if (array == null) {
- return null;
- } else if (array.length == 0) {
- return EMPTY_DOUBLE_OBJECT_ARRAY;
- }
- final Double[] result = new Double[array.length];
- for (int i = 0; i < array.length; i++) {
- result[i] = new Double(array[i]);
- }
- return result;
- }
- // Float array converters
- // ----------------------------------------------------------------------
- /**
- * <p>Converts an array of object Floats to primitives.</p>
- *
- * <p>This method returns <code>null</code> for a <code>null</code> input array.</p>
- *
- * @param array a <code>Float</code> array, may be <code>null</code>
- * @return a <code>float</code> array, <code>null</code> if null array input
- * @throws NullPointerException if array content is <code>null</code>
- */
- public static float[] toPrimitive(Float[] array) {
- if (array == null) {
- return null;
- } else if (array.length == 0) {
- return EMPTY_FLOAT_ARRAY;
- }
- final float[] result = new float[array.length];
- for (int i = 0; i < array.length; i++) {
- result[i] = array[i].floatValue();
- }
- return result;
- }
- /**
- * <p>Converts an array of object Floats to primitives handling <code>null</code>.</p>
- *
- * <p>This method returns <code>null</code> for a <code>null</code> input array.</p>
- *
- * @param array a <code>Float</code> array, may be <code>null</code>
- * @param valueForNull the value to insert if <code>null</code> found
- * @return a <code>float</code> array, <code>null</code> if null array input
- */
- public static float[] toPrimitive(Float[] array, float valueForNull) {
- if (array == null) {
- return null;
- } else if (array.length == 0) {
- return EMPTY_FLOAT_ARRAY;
- }
- final float[] result = new float[array.length];
- for (int i = 0; i < array.length; i++) {
- Float b = array[i];
- result[i] = (b == null ? valueForNull : b.floatValue());
- }
- return result;
- }
- /**
- * <p>Converts an array of primitive floats to objects.</p>
- *
- * <p>This method returns <code>null</code> for a <code>null</code> input array.</p>
- *
- * @param array a <code>float</code> array
- * @return a <code>Float</code> array, <code>null</code> if null array input
- */
- public static Float[] toObject(float[] array) {
- if (array == null) {
- return null;
- } else if (array.length == 0) {
- return EMPTY_FLOAT_OBJECT_ARRAY;
- }
- final Float[] result = new Float[array.length];
- for (int i = 0; i < array.length; i++) {
- result[i] = new Float(array[i]);
- }
- return result;
- }
- // Boolean array converters
- // ----------------------------------------------------------------------
- /**
- * <p>Converts an array of object Booleans to primitives.</p>
- *
- * <p>This method returns <code>null</code> for a <code>null</code> input array.</p>
- *
- * @param array a <code>Boolean</code> array, may be <code>null</code>
- * @return a <code>boolean</code> array, <code>null</code> if null array input
- * @throws NullPointerException if array content is <code>null</code>
- */
- public static boolean[] toPrimitive(Boolean[] array) {
- if (array == null) {
- return null;
- } else if (array.length == 0) {
- return EMPTY_BOOLEAN_ARRAY;
- }
- final boolean[] result = new boolean[array.length];
- for (int i = 0; i < array.length; i++) {
- result[i] = array[i].booleanValue();
- }
- return result;
- }
- /**
- * <p>Converts an array of object Booleans to primitives handling <code>null</code>.</p>
- *
- * <p>This method returns <code>null</code> for a <code>null</code> input array.</p>
- *
- * @param array a <code>Boolean</code> array, may be <code>null</code>
- * @param valueForNull the value to insert if <code>null</code> found
- * @return a <code>boolean</code> array, <code>null</code> if null array input
- */
- public static boolean[] toPrimitive(Boolean[] array, boolean valueForNull) {
- if (array == null) {
- return null;
- } else if (array.length == 0) {
- return EMPTY_BOOLEAN_ARRAY;
- }
- final boolean[] result = new boolean[array.length];
- for (int i = 0; i < array.length; i++) {
- Boolean b = array[i];
- result[i] = (b == null ? valueForNull : b.booleanValue());
- }
- return result;
- }
- /**
- * <p>Converts an array of primitive booleans to objects.</p>
- *
- * <p>This method returns <code>null</code> for a <code>null</code> input array.</p>
- *
- * @param array a <code>boolean</code> array
- * @return a <code>Boolean</code> array, <code>null</code> if null array input
- */
- public static Boolean[] toObject(boolean[] array) {
- if (array == null) {
- return null;
- } else if (array.length == 0) {
- return EMPTY_BOOLEAN_OBJECT_ARRAY;
- }
- final Boolean[] result = new Boolean[array.length];
- for (int i = 0; i < array.length; i++) {
- result[i] = (array[i] ? Boolean.TRUE : Boolean.FALSE);
- }
- return result;
- }
- // ----------------------------------------------------------------------
- /**
- * <p>Checks if an array of Objects is empty or <code>null</code>.</p>
- *
- * @param array the array to test
- * @return <code>true</code> if the array is empty or <code>null</code>
- * @since 2.1
- */
- public static boolean isEmpty(Object[] array) {
- if (array == null || array.length == 0) {
- return true;
- }
- return false;
- }
- /**
- * <p>Checks if an array of primitive longs is empty or <code>null</code>.</p>
- *
- * @param array the array to test
- * @return <code>true</code> if the array is empty or <code>null</code>
- * @since 2.1
- */
- public static boolean isEmpty(long[] array) {
- if (array == null || array.length == 0) {
- return true;
- }
- return false;
- }
- /**
- * <p>Checks if an array of primitive ints is empty or <code>null</code>.</p>
- *
- * @param array the array to test
- * @return <code>true</code> if the array is empty or <code>null</code>
- * @since 2.1
- */
- public static boolean isEmpty(int[] array) {
- if (array == null || array.length == 0) {
- return true;
- }
- return false;
- }
- /**
- * <p>Checks if an array of primitive shorts is empty or <code>null</code>.</p>
- *
- * @param array the array to test
- * @return <code>true</code> if the array is empty or <code>null</code>
- * @since 2.1
- */
- public static boolean isEmpty(short[] array) {
- if (array == null || array.length == 0) {
- return true;
- }
- return false;
- }
- /**
- * <p>Checks if an array of primitive chars is empty or <code>null</code>.</p>
- *
- * @param array the array to test
- * @return <code>true</code> if the array is empty or <code>null</code>
- * @since 2.1
- */
- public static boolean isEmpty(char[] array) {
- if (array == null || array.length == 0) {
- return true;
- }
- return false;
- }
- /**
- * <p>Checks if an array of primitive bytes is empty or <code>null</code>.</p>
- *
- * @param array the array to test
- * @return <code>true</code> if the array is empty or <code>null</code>
- * @since 2.1
- */
- public static boolean isEmpty(byte[] array) {
- if (array == null || array.length == 0) {
- return true;
- }
- return false;
- }
- /**
- * <p>Checks if an array of primitive doubles is empty or <code>null</code>.</p>
- *
- * @param array the array to test
- * @return <code>true</code> if the array is empty or <code>null</code>
- * @since 2.1
- */
- public static boolean isEmpty(double[] array) {
- if (array == null || array.length == 0) {
- return true;
- }
- return false;
- }
- /**
- * <p>Checks if an array of primitive floats is empty or <code>null</code>.</p>
- *
- * @param array the array to test
- * @return <code>true</code> if the array is empty or <code>null</code>
- * @since 2.1
- */
- public static boolean isEmpty(float[] array) {
- if (array == null || array.length == 0) {
- return true;
- }
- return false;
- }
- /**
- * <p>Checks if an array of primitive booleans is empty or <code>null</code>.</p>
- *
- * @param array the array to test
- * @return <code>true</code> if the array is empty or <code>null</code>
- * @since 2.1
- */
- public static boolean isEmpty(boolean[] array) {
- if (array == null || array.length == 0) {
- return true;
- }
- return false;
- }
- /**
- * <p>Adds all the elements of the given arrays into a new array.</p>
- * <p>The new array contains all of the element of <code>array1</code> followed
- * by all of the elements <code>array2</code>. When an array is returned, it is always
- * a new array.</p>
- *
- * <pre>
- * ArrayUtils.addAll(null, null) = null
- * ArrayUtils.addAll(array1, null) = cloned copy of array1
- * ArrayUtils.addAll(null, array2) = cloned copy of array2
- * ArrayUtils.addAll([], []) = []
- * ArrayUtils.addAll([null], [null]) = [null, null]
- * ArrayUtils.addAll(["a", "b", "c"], ["1", "2", "3"]) = ["a", "b", "c", "1", "2", "3"]
- * </pre>
- *
- * @param array1 the first array whose elements are added to the new array, may be <code>null</code>
- * @param array2 the second array whose elements are added to the new array, may be <code>null</code>
- * @return The new array, <code>null</code> if <code>null</code> array inputs.
- * The type of the new array is the type of the first array.
- * @since 2.1
- */
- public static Object[] addAll(Object[] array1, Object[] array2) {
- if (array1 == null) {
- return clone(array2);
- } else if (array2 == null) {
- return clone(array1);
- }
- Object[] joinedArray = (Object[]) Array.newInstance(array1.getClass().getComponentType(),
- array1.length + array2.length);
- System.arraycopy(array1, 0, joinedArray, 0, array1.length);
- System.arraycopy(array2, 0, joinedArray, array1.length, array2.length);
- return joinedArray;
- }
- /**
- * <p>Adds all the elements of the given arrays into a new array.</p>
- * <p>The new array contains all of the element of <code>array1</code> followed
- * by all of the elements <code>array2</code>. When an array is returned, it is always
- * a new array.</p>
- *
- * <pre>
- * ArrayUtils.addAll(array1, null) = cloned copy of array1
- * ArrayUtils.addAll(null, array2) = cloned copy of array2
- * ArrayUtils.addAll([], []) = []
- * </pre>
- *
- * @param array1 the first array whose elements are added to the new array.
- * @param array2 the second array whose elements are added to the new array.
- * @return The new boolean[] array.
- * @since 2.1
- */
- public static boolean[] addAll(boolean[] array1, boolean[] array2) {
- if (array1 == null) {
- return clone(array2);
- } else if (array2 == null) {
- return clone(array1);
- }
- boolean[] joinedArray = new boolean[array1.length + array2.length];
- System.arraycopy(array1, 0, joinedArray, 0, array1.length);
- System.arraycopy(array2, 0, joinedArray, array1.length, array2.length);
- return joinedArray;
- }
- /**
- * <p>Adds all the elements of the given arrays into a new array.</p>
- * <p>The new array contains all of the element of <code>array1</code> followed
- * by all of the elements <code>array2</code>. When an array is returned, it is always
- * a new array.</p>
- *
- * <pre>
- * ArrayUtils.addAll(array1, null) = cloned copy of array1
- * ArrayUtils.addAll(null, array2) = cloned copy of array2
- * ArrayUtils.addAll([], []) = []
- * </pre>
- *
- * @param array1 the first array whose elements are added to the new array.
- * @param array2 the second array whose elements are added to the new array.
- * @return The new char[] array.
- * @since 2.1
- */
- public static char[] addAll(char[] array1, char[] array2) {
- if (array1 == null) {
- return clone(array2);
- } else if (array2 == null) {
- return clone(array1);
- }
- char[] joinedArray = new char[array1.length + array2.length];
- System.arraycopy(array1, 0, joinedArray, 0, array1.length);
- System.arraycopy(array2, 0, joinedArray, array1.length, array2.length);
- return joinedArray;
- }
- /**
- * <p>Adds all the elements of the given arrays into a new array.</p>
- * <p>The new array contains all of the element of <code>array1</code> followed
- * by all of the elements <code>array2</code>. When an array is returned, it is always
- * a new array.</p>
- *
- * <pre>
- * ArrayUtils.addAll(array1, null) = cloned copy of array1
- * ArrayUtils.addAll(null, array2) = cloned copy of array2
- * ArrayUtils.addAll([], []) = []
- * </pre>
- *
- * @param array1 the first array whose elements are added to the new array.
- * @param array2 the second array whose elements are added to the new array.
- * @return The new byte[] array.
- * @since 2.1
- */
- public static byte[] addAll(byte[] array1, byte[] array2) {
- if (array1 == null) {
- return clone(array2);
- } else if (array2 == null) {
- return clone(array1);
- }
- byte[] joinedArray = new byte[array1.length + array2.length];
- System.arraycopy(array1, 0, joinedArray, 0, array1.length);
- System.arraycopy(array2, 0, joinedArray, array1.length, array2.length);
- return joinedArray;
- }
- /**
- * <p>Adds all the elements of the given arrays into a new array.</p>
- * <p>The new array contains all of the element of <code>array1</code> followed
- * by all of the elements <code>array2</code>. When an array is returned, it is always
- * a new array.</p>
- *
- * <pre>
- * ArrayUtils.addAll(array1, null) = cloned copy of array1
- * ArrayUtils.addAll(null, array2) = cloned copy of array2
- * ArrayUtils.addAll([], []) = []
- * </pre>
- *
- * @param array1 the first array whose elements are added to the new array.
- * @param array2 the second array whose elements are added to the new array.
- * @return The new short[] array.
- * @since 2.1
- */
- public static short[] addAll(short[] array1, short[] array2) {
- if (array1 == null) {
- return clone(array2);
- } else if (array2 == null) {
- return clone(array1);
- }
- short[] joinedArray = new short[array1.length + array2.length];
- System.arraycopy(array1, 0, joinedArray, 0, array1.length);
- System.arraycopy(array2, 0, joinedArray, array1.length, array2.length);
- return joinedArray;
- }
- /**
- * <p>Adds all the elements of the given arrays into a new array.</p>
- * <p>The new array contains all of the element of <code>array1</code> followed
- * by all of the elements <code>array2</code>. When an array is returned, it is always
- * a new array.</p>
- *
- * <pre>
- * ArrayUtils.addAll(array1, null) = cloned copy of array1
- * ArrayUtils.addAll(null, array2) = cloned copy of array2
- * ArrayUtils.addAll([], []) = []
- * </pre>
- *
- * @param array1 the first array whose elements are added to the new array.
- * @param array2 the second array whose elements are added to the new array.
- * @return The new int[] array.
- * @since 2.1
- */
- public static int[] addAll(int[] array1, int[] array2) {
- if (array1 == null) {
- return clone(array2);
- } else if (array2 == null) {
- return clone(array1);
- }
- int[] joinedArray = new int[array1.length + array2.length];
- System.arraycopy(array1, 0, joinedArray, 0, array1.length);
- System.arraycopy(array2, 0, joinedArray, array1.length, array2.length);
- return joinedArray;
- }
- /**
- * <p>Adds all the elements of the given arrays into a new array.</p>
- * <p>The new array contains all of the element of <code>array1</code> followed
- * by all of the elements <code>array2</code>. When an array is returned, it is always
- * a new array.</p>
- *
- * <pre>
- * ArrayUtils.addAll(array1, null) = cloned copy of array1
- * ArrayUtils.addAll(null, array2) = cloned copy of array2
- * ArrayUtils.addAll([], []) = []
- * </pre>
- *
- * @param array1 the first array whose elements are added to the new array.
- * @param array2 the second array whose elements are added to the new array.
- * @return The new long[] array.
- * @since 2.1
- */
- public static long[] addAll(long[] array1, long[] array2) {
- if (array1 == null) {
- return clone(array2);
- } else if (array2 == null) {
- return clone(array1);
- }
- long[] joinedArray = new long[array1.length + array2.length];
- System.arraycopy(array1, 0, joinedArray, 0, array1.length);
- System.arraycopy(array2, 0, joinedArray, array1.length, array2.length);
- return joinedArray;
- }
- /**
- * <p>Adds all the elements of the given arrays into a new array.</p>
- * <p>The new array contains all of the element of <code>array1</code> followed
- * by all of the elements <code>array2</code>. When an array is returned, it is always
- * a new array.</p>
- *
- * <pre>
- * ArrayUtils.addAll(array1, null) = cloned copy of array1
- * ArrayUtils.addAll(null, array2) = cloned copy of array2
- * ArrayUtils.addAll([], []) = []
- * </pre>
- *
- * @param array1 the first array whose elements are added to the new array.
- * @param array2 the second array whose elements are added to the new array.
- * @return The new float[] array.
- * @since 2.1
- */
- public static float[] addAll(float[] array1, float[] array2) {
- if (array1 == null) {
- return clone(array2);
- } else if (array2 == null) {
- return clone(array1);
- }
- float[] joinedArray = new float[array1.length + array2.length];
- System.arraycopy(array1, 0, joinedArray, 0, array1.length);
- System.arraycopy(array2, 0, joinedArray, array1.length, array2.length);
- return joinedArray;
- }
- /**
- * <p>Adds all the elements of the given arrays into a new array.</p>
- * <p>The new array contains all of the element of <code>array1</code> followed
- * by all of the elements <code>array2</code>. When an array is returned, it is always
- * a new array.</p>
- *
- * <pre>
- * ArrayUtils.addAll(array1, null) = cloned copy of array1
- * ArrayUtils.addAll(null, array2) = cloned copy of array2
- * ArrayUtils.addAll([], []) = []
- * </pre>
- *
- * @param array1 the first array whose elements are added to the new array.
- * @param array2 the second array whose elements are added to the new array.
- * @return The new double[] array.
- * @since 2.1
- */
- public static double[] addAll(double[] array1, double[] array2) {
- if (array1 == null) {
- return clone(array2);
- } else if (array2 == null) {
- return clone(array1);
- }
- double[] joinedArray = new double[array1.length + array2.length];
- System.arraycopy(array1, 0, joinedArray, 0, array1.length);
- System.arraycopy(array2, 0, joinedArray, array1.length, array2.length);
- return joinedArray;
- }
- /**
- * <p>Copies the given array and adds the given element at the end of the new array.</p>
- *
- * <p>The new array contains the same elements of the input
- * array plus the given element in the last position. The component type of
- * the new array is the same as that of the input array.</p>
- *
- * <p>If the input array is <code>null</code>, a new one element array is returned
- * whose component type is the same as the element.</p>
- *
- * <pre>
- * ArrayUtils.add(null, null) = [null]
- * ArrayUtils.add(null, "a") = ["a"]
- * ArrayUtils.add(["a"], null) = ["a", null]
- * ArrayUtils.add(["a"], "b") = ["a", "b"]
- * ArrayUtils.add(["a", "b"], "c") = ["a", "b", "c"]
- * </pre>
- *
- * @param array the array to "add" the element to, may be <code>null</code>
- * @param element the object to add
- * @return A new array containing the existing elements plus the new element
- * @since 2.1
- */
- public static Object[] add(Object[] array, Object element) {
- Class type = array != null ? array.getClass() : (element != null ? element.getClass() : Object.class);
- Object[] newArray = (Object[]) copyArrayGrow1(array, type);
- newArray[newArray.length - 1] = element;
- return newArray;
- }
-
- /**
- * <p>Copies the given array and adds the given element at the end of the new array.</p>
- *
- * <p>The new array contains the same elements of the input
- * array plus the given element in the last position. The component type of
- * the new array is the same as that of the input array.</p>
- *
- * <p>If the input array is <code>null</code>, a new one element array is returned
- * whose component type is the same as the element.</p>
- *
- * <pre>
- * ArrayUtils.add(null, true) = [true]
- * ArrayUtils.add([true], false) = [true, false]
- * ArrayUtils.add([true, false], true) = [true, false, true]
- * </pre>
- *
- * @param array the array to copy and add the element to, may be <code>null</code>
- * @param element the object to add at the last index of the new array
- * @return A new array containing the existing elements plus the new element
- * @since 2.1
- */
- public static boolean[] add(boolean[] array, boolean element) {
- boolean[] newArray = (boolean[])copyArrayGrow1(array, Boolean.TYPE);
- newArray[newArray.length - 1] = element;
- return newArray;
- }
-
- /**
- * <p>Copies the given array and adds the given element at the end of the new array.</p>
- *
- * <p>The new array contains the same elements of the input
- * array plus the given element in the last position. The component type of
- * the new array is the same as that of the input array.</p>
- *
- * <p>If the input array is <code>null</code>, a new one element array is returned
- * whose component type is the same as the element.</p>
- *
- * <pre>
- * ArrayUtils.add(null, 0) = [0]
- * ArrayUtils.add([1], 0) = [1, 0]
- * ArrayUtils.add([1, 0], 1) = [1, 0, 1]
- * </pre>
- *
- * @param array the array to copy and add the element to, may be <code>null</code>
- * @param element the object to add at the last index of the new array
- * @return A new array containing the existing elements plus the new element
- * @since 2.1
- */
- public static byte[] add(byte[] array, byte element) {
- byte[] newArray = (byte[])copyArrayGrow1(array, Byte.TYPE);
- newArray[newArray.length - 1] = element;
- return newArray;
- }
-
- /**
- * <p>Copies the given array and adds the given element at the end of the new array.</p>
- *
- * <p>The new array contains the same elements of the input
- * array plus the given element in the last position. The component type of
- * the new array is the same as that of the input array.</p>
- *
- * <p>If the input array is <code>null</code>, a new one element array is returned
- * whose component type is the same as the element.</p>
- *
- * <pre>
- * ArrayUtils.add(null, '0') = ['0']
- * ArrayUtils.add(['1'], '0') = ['1', '0']
- * ArrayUtils.add(['1', '0'], '1') = ['1', '0', '1']
- * </pre>
- *
- * @param array the array to copy and add the element to, may be <code>null</code>
- * @param element the object to add at the last index of the new array
- * @return A new array containing the existing elements plus the new element
- * @since 2.1
- */
- public static char[] add(char[] array, char element) {
- char[] newArray = (char[])copyArrayGrow1(array, Character.TYPE);
- newArray[newArray.length - 1] = element;
- return newArray;
- }
-
- /**
- * <p>Copies the given array and adds the given element at the end of the new array.</p>
- *
- * <p>The new array contains the same elements of the input
- * array plus the given element in the last position. The component type of
- * the new array is the same as that of the input array.</p>
- *
- * <p>If the input array is <code>null</code>, a new one element array is returned
- * whose component type is the same as the element.</p>
- *
- * <pre>
- * ArrayUtils.add(null, 0) = [0]
- * ArrayUtils.add([1], 0) = [1, 0]
- * ArrayUtils.add([1, 0], 1) = [1, 0, 1]
- * </pre>
- *
- * @param array the array to copy and add the element to, may be <code>null</code>
- * @param element the object to add at the last index of the new array
- * @return A new array containing the existing elements plus the new element
- * @since 2.1
- */
- public static double[] add(double[] array, double element) {
- double[] newArray = (double[])copyArrayGrow1(array, Double.TYPE);
- newArray[newArray.length - 1] = element;
- return newArray;
- }
-
- /**
- * <p>Copies the given array and adds the given element at the end of the new array.</p>
- *
- * <p>The new array contains the same elements of the input
- * array plus the given element in the last position. The component type of
- * the new array is the same as that of the input array.</p>
- *
- * <p>If the input array is <code>null</code>, a new one element array is returned
- * whose component type is the same as the element.</p>
- *
- * <pre>
- * ArrayUtils.add(null, 0) = [0]
- * ArrayUtils.add([1], 0) = [1, 0]
- * ArrayUtils.add([1, 0], 1) = [1, 0, 1]
- * </pre>
- *
- * @param array the array to copy and add the element to, may be <code>null</code>
- * @param element the object to add at the last index of the new array
- * @return A new array containing the existing elements plus the new element
- * @since 2.1
- */
- public static float[] add(float[] array, float element) {
- float[] newArray = (float[])copyArrayGrow1(array, Float.TYPE);
- newArray[newArray.length - 1] = element;
- return newArray;
- }
-
- /**
- * <p>Copies the given array and adds the given element at the end of the new array.</p>
- *
- * <p>The new array contains the same elements of the input
- * array plus the given element in the last position. The component type of
- * the new array is the same as that of the input array.</p>
- *
- * <p>If the input array is <code>null</code>, a new one element array is returned
- * whose component type is the same as the element.</p>
- *
- * <pre>
- * ArrayUtils.add(null, 0) = [0]
- * ArrayUtils.add([1], 0) = [1, 0]
- * ArrayUtils.add([1, 0], 1) = [1, 0, 1]
- * </pre>
- *
- * @param array the array to copy and add the element to, may be <code>null</code>
- * @param element the object to add at the last index of the new array
- * @return A new array containing the existing elements plus the new element
- * @since 2.1
- */
- public static int[] add(int[] array, int element) {
- int[] newArray = (int[])copyArrayGrow1(array, Integer.TYPE);
- newArray[newArray.length - 1] = element;
- return newArray;
- }
-
- /**
- * <p>Copies the given array and adds the given element at the end of the new array.</p>
- *
- * <p>The new array contains the same elements of the input
- * array plus the given element in the last position. The component type of
- * the new array is the same as that of the input array.</p>
- *
- * <p>If the input array is <code>null</code>, a new one element array is returned
- * whose component type is the same as the element.</p>
- *
- * <pre>
- * ArrayUtils.add(null, 0) = [0]
- * ArrayUtils.add([1], 0) = [1, 0]
- * ArrayUtils.add([1, 0], 1) = [1, 0, 1]
- * </pre>
- *
- * @param array the array to copy and add the element to, may be <code>null</code>
- * @param element the object to add at the last index of the new array
- * @return A new array containing the existing elements plus the new element
- * @since 2.1
- */
- public static long[] add(long[] array, long element) {
- long[] newArray = (long[])copyArrayGrow1(array, Long.TYPE);
- newArray[newArray.length - 1] = element;
- return newArray;
- }
-
- /**
- * <p>Copies the given array and adds the given element at the end of the new array.</p>
- *
- * <p>The new array contains the same elements of the input
- * array plus the given element in the last position. The component type of
- * the new array is the same as that of the input array.</p>
- *
- * <p>If the input array is <code>null</code>, a new one element array is returned
- * whose component type is the same as the element.</p>
- *
- * <pre>
- * ArrayUtils.add(null, 0) = [0]
- * ArrayUtils.add([1], 0) = [1, 0]
- * ArrayUtils.add([1, 0], 1) = [1, 0, 1]
- * </pre>
- *
- * @param array the array to copy and add the element to, may be <code>null</code>
- * @param element the object to add at the last index of the new array
- * @return A new array containing the existing elements plus the new element
- * @since 2.1
- */
- public static short[] add(short[] array, short element) {
- short[] newArray = (short[])copyArrayGrow1(array, Short.TYPE);
- newArray[newArray.length - 1] = element;
- return newArray;
- }
-
- /**
- * Returns a copy of the given array of size 1 greater than the argument.
- * The last value of the array is left to the default value.
- *
- * @param array The array to copy, must not be <code>null</code>.
- * @param newArrayComponentType If <code>array</code> is <code>null</code>, create a
- * size 1 array of this type.
- * @return A new copy of the array of size 1 greater than the input.
- */
- private static Object copyArrayGrow1(Object array, Class newArrayComponentType) {
- if (array != null) {
- int arrayLength = Array.getLength(array);
- Object newArray = Array.newInstance(array.getClass().getComponentType(), arrayLength + 1);
- System.arraycopy(array, 0, newArray, 0, arrayLength);
- return newArray;
- }
- return Array.newInstance(newArrayComponentType, 1);
- }
-
- /**
- * <p>Inserts the specified element at the specified position in the array.
- * Shifts the element currently at that position (if any) and any subsequent
- * elements to the right (adds one to their indices).</p>
- *
- * <p>This method returns a new array with the same elements of the input
- * array plus the given element on the specified position. The component
- * type of the returned array is always the same as that of the input
- * array.</p>
- *
- * <p>If the input array is <code>null</code>, a new one element array is returned
- * whose component type is the same as the element.</p>
- *
- * <pre>
- * ArrayUtils.add(null, 0, null) = [null]
- * ArrayUtils.add(null, 0, "a") = ["a"]
- * ArrayUtils.add(["a"], 1, null) = ["a", null]
- * ArrayUtils.add(["a"], 1, "b") = ["a", "b"]
- * ArrayUtils.add(["a", "b"], 3, "c") = ["a", "b", "c"]
- * </pre>
- *
- * @param array the array to add the element to, may be <code>null</code>
- * @param index the position of the new object
- * @param element the object to add
- * @return A new array containing the existing elements and the new element
- * @throws IndexOutOfBoundsException if the index is out of range
- * (index < 0 || index > array.length).
- */
- public static Object[] add(Object[] array, int index, Object element) {
- Class clss = null;
- if (array != null) {
- clss = array.getClass().getComponentType();
- } else if (element != null) {
- clss = element.getClass();
- } else {
- return new Object[]{null};
- }
- return (Object[]) add(array, index, element, clss);
- }
-
- /**
- * <p>Inserts the specified element at the specified position in the array.
- * Shifts the element currently at that position (if any) and any subsequent
- * elements to the right (adds one to their indices).</p>
- *
- * <p>This method returns a new array with the same elements of the input
- * array plus the given element on the specified position. The component
- * type of the returned array is always the same as that of the input
- * array.</p>
- *
- * <p>If the input array is <code>null</code>, a new one element array is returned
- * whose component type is the same as the element.</p>
- *
- * <pre>
- * ArrayUtils.add(null, 0, true) = [true]
- * ArrayUtils.add([true], 0, false) = [false, true]
- * ArrayUtils.add([false], 1, true) = [false, true]
- * ArrayUtils.add([true, false], 1, true) = [true, true, false]
- * </pre>
- *
- * @param array the array to add the element to, may be <code>null</code>
- * @param index the position of the new object
- * @param element the object to add
- * @return A new array containing the existing elements and the new element
- * @throws IndexOutOfBoundsException if the index is out of range
- * (index < 0 || index > array.length).
- */
- public static boolean[] add(boolean[] array, int index, boolean element) {
- return (boolean[]) add(array, index, BooleanUtils.toBooleanObject(element), Boolean.TYPE);
- }
-
- /**
- * <p>Inserts the specified element at the specified position in the array.
- * Shifts the element currently at that position (if any) and any subsequent
- * elements to the right (adds one to their indices).</p>
- *
- * <p>This method returns a new array with the same elements of the input
- * array plus the given element on the specified position. The component
- * type of the returned array is always the same as that of the input
- * array.</p>
- *
- * <p>If the input array is <code>null</code>, a new one element array is returned
- * whose component type is the same as the element.</p>
- *
- * <pre>
- * ArrayUtils.add(null, 0, 'a') = ['a']
- * ArrayUtils.add(['a'], 0, 'b') = ['b', 'a']
- * ArrayUtils.add(['a', 'b'], 0, 'c') = ['c', 'a', 'b']
- * ArrayUtils.add(['a', 'b'], 1, 'k') = ['a', 'k', 'b']
- * ArrayUtils.add(['a', 'b', 'c'], 1, 't') = ['a', 't', 'b', 'c']
- * </pre>
- *
- * @param array the array to add the element to, may be <code>null</code>
- * @param index the position of the new object
- * @param element the object to add
- * @return A new array containing the existing elements and the new element
- * @throws IndexOutOfBoundsException if the index is out of range
- * (index < 0 || index > array.length).
- */
- public static char[] add(char[] array, int index, char element) {
- return (char[]) add(array, index, new Character(element), Character.TYPE);
- }
-
- /**
- * <p>Inserts the specified element at the specified position in the array.
- * Shifts the element currently at that position (if any) and any subsequent
- * elements to the right (adds one to their indices).</p>
- *
- * <p>This method returns a new array with the same elements of the input
- * array plus the given element on the specified position. The component
- * type of the returned array is always the same as that of the input
- * array.</p>
- *
- * <p>If the input array is <code>null</code>, a new one element array is returned
- * whose component type is the same as the element.</p>
- *
- * <pre>
- * ArrayUtils.add([1], 0, 2) = [2, 1]
- * ArrayUtils.add([2, 6], 2, 3) = [2, 6, 3]
- * ArrayUtils.add([2, 6], 0, 1) = [1, 2, 6]
- * ArrayUtils.add([2, 6, 3], 2, 1) = [2, 6, 1, 3]
- * </pre>
- *
- * @param array the array to add the element to, may be <code>null</code>
- * @param index the position of the new object
- * @param element the object to add
- * @return A new array containing the existing elements and the new element
- * @throws IndexOutOfBoundsException if the index is out of range
- * (index < 0 || index > array.length).
- */
- public static byte[] add(byte[] array, int index, byte element) {
- return (byte[]) add(array, index, new Byte(element), Byte.TYPE);
- }
-
- /**
- * <p>Inserts the specified element at the specified position in the array.
- * Shifts the element currently at that position (if any) and any subsequent
- * elements to the right (adds one to their indices).</p>
- *
- * <p>This method returns a new array with the same elements of the input
- * array plus the given element on the specified position. The component
- * type of the returned array is always the same as that of the input
- * array.</p>
- *
- * <p>If the input array is <code>null</code>, a new one element array is returned
- * whose component type is the same as the element.</p>
- *
- * <pre>
- * ArrayUtils.add([1], 0, 2) = [2, 1]
- * ArrayUtils.add([2, 6], 2, 10) = [2, 6, 10]
- * ArrayUtils.add([2, 6], 0, -4) = [-4, 2, 6]
- * ArrayUtils.add([2, 6, 3], 2, 1) = [2, 6, 1, 3]
- * </pre>
- *
- * @param array the array to add the element to, may be <code>null</code>
- * @param index the position of the new object
- * @param element the object to add
- * @return A new array containing the existing elements and the new element
- * @throws IndexOutOfBoundsException if the index is out of range
- * (index < 0 || index > array.length).
- */
- public static short[] add(short[] array, int index, short element) {
- return (short[]) add(array, index, new Short(element), Short.TYPE);
- }
-
- /**
- * <p>Inserts the specified element at the specified position in the array.
- * Shifts the element currently at that position (if any) and any subsequent
- * elements to the right (adds one to their indices).</p>
- *
- * <p>This method returns a new array with the same elements of the input
- * array plus the given element on the specified position. The component
- * type of the returned array is always the same as that of the input
- * array.</p>
- *
- * <p>If the input array is <code>null</code>, a new one element array is returned
- * whose component type is the same as the element.</p>
- *
- * <pre>
- * ArrayUtils.add([1], 0, 2) = [2, 1]
- * ArrayUtils.add([2, 6], 2, 10) = [2, 6, 10]
- * ArrayUtils.add([2, 6], 0, -4) = [-4, 2, 6]
- * ArrayUtils.add([2, 6, 3], 2, 1) = [2, 6, 1, 3]
- * </pre>
- *
- * @param array the array to add the element to, may be <code>null</code>
- * @param index the position of the new object
- * @param element the object to add
- * @return A new array containing the existing elements and the new element
- * @throws IndexOutOfBoundsException if the index is out of range
- * (index < 0 || index > array.length).
- */
- public static int[] add(int[] array, int index, int element) {
- return (int[]) add(array, index, new Integer(element), Integer.TYPE);
- }
-
- /**
- * <p>Inserts the specified element at the specified position in the array.
- * Shifts the element currently at that position (if any) and any subsequent
- * elements to the right (adds one to their indices).</p>
- *
- * <p>This method returns a new array with the same elements of the input
- * array plus the given element on the specified position. The component
- * type of the returned array is always the same as that of the input
- * array.</p>
- *
- * <p>If the input array is <code>null</code>, a new one element array is returned
- * whose component type is the same as the element.</p>
- *
- * <pre>
- * ArrayUtils.add([1L], 0, 2L) = [2L, 1L]
- * ArrayUtils.add([2L, 6L], 2, 10L) = [2L, 6L, 10L]
- * ArrayUtils.add([2L, 6L], 0, -4L) = [-4L, 2L, 6L]
- * ArrayUtils.add([2L, 6L, 3L], 2, 1L) = [2L, 6L, 1L, 3L]
- * </pre>
- *
- * @param array the array to add the element to, may be <code>null</code>
- * @param index the position of the new object
- * @param element the object to add
- * @return A new array containing the existing elements and the new element
- * @throws IndexOutOfBoundsException if the index is out of range
- * (index < 0 || index > array.length).
- */
- public static long[] add(long[] array, int index, long element) {
- return (long[]) add(array, index, new Long(element), Long.TYPE);
- }
-
- /**
- * <p>Inserts the specified element at the specified position in the array.
- * Shifts the element currently at that position (if any) and any subsequent
- * elements to the right (adds one to their indices).</p>
- *
- * <p>This method returns a new array with the same elements of the input
- * array plus the given element on the specified position. The component
- * type of the returned array is always the same as that of the input
- * array.</p>
- *
- * <p>If the input array is <code>null</code>, a new one element array is returned
- * whose component type is the same as the element.</p>
- *
- * <pre>
- * ArrayUtils.add([1.1f], 0, 2.2f) = [2.2f, 1.1f]
- * ArrayUtils.add([2.3f, 6.4f], 2, 10.5f) = [2.3f, 6.4f, 10.5f]
- * ArrayUtils.add([2.6f, 6.7f], 0, -4.8f) = [-4.8f, 2.6f, 6.7f]
- * ArrayUtils.add([2.9f, 6.0f, 0.3f], 2, 1.0f) = [2.9f, 6.0f, 1.0f, 0.3f]
- * </pre>
- *
- * @param array the array to add the element to, may be <code>null</code>
- * @param index the position of the new object
- * @param element the object to add
- * @return A new array containing the existing elements and the new element
- * @throws IndexOutOfBoundsException if the index is out of range
- * (index < 0 || index > array.length).
- */
- public static float[] add(float[] array, int index, float element) {
- return (float[]) add(array, index, new Float(element), Float.TYPE);
- }
-
- /**
- * <p>Inserts the specified element at the specified position in the array.
- * Shifts the element currently at that position (if any) and any subsequent
- * elements to the right (adds one to their indices).</p>
- *
- * <p>This method returns a new array with the same elements of the input
- * array plus the given element on the specified position. The component
- * type of the returned array is always the same as that of the input
- * array.</p>
- *
- * <p>If the input array is <code>null</code>, a new one element array is returned
- * whose component type is the same as the element.</p>
- *
- * <pre>
- * ArrayUtils.add([1.1], 0, 2.2) = [2.2, 1.1]
- * ArrayUtils.add([2.3, 6.4], 2, 10.5) = [2.3, 6.4, 10.5]
- * ArrayUtils.add([2.6, 6.7], 0, -4.8) = [-4.8, 2.6, 6.7]
- * ArrayUtils.add([2.9, 6.0, 0.3], 2, 1.0) = [2.9, 6.0, 1.0, 0.3]
- * </pre>
- *
- * @param array the array to add the element to, may be <code>null</code>
- * @param index the position of the new object
- * @param element the object to add
- * @return A new array containing the existing elements and the new element
- * @throws IndexOutOfBoundsException if the index is out of range
- * (index < 0 || index > array.length).
- */
- public static double[] add(double[] array, int index, double element) {
- return (double[]) add(array, index, new Double(element), Double.TYPE);
- }
-
- /**
- * Underlying implementation of add(array, index, element) methods.
- * The last parameter is the class, which may not equal element.getClass
- * for primitives.
- *
- * @param array the array to add the element to, may be <code>null</code>
- * @param index the position of the new object
- * @param element the object to add
- * @param clss the type of the element being added
- * @return A new array containing the existing elements and the new element
- */
- private static Object add(Object array, int index, Object element, Class clss) {
- if (array == null) {
- if (index != 0) {
- throw new IndexOutOfBoundsException("Index: " + index + ", Length: 0");
- }
- Object joinedArray = Array.newInstance(clss, 1);
- Array.set(joinedArray, 0, element);
- return joinedArray;
- }
- int length = Array.getLength(array);
- if (index > length || index < 0) {
- throw new IndexOutOfBoundsException("Index: " + index + ", Length: " + length);
- }
- Object result = Array.newInstance(clss, length + 1);
- System.arraycopy(array, 0, result, 0, index);
- Array.set(result, index, element);
- if (index < length) {
- System.arraycopy(array, index, result, index + 1, length - index);
- }
- return result;
- }
-
- /**
- * <p>Removes the element at the specified position from the specified array.
- * All subsequent elements are shifted to the left (substracts one from
- * their indices).</p>
- *
- * <p>This method returns a new array with the same elements of the input
- * array except the element on the specified position. The component
- * type of the returned array is always the same as that of the input
- * array.</p>
- *
- * <p>If the input array is <code>null</code>, an IndexOutOfBoundsException
- * will be thrown, because in that case no valid index can be specified.</p>
- *
- * <pre>
- * ArrayUtils.remove(["a"], 0) = []
- * ArrayUtils.remove(["a", "b"], 0) = ["b"]
- * ArrayUtils.remove(["a", "b"], 1) = ["a"]
- * ArrayUtils.remove(["a", "b", "c"], 1) = ["a", "c"]
- * </pre>
- *
- * @param array the array to remove the element from, may not be <code>null</code>
- * @param index the position of the element to be removed
- * @return A new array containing the existing elements except the element
- * at the specified position.
- * @throws IndexOutOfBoundsException if the index is out of range
- * (index < 0 || index >= array.length), or if the array is <code>null</code>.
- * @since 2.1
- */
- public static Object[] remove(Object[] array, int index) {
- return (Object[]) remove((Object) array, index);
- }
-
- /**
- * <p>Removes the first occurrence of the specified element from the
- * specified array. All subsequent elements are shifted to the left
- * (substracts one from their indices). If the array doesn't contains
- * such an element, no elements are removed from the array.</p>
- *
- * <p>This method returns a new array with the same elements of the input
- * array except the first occurrence of the specified element. The component
- * type of the returned array is always the same as that of the input
- * array.</p>
- *
- * <pre>
- * ArrayUtils.removeElement(null, "a") = null
- * ArrayUtils.removeElement([], "a") = []
- * ArrayUtils.removeElement(["a"], "b") = ["a"]
- * ArrayUtils.removeElement(["a", "b"], "a") = ["b"]
- * ArrayUtils.removeElement(["a", "b", "a"], "a") = ["b", "a"]
- * </pre>
- *
- * @param array the array to remove the element from, may be <code>null</code>
- * @param element the element to be removed
- * @return A new array containing the existing elements except the first
- * occurrence of the specified element.
- * @since 2.1
- */
- public static Object[] removeElement(Object[] array, Object element) {
- int index = indexOf(array, element);
- if (index == INDEX_NOT_FOUND) {
- return clone(array);
- }
- return remove(array, index);
- }
-
- /**
- * <p>Removes the element at the specified position from the specified array.
- * All subsequent elements are shifted to the left (substracts one from
- * their indices).</p>
- *
- * <p>This method returns a new array with the same elements of the input
- * array except the element on the specified position. The component
- * type of the returned array is always the same as that of the input
- * array.</p>
- *
- * <p>If the input array is <code>null</code>, an IndexOutOfBoundsException
- * will be thrown, because in that case no valid index can be specified.</p>
- *
- * <pre>
- * ArrayUtils.remove([true], 0) = []
- * ArrayUtils.remove([true, false], 0) = [false]
- * ArrayUtils.remove([true, false], 1) = [true]
- * ArrayUtils.remove([true, true, false], 1) = [true, false]
- * </pre>
- *
- * @param array the array to remove the element from, may not be <code>null</code>
- * @param index the position of the element to be removed
- * @return A new array containing the existing elements except the element
- * at the specified position.
- * @throws IndexOutOfBoundsException if the index is out of range
- * (index < 0 || index >= array.length), or if the array is <code>null</code>.
- * @since 2.1
- */
- public static boolean[] remove(boolean[] array, int index) {
- return (boolean[]) remove((Object) array, index);
- }
-
- /**
- * <p>Removes the first occurrence of the specified element from the
- * specified array. All subsequent elements are shifted to the left
- * (substracts one from their indices). If the array doesn't contains
- * such an element, no elements are removed from the array.</p>
- *
- * <p>This method returns a new array with the same elements of the input
- * array except the first occurrence of the specified element. The component
- * type of the returned array is always the same as that of the input
- * array.</p>
- *
- * <pre>
- * ArrayUtils.removeElement(null, true) = null
- * ArrayUtils.removeElement([], true) = []
- * ArrayUtils.removeElement([true], false) = [true]
- * ArrayUtils.removeElement([true, false], false) = [true]
- * ArrayUtils.removeElement([true, false, true], true) = [false, true]
- * </pre>
- *
- * @param array the array to remove the element from, may be <code>null</code>
- * @param element the element to be removed
- * @return A new array containing the existing elements except the first
- * occurrence of the specified element.
- * @since 2.1
- */
- public static boolean[] removeElement(boolean[] array, boolean element) {
- int index = indexOf(array, element);
- if (index == INDEX_NOT_FOUND) {
- return clone(array);
- }
- return remove(array, index);
- }
-
- /**
- * <p>Removes the element at the specified position from the specified array.
- * All subsequent elements are shifted to the left (substracts one from
- * their indices).</p>
- *
- * <p>This method returns a new array with the same elements of the input
- * array except the element on the specified position. The component
- * type of the returned array is always the same as that of the input
- * array.</p>
- *
- * <p>If the input array is <code>null</code>, an IndexOutOfBoundsException
- * will be thrown, because in that case no valid index can be specified.</p>
- *
- * <pre>
- * ArrayUtils.remove([1], 0) = []
- * ArrayUtils.remove([1, 0], 0) = [0]
- * ArrayUtils.remove([1, 0], 1) = [1]
- * ArrayUtils.remove([1, 0, 1], 1) = [1, 1]
- * </pre>
- *
- * @param array the array to remove the element from, may not be <code>null</code>
- * @param index the position of the element to be removed
- * @return A new array containing the existing elements except the element
- * at the specified position.
- * @throws IndexOutOfBoundsException if the index is out of range
- * (index < 0 || index >= array.length), or if the array is <code>null</code>.
- * @since 2.1
- */
- public static byte[] remove(byte[] array, int index) {
- return (byte[]) remove((Object) array, index);
- }
-
- /**
- * <p>Removes the first occurrence of the specified element from the
- * specified array. All subsequent elements are shifted to the left
- * (substracts one from their indices). If the array doesn't contains
- * such an element, no elements are removed from the array.</p>
- *
- * <p>This method returns a new array with the same elements of the input
- * array except the first occurrence of the specified element. The component
- * type of the returned array is always the same as that of the input
- * array.</p>
- *
- * <pre>
- * ArrayUtils.removeElement(null, 1) = null
- * ArrayUtils.removeElement([], 1) = []
- * ArrayUtils.removeElement([1], 0) = [1]
- * ArrayUtils.removeElement([1, 0], 0) = [1]
- * ArrayUtils.removeElement([1, 0, 1], 1) = [0, 1]
- * </pre>
- *
- * @param array the array to remove the element from, may be <code>null</code>
- * @param element the element to be removed
- * @return A new array containing the existing elements except the first
- * occurrence of the specified element.
- * @since 2.1
- */
- public static byte[] removeElement(byte[] array, byte element) {
- int index = indexOf(array, element);
- if (index == INDEX_NOT_FOUND) {
- return clone(array);
- }
- return remove(array, index);
- }
-
- /**
- * <p>Removes the element at the specified position from the specified array.
- * All subsequent elements are shifted to the left (substracts one from
- * their indices).</p>
- *
- * <p>This method returns a new array with the same elements of the input
- * array except the element on the specified position. The component
- * type of the returned array is always the same as that of the input
- * array.</p>
- *
- * <p>If the input array is <code>null</code>, an IndexOutOfBoundsException
- * will be thrown, because in that case no valid index can be specified.</p>
- *
- * <pre>
- * ArrayUtils.remove(['a'], 0) = []
- * ArrayUtils.remove(['a', 'b'], 0) = ['b']
- * ArrayUtils.remove(['a', 'b'], 1) = ['a']
- * ArrayUtils.remove(['a', 'b', 'c'], 1) = ['a', 'c']
- * </pre>
- *
- * @param array the array to remove the element from, may not be <code>null</code>
- * @param index the position of the element to be removed
- * @return A new array containing the existing elements except the element
- * at the specified position.
- * @throws IndexOutOfBoundsException if the index is out of range
- * (index < 0 || index >= array.length), or if the array is <code>null</code>.
- * @since 2.1
- */
- public static char[] remove(char[] array, int index) {
- return (char[]) remove((Object) array, index);
- }
-
- /**
- * <p>Removes the first occurrence of the specified element from the
- * specified array. All subsequent elements are shifted to the left
- * (substracts one from their indices). If the array doesn't contains
- * such an element, no elements are removed from the array.</p>
- *
- * <p>This method returns a new array with the same elements of the input
- * array except the first occurrence of the specified element. The component
- * type of the returned array is always the same as that of the input
- * array.</p>
- *
- * <pre>
- * ArrayUtils.removeElement(null, 'a') = null
- * ArrayUtils.removeElement([], 'a') = []
- * ArrayUtils.removeElement(['a'], 'b') = ['a']
- * ArrayUtils.removeElement(['a', 'b'], 'a') = ['b']
- * ArrayUtils.removeElement(['a', 'b', 'a'], 'a') = ['b', 'a']
- * </pre>
- *
- * @param array the array to remove the element from, may be <code>null</code>
- * @param element the element to be removed
- * @return A new array containing the existing elements except the first
- * occurrence of the specified element.
- * @since 2.1
- */
- public static char[] removeElement(char[] array, char element) {
- int index = indexOf(array, element);
- if (index == INDEX_NOT_FOUND) {
- return clone(array);
- }
- return remove(array, index);
- }
-
- /**
- * <p>Removes the element at the specified position from the specified array.
- * All subsequent elements are shifted to the left (substracts one from
- * their indices).</p>
- *
- * <p>This method returns a new array with the same elements of the input
- * array except the element on the specified position. The component
- * type of the returned array is always the same as that of the input
- * array.</p>
- *
- * <p>If the input array is <code>null</code>, an IndexOutOfBoundsException
- * will be thrown, because in that case no valid index can be specified.</p>
- *
- * <pre>
- * ArrayUtils.remove([1.1], 0) = []
- * ArrayUtils.remove([2.5, 6.0], 0) = [6.0]
- * ArrayUtils.remove([2.5, 6.0], 1) = [2.5]
- * ArrayUtils.remove([2.5, 6.0, 3.8], 1) = [2.5, 3.8]
- * </pre>
- *
- * @param array the array to remove the element from, may not be <code>null</code>
- * @param index the position of the element to be removed
- * @return A new array containing the existing elements except the element
- * at the specified position.
- * @throws IndexOutOfBoundsException if the index is out of range
- * (index < 0 || index >= array.length), or if the array is <code>null</code>.
- * @since 2.1
- */
- public static double[] remove(double[] array, int index) {
- return (double[]) remove((Object) array, index);
- }
-
- /**
- * <p>Removes the first occurrence of the specified element from the
- * specified array. All subsequent elements are shifted to the left
- * (substracts one from their indices). If the array doesn't contains
- * such an element, no elements are removed from the array.</p>
- *
- * <p>This method returns a new array with the same elements of the input
- * array except the first occurrence of the specified element. The component
- * type of the returned array is always the same as that of the input
- * array.</p>
- *
- * <pre>
- * ArrayUtils.removeElement(null, 1.1) = null
- * ArrayUtils.removeElement([], 1.1) = []
- * ArrayUtils.removeElement([1.1], 1.2) = [1.1]
- * ArrayUtils.removeElement([1.1, 2.3], 1.1) = [2.3]
- * ArrayUtils.removeElement([1.1, 2.3, 1.1], 1.1) = [2.3, 1.1]
- * </pre>
- *
- * @param array the array to remove the element from, may be <code>null</code>
- * @param element the element to be removed
- * @return A new array containing the existing elements except the first
- * occurrence of the specified element.
- * @since 2.1
- */
- public static double[] removeElement(double[] array, double element) {
- int index = indexOf(array, element);
- if (index == INDEX_NOT_FOUND) {
- return clone(array);
- }
- return remove(array, index);
- }
-
- /**
- * <p>Removes the element at the specified position from the specified array.
- * All subsequent elements are shifted to the left (substracts one from
- * their indices).</p>
- *
- * <p>This method returns a new array with the same elements of the input
- * array except the element on the specified position. The component
- * type of the returned array is always the same as that of the input
- * array.</p>
- *
- * <p>If the input array is <code>null</code>, an IndexOutOfBoundsException
- * will be thrown, because in that case no valid index can be specified.</p>
- *
- * <pre>
- * ArrayUtils.remove([1.1], 0) = []
- * ArrayUtils.remove([2.5, 6.0], 0) = [6.0]
- * ArrayUtils.remove([2.5, 6.0], 1) = [2.5]
- * ArrayUtils.remove([2.5, 6.0, 3.8], 1) = [2.5, 3.8]
- * </pre>
- *
- * @param array the array to remove the element from, may not be <code>null</code>
- * @param index the position of the element to be removed
- * @return A new array containing the existing elements except the element
- * at the specified position.
- * @throws IndexOutOfBoundsException if the index is out of range
- * (index < 0 || index >= array.length), or if the array is <code>null</code>.
- * @since 2.1
- */
- public static float[] remove(float[] array, int index) {
- return (float[]) remove((Object) array, index);
- }
-
- /**
- * <p>Removes the first occurrence of the specified element from the
- * specified array. All subsequent elements are shifted to the left
- * (substracts one from their indices). If the array doesn't contains
- * such an element, no elements are removed from the array.</p>
- *
- * <p>This method returns a new array with the same elements of the input
- * array except the first occurrence of the specified element. The component
- * type of the returned array is always the same as that of the input
- * array.</p>
- *
- * <pre>
- * ArrayUtils.removeElement(null, 1.1) = null
- * ArrayUtils.removeElement([], 1.1) = []
- * ArrayUtils.removeElement([1.1], 1.2) = [1.1]
- * ArrayUtils.removeElement([1.1, 2.3], 1.1) = [2.3]
- * ArrayUtils.removeElement([1.1, 2.3, 1.1], 1.1) = [2.3, 1.1]
- * </pre>
- *
- * @param array the array to remove the element from, may be <code>null</code>
- * @param element the element to be removed
- * @return A new array containing the existing elements except the first
- * occurrence of the specified element.
- * @since 2.1
- */
- public static float[] removeElement(float[] array, float element) {
- int index = indexOf(array, element);
- if (index == INDEX_NOT_FOUND) {
- return clone(array);
- }
- return remove(array, index);
- }
-
- /**
- * <p>Removes the element at the specified position from the specified array.
- * All subsequent elements are shifted to the left (substracts one from
- * their indices).</p>
- *
- * <p>This method returns a new array with the same elements of the input
- * array except the element on the specified position. The component
- * type of the returned array is always the same as that of the input
- * array.</p>
- *
- * <p>If the input array is <code>null</code>, an IndexOutOfBoundsException
- * will be thrown, because in that case no valid index can be specified.</p>
- *
- * <pre>
- * ArrayUtils.remove([1], 0) = []
- * ArrayUtils.remove([2, 6], 0) = [6]
- * ArrayUtils.remove([2, 6], 1) = [2]
- * ArrayUtils.remove([2, 6, 3], 1) = [2, 3]
- * </pre>
- *
- * @param array the array to remove the element from, may not be <code>null</code>
- * @param index the position of the element to be removed
- * @return A new array containing the existing elements except the element
- * at the specified position.
- * @throws IndexOutOfBoundsException if the index is out of range
- * (index < 0 || index >= array.length), or if the array is <code>null</code>.
- * @since 2.1
- */
- public static int[] remove(int[] array, int index) {
- return (int[]) remove((Object) array, index);
- }
-
- /**
- * <p>Removes the first occurrence of the specified element from the
- * specified array. All subsequent elements are shifted to the left
- * (substracts one from their indices). If the array doesn't contains
- * such an element, no elements are removed from the array.</p>
- *
- * <p>This method returns a new array with the same elements of the input
- * array except the first occurrence of the specified element. The component
- * type of the returned array is always the same as that of the input
- * array.</p>
- *
- * <pre>
- * ArrayUtils.removeElement(null, 1) = null
- * ArrayUtils.removeElement([], 1) = []
- * ArrayUtils.removeElement([1], 2) = [1]
- * ArrayUtils.removeElement([1, 3], 1) = [3]
- * ArrayUtils.removeElement([1, 3, 1], 1) = [3, 1]
- * </pre>
- *
- * @param array the array to remove the element from, may be <code>null</code>
- * @param element the element to be removed
- * @return A new array containing the existing elements except the first
- * occurrence of the specified element.
- * @since 2.1
- */
- public static int[] removeElement(int[] array, int element) {
- int index = indexOf(array, element);
- if (index == INDEX_NOT_FOUND) {
- return clone(array);
- }
- return remove(array, index);
- }
-
- /**
- * <p>Removes the element at the specified position from the specified array.
- * All subsequent elements are shifted to the left (substracts one from
- * their indices).</p>
- *
- * <p>This method returns a new array with the same elements of the input
- * array except the element on the specified position. The component
- * type of the returned array is always the same as that of the input
- * array.</p>
- *
- * <p>If the input array is <code>null</code>, an IndexOutOfBoundsException
- * will be thrown, because in that case no valid index can be specified.</p>
- *
- * <pre>
- * ArrayUtils.remove([1], 0) = []
- * ArrayUtils.remove([2, 6], 0) = [6]
- * ArrayUtils.remove([2, 6], 1) = [2]
- * ArrayUtils.remove([2, 6, 3], 1) = [2, 3]
- * </pre>
- *
- * @param array the array to remove the element from, may not be <code>null</code>
- * @param index the position of the element to be removed
- * @return A new array containing the existing elements except the element
- * at the specified position.
- * @throws IndexOutOfBoundsException if the index is out of range
- * (index < 0 || index >= array.length), or if the array is <code>null</code>.
- * @since 2.1
- */
- public static long[] remove(long[] array, int index) {
- return (long[]) remove((Object) array, index);
- }
-
- /**
- * <p>Removes the first occurrence of the specified element from the
- * specified array. All subsequent elements are shifted to the left
- * (substracts one from their indices). If the array doesn't contains
- * such an element, no elements are removed from the array.</p>
- *
- * <p>This method returns a new array with the same elements of the input
- * array except the first occurrence of the specified element. The component
- * type of the returned array is always the same as that of the input
- * array.</p>
- *
- * <pre>
- * ArrayUtils.removeElement(null, 1) = null
- * ArrayUtils.removeElement([], 1) = []
- * ArrayUtils.removeElement([1], 2) = [1]
- * ArrayUtils.removeElement([1, 3], 1) = [3]
- * ArrayUtils.removeElement([1, 3, 1], 1) = [3, 1]
- * </pre>
- *
- * @param array the array to remove the element from, may be <code>null</code>
- * @param element the element to be removed
- * @return A new array containing the existing elements except the first
- * occurrence of the specified element.
- * @since 2.1
- */
- public static long[] removeElement(long[] array, long element) {
- int index = indexOf(array, element);
- if (index == INDEX_NOT_FOUND) {
- return clone(array);
- }
- return remove(array, index);
- }
-
- /**
- * <p>Removes the element at the specified position from the specified array.
- * All subsequent elements are shifted to the left (substracts one from
- * their indices).</p>
- *
- * <p>This method returns a new array with the same elements of the input
- * array except the element on the specified position. The component
- * type of the returned array is always the same as that of the input
- * array.</p>
- *
- * <p>If the input array is <code>null</code>, an IndexOutOfBoundsException
- * will be thrown, because in that case no valid index can be specified.</p>
- *
- * <pre>
- * ArrayUtils.remove([1], 0) = []
- * ArrayUtils.remove([2, 6], 0) = [6]
- * ArrayUtils.remove([2, 6], 1) = [2]
- * ArrayUtils.remove([2, 6, 3], 1) = [2, 3]
- * </pre>
- *
- * @param array the array to remove the element from, may not be <code>null</code>
- * @param index the position of the element to be removed
- * @return A new array containing the existing elements except the element
- * at the specified position.
- * @throws IndexOutOfBoundsException if the index is out of range
- * (index < 0 || index >= array.length), or if the array is <code>null</code>.
- * @since 2.1
- */
- public static short[] remove(short[] array, int index) {
- return (short[]) remove((Object) array, index);
- }
-
- /**
- * <p>Removes the first occurrence of the specified element from the
- * specified array. All subsequent elements are shifted to the left
- * (substracts one from their indices). If the array doesn't contains
- * such an element, no elements are removed from the array.</p>
- *
- * <p>This method returns a new array with the same elements of the input
- * array except the first occurrence of the specified element. The component
- * type of the returned array is always the same as that of the input
- * array.</p>
- *
- * <pre>
- * ArrayUtils.removeElement(null, 1) = null
- * ArrayUtils.removeElement([], 1) = []
- * ArrayUtils.removeElement([1], 2) = [1]
- * ArrayUtils.removeElement([1, 3], 1) = [3]
- * ArrayUtils.removeElement([1, 3, 1], 1) = [3, 1]
- * </pre>
- *
- * @param array the array to remove the element from, may be <code>null</code>
- * @param element the element to be removed
- * @return A new array containing the existing elements except the first
- * occurrence of the specified element.
- * @since 2.1
- */
- public static short[] removeElement(short[] array, short element) {
- int index = indexOf(array, element);
- if (index == INDEX_NOT_FOUND) {
- return clone(array);
- }
- return remove(array, index);
- }
-
- /**
- * <p>Removes the element at the specified position from the specified array.
- * All subsequent elements are shifted to the left (substracts one from
- * their indices).</p>
- *
- * <p>This method returns a new array with the same elements of the input
- * array except the element on the specified position. The component
- * type of the returned array is always the same as that of the input
- * array.</p>
- *
- * <p>If the input array is <code>null</code>, an IndexOutOfBoundsException
- * will be thrown, because in that case no valid index can be specified.</p>
- *
- * @param array the array to remove the element from, may not be <code>null</code>
- * @param index the position of the element to be removed
- * @return A new array containing the existing elements except the element
- * at the specified position.
- * @throws IndexOutOfBoundsException if the index is out of range
- * (index < 0 || index >= array.length), or if the array is <code>null</code>.
- * @since 2.1
- */
- private static Object remove(Object array, int index) {
- int length = getLength(array);
- if (index < 0 || index >= length) {
- throw new IndexOutOfBoundsException("Index: " + index + ", Length: " + length);
- }
-
- Object result = Array.newInstance(array.getClass().getComponentType(), length - 1);
- System.arraycopy(array, 0, result, 0, index);
- if (index < length - 1) {
- System.arraycopy(array, index + 1, result, index, length - index - 1);
- }
-
- return result;
- }
- }