Android Array Contains contains(int[] array, int valueToFind)

Description

Checks if the value is in the given array.

The method returns false if a null array is passed in.

License

Apache License

Parameter

Parameter	Description
array	the array to search through
valueToFind	the value to find

Return

true if the array contains the object

Declaration

public static boolean contains(int[] array, int valueToFind) 

Method Source Code

/*/*  w w  w .  j a va2 s. c  o  m*/
 * 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.
 */

import java.lang.reflect.Array;
import java.util.HashMap;
import java.util.Map;

public class Main{
    /**
     * 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>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;
    }
    /**
     * <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;
    }
    /**
     * <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;
    }
    /**
     * <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;
    }
    /**
     * <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;
    }
    /**
     * <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;
    }
    /**
     * <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;
    }
    /**
     * <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;
    }
    /**
     * <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;
    }
    /**
     * <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 if (array.getClass().getComponentType()
                .isInstance(objectToFind)) {
            for (int i = startIndex; i < array.length; i++) {
                if (objectToFind.equals(array[i])) {
                    return i;
                }
            }
        }
        return INDEX_NOT_FOUND;
    }
    /**
     * <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 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 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 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 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 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 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 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>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) {
        return array == null || array.length == 0;
    }
    /**
     * <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) {
        return array == null || array.length == 0;
    }
    /**
     * <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) {
        return array == null || array.length == 0;
    }
    /**
     * <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) {
        return array == null || array.length == 0;
    }
    /**
     * <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) {
        return array == null || array.length == 0;
    }
    /**
     * <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) {
        return array == null || array.length == 0;
    }
    /**
     * <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) {
        return array == null || array.length == 0;
    }
    /**
     * <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) {
        return array == null || array.length == 0;
    }
    /**
     * <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) {
        return array == null || array.length == 0;
    }
}

Related

1. contains(final int[] pItems, final int pItem)
2. contains(final long[] pItems, final long pItem)
3. contains(final short[] pItems, final short pItem)
4. contains(float[] array, float valueToFind)
5. contains(int[] array, int value)
6. contains(long[] array, long valueToFind)
7. contains(short[] array, short valueToFind)