Java Array Index Of arrayIndexOf(int needle, int[] haystack)

Description

Sequentially search through an array, return the index of first needle element in haystack or -1, if not found.

License

Open Source License

Declaration

public static int arrayIndexOf(int needle, int[] haystack) 

Method Source Code

//package com.java2s;
/*/*w ww. j  a  v  a2 s .c  om*/
 * Copyright (c) 2008-2019, Hazelcast, Inc. All Rights Reserved.
 *
 * Licensed 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.
 */

public class Main {
    /**
     * Sequentially search through an array, return the index of first {@code
     * needle} element in {@code haystack} or -1, if not found.
     */
    public static int arrayIndexOf(int needle, int[] haystack) {
        for (int i = 0; i < haystack.length; i++) {
            if (haystack[i] == needle) {
                return i;
            }
        }
        return -1;
    }
}

Related

1. arrayIndex(T[] arr, T item)
2. arrayIndexCheck(char[] text, int startPos, int endPos)
3. arrayIndexClean(String indx)
4. arrayIndexFor(final String raw)
5. ArrayIndexOf(byte[] data, byte[] dest)
6. arrayIndexOf(int value, int[] arr)
7. arrayIndexOf(Object[] array, Object element)
8. arrayIndexOffset(int index, long baseOffset, long indexScale)
9. indexOf(byte[] array, byte[] target, int fromIndex)