Java Array Find getIndexOf(int i, int[] array)

Description

get Index Of

License

Apache License

Declaration

public static ArrayList<Integer> getIndexOf(int i, int[] array) 

Method Source Code

//package com.java2s;
//License from project: Apache License 

import java.util.ArrayList;

import java.util.Collection;

import java.util.Map;

public class Main {

    public static ArrayList<Integer> getIndexOf(int i, int[] array) {
        if (isEmpty(array)) {
            return null;
        }/*from  w w  w.j a v a  2s  .co  m*/
        ArrayList<Integer> result = new ArrayList<Integer>();
        for (int index = 0; index < array.length; index++) {
            int num = array[index];
            if (i == num) {
                result.add(index);
            }
        }
        return result;
    }

    public static boolean isEmpty(Collection<?> col) {
        if (col == null || col.size() == 0) {
            return true;
        } else {
            return false;
        }
    }

    public static <T> boolean isEmpty(T[] col) {
        if (col == null || col.length == 0) {
            return true;
        } else {
            return false;
        }
    }

    public static boolean isEmpty(int[] array) {
        if (array == null || array.length == 0) {
            return true;
        }
        return false;
    }

    public static boolean isEmpty(double[] array) {
        if (array == null || array.length == 0) {
            return true;
        }
        return false;
    }

    public static boolean isEmpty(byte[] array) {
        if (array == null || array.length == 0) {
            return true;
        } else {
            return false;
        }
    }

    public static boolean isEmpty(Map<?, ?> map) {
        if (map == null || map.size() == 0) {
            return true;
        } else {
            return false;
        }
    }
}

Related

1. findAllArgumentPermutations(Object[][] allArguments)
2. findAllOrientations(int[][] matrix)
3. getIndex(double income, String[] scopes)
4. getIndex(String[] array, String value)
5. getIndexObject(Object[] data, Object object)