targil 2

public class Targil2 {
    public static void main(String[] args) {
        int[] myArr;
        int[] arr1 = {87, 12, 0, 32};
        int[] arr2 = {0, 87, 13, 21, 56};

        myArr = findDuplicate(arr1, arr2);
        for (int item : myArr) {
            System.out.print(item + " ");
        }
    }

    public static int[] findDuplicate(int[] arr1, int[] arr2) {
        int size = arr1.length < arr2.length ? arr1.length : arr2.length;
        int[] result = new int[size];
        int pointer = 0;
        for (int counter = 0; counter < arr1.length; counter += 1) {
            for (int counter2 = 0; counter2 < arr2.length; counter2 += 1) {
                if (arr1[counter] == arr2[counter2]) {
                    result[pointer]=arr1[counter];
                    pointer++;
                }
            }
        } //->result 36584
        result=clearArray(result,pointer);
        return result; //36777
    }

    public static int[] clearArray(int[] result, int pointer){
        int[] cleanResult=new int[pointer];
        for (int counter=0;counter<pointer;counter+=1){
            cleanResult[counter]=result[counter];
        }
        return cleanResult; //result - 36777
    }
}