package MyPac;

public class Sort {

    public static int[] randomGenerator(int[]arr) {
        int temp[] = new int[arr.length];
        for(int i = 0; i < arr.length; i+=1){
            temp[i] = (int) (Math.random() * 100);
        }
        return temp;
    }

    public static int[] compareArr(int[] arr1, int[] arr2) {
        int[] temp = new int[arr1.length + arr2.length];
        for (int i = 0; i < arr1.length; i += 1) {
            temp[i] = arr1[i];
        }

        for (int i = 0; i < arr2.length; i += 1) {
            temp[arr1.length + i] = arr2[i];
        }
        System.out.println();

        /*compare the last 3 digits(the size of the second array) with the first 5 (the size of the first array)
        eliminate any duplicate in the array*/
        for(int i = 0; i < arr2.length; i +=1){
            for (int k = 0; k < arr1.length; k+=1){
                if(temp[i + arr1.length] == temp[k]){
                    temp[i + arr1.length] = -1;
                    temp[k] = -1;
                }
            }
        }
        return temp;
    }
}

========================================================================================================================

package MyPac;

public class Tester {
    public static void main(String[] args) {
        int[] arr1 = new int[5];
        int[] arr2 = new int[3];
        int[] arr3;

        arr1 = Sort.randomGenerator(arr1);
        arr2 = Sort.randomGenerator(arr2);
        arr3 = Sort.compareArr(arr1, arr2);

        for(int i:arr3){
            System.out.print(i+" | ");
        }
    }
}