package MyPac;

public class Sort {
    public static int randomGenerator() {
        int n = (int) (Math.random() * 10);
        if (n == 0) {
            return (n + 1);
        }
        return n;
    }

    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;

        for(int i = 0; i < arr1.length; i+=1){
            arr1[i] = Sort.randomGenerator();
            System.out.print(arr1[i]+" | ");
        }
        System.out.println();
        for(int i = 0; i < arr2.length; i+=1){
            arr2[i] = Sort.randomGenerator();
            System.out.print(arr2[i]+" | ");
        }


        arr3 = Sort.compareArr(arr1, arr2);

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