class Program {
public static void main(String[] args) {
int[] arr = {2, 4, 1, 2, 6, 4, 3, 3, 5, 7, 8, 9, 8};
int size = arr.length;
int j;
for (int i = 0; i < size; i++) {
for (j = 0; j < size; j++) {
if (arr[i] == arr[j] && i != j) {
break;
}
}
if (j == size) {
System.out.print(arr[i] + " ");
}
}
}
}
/*
run:
1 6 5 7 9
*/