public class MyClass {
public static void main(String args[]) {
int[] array = {8, 3, 1, 3, 6, 5, 5, 1, 9, 0};
for (int i = 0; i < array.length - 1; i++) {
for (int j = i + 1; j < array.length; j++) {
if ((array[i] == array[j]) && (i != j)) {
System.out.println(array[j]);
break;
}
}
}
}
}
/*
run:
3
1
5
*/