NumberComparer.pizza

class NumberComparer implements COMPARER<Number> {

   public int compare(Number i, Number j) {
      int n1 = i.intValue();
      int n2 = j.intValue();
      if (n1 < n2) {return 1;};
      if (n2 < n1) {return -1;};
      return 0;
   }
}