Armstrong

 while(nu != 0)
        {
            rem = nu%10;
            num = num + rem*rem*rem;
            nu = nu/10;
        }

153 = 1 pow3 + 5 pow 3 +m pow3

int num = Integer.parseInt(args[0]);
  int n = num;                                   //use to check at last time
  int check = 0, remainder;
  while (num > 0) {
   remainder = num % 10;
   check = check + (int) Math.pow(remainder, 3);
   num = num / 10;
  }
  if (check == n)
   System.out.println(n + " is an Armstrong Number");
  else
   System.out.println(n + " is not a Armstrong Number");
 }