public static void main(String[] args) {
   System.out.println("Enter the number to reverse: ");
   int num = TextIO.getInt();
   int reverse = 0;
   while (num != 0) {
     reverse = reverse * 10;
     reverse = reverse + num % 10;
     num = num / 10;
   }
   System.out.println(reverse);
 }