public class Do
{
  public static void main(String[] args)
  {
     int n = 12345;
     int t,r = 0;
     System.out.println("The original number : " + n);
   
     while ( n > 0 )
     {
       t = n % 10;
       r = r * 10 + t;
       n = n / 10;
     } 
     System.out.println("The reverse number : " + r);
  }
}