输入一个数，将这个数倒叙输出

Scanner sc = new Scanner(System.in);
        int d,y = 0;
          int x = sc.nextInt();
          while (x != 0){
          d = x % 10;
          y = y * 10 + d;
          x = x / 10;
          }
          System.out.println(y);

经典程序设计