题解 | #数字颠倒#

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner fzhinput = new Scanner(System.in);
        int zs = fzhinput.nextInt();
        String sc;
        StringBuilder stack = new StringBuilder();
        int i,x;
        if(zs==0){
            stack.append(zs);
        }
        else{
            while(zs>0){

                x = zs%10;
                stack.append(x);
                zs/=10;
            }
        } 
        System.out.println(stack);           
    }
}