题解 | #数字颠倒#

import java.util.Scanner;
public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int num = scanner.nextInt();
        String str = num + "";
        StringBuffer sbu = new StringBuffer(str);
        StringBuffer s = sbu.reverse();
        System.out.println(s);
    }
}