题解 | #反向输出一个四位数#

import java.util.Scanner;

/**
 * @author zmstart
 * @create 2022-03-20 19:39
 */
public class Main {
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        int num = scan.nextInt();

        StringBuffer buffer = new StringBuffer(String.valueOf(num));
        StringBuffer reverse = buffer.reverse();
        System.out.println(reverse.toString());
    }
}