题解 | #字符串反转#

import java.util.*;
public class Main{
    public static void main (String[] args){
        Scanner sc = new Scanner(System.in);
        char[] a = sc.next().toCharArray();
        for (int i = a.length - 1; i >= 0; i--){
            System.out.print(a[i]);
        }
     }
}