题解 | #字符逆序#

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        while (in.hasNext()) { 
            String str = in.nextLine();
            for(int i = str.length()-1;i>=0;i--){
                System.out.print(str.charAt(i));
            }
        }
    }
}