题解 | #数字颠倒#

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();
            char st[] = str.toCharArray();
            for(int i=st.length-1;i>=0;i--){
                System.out.print(st[i]);
            }
        }
    }
}