题解 | #字符逆序#

import java.util.Scanner;

public class Main {

public static void main(String[] args) {
    // TODO Auto-generated method stub
    Scanner sc=new Scanner(System.in);
   
    char[] s=sc.nextLine().toCharArray();
    StringBuffer relsut= new StringBuffer();
    for(int i=s.length;i>0;i--){
       relsut.append(s[i-1]);
    }
    System.out.print(relsut);
    
}

}