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);
        while(sc.hasNextLine()){
            String s=sc.nextLine();
            StringBuilder sb=new StringBuilder();
            System.out.println(sb.append(s).reverse().toString().toLowerCase());
            //利用StringBuilder实现字符反转，toLowerCase（）转换为小写字母
            
        }
    }
}