OJ------字符串反转

输入：abcd

输出：dcba

面试考过

import java.util.*;
public class Main{
public static void main(String[] args){
Scanner sc=new Scanner(System.in);
while(sc.hasNext()){
StringBuffer s=new StringBuffer(sc.nextLine());
System.out.print(s.reverse());
}
sc.close();
}}