package com.day7.one;
import java.util.Scanner;
public class Test2 {
/**
* 字符串反转:"abcd"到"dcba" */ public static void main(String[] args) { Scanner sc=new Scanner(System.in); String s1=sc.nextLine();//将键盘的录入的字符串存储在s1中 char[] s2=s1.toCharArray(); for (int i = 0; i < (s2.length)/2; i++) { char c; c=s2[i]; s2[i]=s2[s2.length-1-i]; s2[s2.length-1-i]=c; } //方法1 for (int i = 0; i < s2.length; i++) { System.out.print(s2[i]); } //方法2,推荐使用方法2 String s3=String.valueOf(s2);//将字符数组转成字符串 System.out.println(s3); }}