java 小技巧 利用for循环反转字符串

for循环倒着用  就可以实现字符串的反转

package com.heima.test;import java.util.Scanner;/** * 字符串反转 输入abc 输出cba *  * @author fenuang * */public class zifuchuanfanzhuan {public static void main(String[] args) {// TODO Auto-generated method stubScanner sc = new Scanner(System.in);System.out.println("请输入一个字符窜");String arr= sc.nextLine();char[] arr1 = arr.toCharArray();String arr2 = "";for (int i = arr1.length-1; i >= 0 ; i--) {arr2 = arr2 + arr1[i];}System.out.println(arr2);}}