Java字符串01-字符串反转输出

字符串反转

package com.clover.demo;

import java.util.Arrays;

public class Test_StringReverse_0810 {
    public static void main(String[] args) {
//        思路：1.将字符串拆分为单个字符 2.查找中间位置 3.首尾相加=len 4.交换
        String line = "abcdef";
        char[] chs=line.toCharArray();//转换为字符数组
        System.out.println(Arrays.toString(chs));
        int a= chs.length;//字符数组的长度
        System.out.println(a);
        int start=0;
        int end=a-1;
        if(a%2!=0){
            //奇数
            //中位数的坐标
            int middle=(chs.length-1)/2;
            //交换
            for(int i=0;i<chs.length-1;i++){
                if(i<middle){
                    char tmp = 0;
                    tmp=chs[i];
                    chs[i]=chs[chs.length-1-i];
                    chs[chs.length-1-i]= tmp;                    
                }
            }        
        }else{
            //偶数
            //中间2位数的坐标
            int middle= chs.length/2;
            int middle_1=middle-1;
            char tmp = 0;
            tmp=chs[middle];
            chs[middle]=chs[middle_1];
            chs[middle_1]= tmp;    
            
            //交换
            for(int i=0;i<chs.length/2-1;i++){
                if(i<middle_1){
                    char tmp1 = 0;
                    tmp1=chs[i];
                    chs[i]=chs[chs.length-1-i];
                    chs[chs.length-1-i]= tmp1;                    
                }
            }
            }
        System.out.println(Arrays.toString(chs));
        
        }
    
    }