算法：数组的反转

Posted 2022-09-29 helloworld0903

package com.atguigu;

public class Fanzhuan 
    public static void main(String[] args) 
        //数组的反转
        //方法一
        String[] arr=new String[]"JJ","DD","MM","BB","GG","AA";
        for(int i=0;i<arr.length/2;i++)
            String temp=arr[i];
            arr[i]=arr[arr.length-i-1];
            arr[arr.length-i-1]=temp;
        
        //方法二
        for(int i=0,j=arr.length-1;i<j;i++,j--)
            String temp=arr[i];
            arr[i]=arr[j];
            arr[j]=temp;
        
        for(int i=0;i<arr.length;i++)
            System.out.print(arr[i]+‘\t‘);