C#数组的排序（正序逆序）

C#数组的排序（正序逆序）

这种排序 超级简单的 ！

using System;using System.Collections.Generic;using System.Linq;using System.Text;namespace Consoleapplication4{    class PRogram    {        static void Main(string[] args)        {                           string[] str = { "d","h","a","c","g","t","e","u","b"};                        var lowtohigh = from p in str orderby p select p; //linq            str = lowtohigh.ToArray();            foreach (var item in str)            {                Console.WriteLine("正序排列" + item);//正序排列            }            //=================================================            for (int i = 0; i < str.Length/2;i ++ )            {                string temp=str[i];              //新建一个变量相互交换                str[i]=str[str.Length-i-1];                      str[str.Length - i - 1] = temp;//相互交换            }            foreach (var newstr in str)            {                Console.WriteLine("逆序排列："+newstr);            }            Console.WriteLine("===================================");           //###############################################            int[] num = { 5, 78, 9, 1, 8, 4, 2, 88, 3 };            var lowtohigh1 = from p in num orderby p select p;            num = lowtohigh1.ToArray();            foreach (var num1 in num)            {                Console.WriteLine(num1);//正序排列            }            for (int i = 0; i < num.Length / 2;i++ )            {               int temp =num[i];             //新建一个变量相互交换                num[i] = num[num.Length - i - 1];                num [num.Length - i - 1] = temp;//相互交换            }            foreach (var newnum in num)            {                Console.WriteLine("逆序排列：" + newnum);            }            Console.WriteLine("===================================");        }    }}

结果：