C#數組的排序（正序逆序）

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   C#數組的排序（正序逆序）

   這種排序 超級簡單的 ！

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];              //建立一個變數相互交換                str[i]=str[str.Length-i-1];                      str[str.Length - i - 1] = temp;//相互交換            }            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];             //建立一個變數相互交換                num[i] = num[num.Length - i - 1];                num [num.Length - i - 1] = temp;//相互交換            }            foreach (var newnum in num)            {                Console.WriteLine("逆序排列：" + newnum);            }            Console.WriteLine("===================================");        }    }}

　　

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