以前只知道排序用冒泡，今天发现一个新的方法分享一下但是感觉有点大材小用的感觉
            引用 using System.Management;
            int[] num = new int[] { 2, 5, 4, 1 };
            Hashtable ht = new Hashtable();
            for (int i = 0; i < num.Length; i++)
            {
                ht.Add(num[i], i);
            }
            ArrayList al = new ArrayList(ht.Keys);
            al.Sort();
            foreach (int item in al)
            {
                Console.WriteLine(item);
            }