随机产生数字并排序

using System;
using System.Collections.Generic;
using System.Text;

namespace ArrayMax
{
    class Program
    {
        //产生一个包含不重复数字的随机数字的数组
        private int[] GetArray(int a)
        {
            //定义一个数组，接收随机产生的数字
            int [] array = new int [a];
            //声明Random类，随机产生１，１０１之间的数字
            Random rnd = new Random();
            //X用来接收随机产生的数字
            int x = 0;
            //Bool 用来表示是否有相同的数字
            for (int i = 0; i < a;i ++ )
            {
                //FOR循环产生数组里的元素
            label:
                    x = rnd.Next(1,a+1);
                    for (int j = 0; j < i;j ++ )
                    {
                        //for循环验证X是否合法
                        if (x ==array [j])
                        {
                            //如果数组中有该数字，则跳转到label处，重新产生数字，并验证
                            goto label;
                        }
                    }
                        //如果能走到这里，说明数组中还没有这个数字，
                        array[i] = x;
            }
            return array;
        }

        //对数组进行排序
        private void  Sort(int [] array)
        {
            int len = array.Length;
            if (len < 1)
                return;
            for (int i = 0; i < len;i ++ )
            {
                for (int j = i; j < len ;j ++ )
                {
                    if (array [i] < array [j])
                    {
                        array [i] = array[i] + array[j];
                        array [j] = array[i] - array[j];
                        array [i] = array[i] - array[j];
                    }
                }
            }
        }
        static void Main(string[] args)
        {
            int x = 0;
            if (args.Length > 0)
            {
                x = Convert.ToInt32(args[1]);
            }
            else
            {
                x = 100;
            }
            Program p = new Program();
            int[] array = p.GetArray(x);
            int[] Array = new int[x];
            array.CopyTo(Array,0 );
            p.Sort(Array);
            Console .WriteLine("排序前");
            for (int i = 0;i < array .Length ;i ++)
            {
                Console .WriteLine ("array[" +i +"]=" +array [i]);
            }
            Console .WriteLine ("排序后");
            for (int i = 0; i < Array.Length;i ++ )
            {
                Console.WriteLine("Array[" + i +"]=" +Array [i] );
            }
            Console.ReadLine();
        }
    }
}