Boxing and Unboxing

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

namespace Boxing
{
    class Program
    {
        static void Main(string[] args)
        {
            int count;
            DateTime startTime = DateTime.Now;
            ArrayList AyList = new ArrayList();

            // 重复5次测试 
            for (int i = 5; i > 0; i--)
            {
                AyList.Clear();

                // 将值类型加入myArrayList数组 
                for (count = 0; count < 5000; count++)
                {
                    Console.WriteLine("开始Boxing.....");
                    //Boxing
                    AyList.Add(count); 
                }
                
                // 重新得到值
                int j;
                for (count = 0; count < 5000; count++)
                {
                    Console.WriteLine("开始Unboxing....");
                    //Unboxing
                    j = (int)AyList[count];
                }
            }

            // 打印结果
            DateTime endTime = DateTime.Now;
            Console.WriteLine("开始时间: {0} 结束时间: {1} 耗时: {2}", startTime, endTime, endTime - startTime);
            
            Console.WriteLine("按回车结束程序...");
        }
    }
}