Csharp拆装箱

using System;
using System.Collections;
using System.Collections.Generic;
using System.Diagnostics;
namespace AlgorithmTest07_拆装箱
{
    class Program
    {
        static void Main(string[] args)
        {
            int n = 100000000;
            Stopwatch t1 = new Stopwatch();//计时器
            Stopwatch t2 = new Stopwatch();//计时器
            Console.WriteLine("测试值类型对象int");
            t1.Start();//开始计时
            List<int> L = new List<int>();
            for (int i = 0; i < n; i++)
            {
                L.Add(i);//不发生装箱
                int x = L[i];//不发生拆箱
            }
            t1.Stop();//停止计时
            Console.WriteLine(t1.ElapsedMilliseconds + "ms");
            t2.Start();//开始计时
            ArrayList aL = new ArrayList();
            for (int i = 0; i < n; i++)
            {
                aL.Add(i);//发生装箱[值类型(int)转引用类型(object),ArrayList是object引用类型]
                int x = (int)aL[i];//发生拆箱引用类型强转值类型
            }
            t2.Stop();
            Console.WriteLine(t2.ElapsedMilliseconds + "ms");
            Console.ReadKey();
        }
    }
}