//Array数组
            Stopwatch stopWatch = new Stopwatch();//计时器：用于准确的测量运行时间
            stopWatch.Start();
            Console.WriteLine("开始计时初始化数组：");
            int[] intArray = new int[10000000];
            for (int i = 0; i < 10000000; i++)
            {
                intArray[i] = i + 1;
            }
            stopWatch.Stop();
            Console.WriteLine($"初始化长度为10000000的int数组共耗时{stopWatch.ElapsedMilliseconds.ToString()}毫秒！");
　　　　　　　//初始化长度为1000000的int数组共耗时：63毫秒；

            //ArrayList数组
            Stopwatch stopWatch = new Stopwatch();//计时器：用于准确的测量运行时间
            stopWatch.Start();
            Console.WriteLine("开始计时初始化ArrayList数组：");
            ArrayList arrListByLength = new ArrayList(10000000);//指定数组长度
            
            for (int i = 0; i < 10000000; i++)
            {
                arrListByLength.Add(i + 1);
            }
            stopWatch.Stop();
            Console.WriteLine($"ArryList集合存储长度为10000000共耗时{stopWatch.ElapsedMilliseconds.ToString()}毫秒！");

            stopWatch.Restart();
            ArrayList arrList = new ArrayList();//不指定数组长度
            for (int i = 0; i < 10000000; i++)
            {
                arrList.Add(i + 1);
            }
            stopWatch.Stop();
            Console.WriteLine($"ArryList集合不指定存储长度共耗时{stopWatch.ElapsedMilliseconds.ToString()}毫秒！");
            //ArrayList集合指定存储长度为10000000共耗时110毫秒！
            //ArrayList集合不指定存储长度共耗时135毫秒！

            //List泛型
            Stopwatch stopWatch = new Stopwatch();//计时器：用于准确的测量运行时间
            stopWatch.Start();
            List<int> list = new List<int>(10000000);//指定数组长度
            Console.WriteLine("开始计时初始化List泛型数组：");
            for (int i = 0; i < 10000000; i++)
            {
                list.Add(1 + 1);
            }
            stopWatch.Stop();
            Console.WriteLine($"List泛型集合存储长度为10000000共耗时{stopWatch.ElapsedMilliseconds.ToString()}毫秒！");

            stopWatch.Restart();

            list = new List<int>();//不指定数组长度
            for (int i = 0; i < 10000000; i++)
            {
                list.Add(1 + 1);
            }
            stopWatch.Stop();
            Console.WriteLine($"List泛型集合不指定存储长度共耗时{stopWatch.ElapsedMilliseconds.ToString()}毫秒！");
            //List泛型集合指定存储长度为10000000共耗时80毫秒！
            //List泛型集合不指定存储长度共耗时110毫秒！

            //LinkedList链表
            Stopwatch stopWatch = new Stopwatch();//计时器：用于准确的测量运行时间
            stopWatch.Start();
            LinkedList<int> list = new LinkedList<int>();//指定数组长度
            Console.WriteLine("开始计时初始化LinkedList链表数组：");
            for (int i = 0; i < 10000000; i++)
            {
                list.AddFirst(1 + 1);
            }
            stopWatch.Stop();
            Console.WriteLine($"LinkedList链表集合共耗时{stopWatch.ElapsedMilliseconds.ToString()}毫秒！");
            //LinkedList链表集合不指定存储长度共耗时1934毫秒！