C#多线程协同完成一个任务

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using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading;namespace ConsoleApplication3{    class Program    {        static long Sum=0;        static object mylock;        static void Main(string[] args)        {            long n = 0;            long s1 = DateTime.Now.Ticks;            for (int i = 0; i <= 100; i++)            {                n += i;                Thread.Sleep(10);             }            long s2 = DateTime.Now.Ticks;            Console.Write("----------------单线程运行-------------------\nsum:" + n + "\n\r所花时间(纳秒):" + (s2 - s1)+"\n");            Console.Write("----------------双线程运行-------------------\n");            Thread t1 = new Thread(add1);            Thread t2 = new Thread(add2);            mylock = new object();            s1 = DateTime.Now.Ticks;            t1.Start();            t2.Start();            t1.Join();            t2.Join();            s2 = DateTime.Now.Ticks;            Console.Write("sum:" + n + "\n\r所花时间(纳秒):" + (s2 - s1));            Console.ReadKey();        }        static void add1()        {            long n = 0;            for (int i = 0; i <= 50; i++)            {                n += i;                Thread.Sleep(10);            }            Monitor.Enter(mylock);            Sum += n;            Console.Write("线程一运行完毕,Sum:" + Sum+"\n");            Monitor.Exit(mylock);                               }        static void add2()        {            long n = 0;            for (int i = 51; i <= 100; i++)            {                n += i;                Thread.Sleep(10);            }            Monitor.Enter(mylock);            Sum += n;            Console.Write("线程二运行完毕,Sum:" + Sum + "\n");            Monitor.Exit(mylock);                   }    }}
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