10个线程完成从1加到100 等高手 一百分相送

Question

用c#实现 用10个线程完成从1加到100

Answer 1

参照：
http://topic.csdn.net/u/20100504/10/247c7dbf-3d0a-4b6d-aaa9-da7327804667.html?15972

Answer 2

http://msdn.microsoft.com/zh-cn/library/48cfdff6(VS.80).aspx实现多线程的计算，例子不错，可以看看

Answer 3

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;namespace ConsoleApplication5 {
    class Program {
        static void Main(string[] args) {
            Console.WriteLine(value);
            Thread[] t = new Thread[10];
            for (int i = 0 ; i < 10 ; i++) {
                ares[i] = new AutoResetEvent(false);
                t[i] = new Thread(M);
                t[i].Start(i);
            }
            WaitHandle.WaitAll(ares);
            Console.WriteLine(value);
            Console.ReadKey();
        }
        static AutoResetEvent[] ares = new AutoResetEvent[10];
        static object o = new object();
        static int value = 0;
        static void M(object i) {
            lock (o) {
                while (value !=100) {
                    value++;
                }
                ares[int.Parse(i.ToString())].Set();
            }
        }
    }
}

Answer 4

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;namespace ConsoleApplication5 {
    class Program {
        static void Main(string[] args) {
            Console.WriteLine(value);
            Thread[] t = new Thread[10];
            for (int i = 0 ; i < 10 ; i++) {
                ares[i] = new AutoResetEvent(false);
                t[i] = new Thread(M);
                t[i].Start(i);
            }
            WaitHandle.WaitAll(ares);
            Console.WriteLine(value);
            Console.ReadKey();
        }
        static AutoResetEvent[] ares = new AutoResetEvent[10];
        static object o = new object();
        static int value = 1;
        static void M(object i) {
            lock (o) {
                while (value % 10 != 0) {
                    value++;
                }
                if (value != 100)
                    value++;
                ares[int.Parse(i.ToString())].Set();
            }
        }
    }
}

Answer 5

        private void button1_Click(object sender, EventArgs e)
        {            Thread[] t= new Thread[10];
            int iTotal = 0;
            for (int i = 0; i < t.Length; i++)
            {
                t[i] = new Thread(new ParameterizedThreadStart(delegate(object o)
                {
                    int k = (int)o * 10+1;
                    for (int j = k; j < k + 10; j++)
                        iTotal += j;
                }));
                t[i].Start(i);
                t[i].Join();
            }            MessageBox.Show(iTotal.ToString());
        }

Answer 6

12楼把start和join写在一起，所以不会十个线程同时执行吧...

Answer 7

不会同时执行，可以把Join移出来，另外写一个循环执行行Join

Answer 8

C#4 用,System.Threading.Tasks.Task应该更简单 代码参考：using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;namespace ConsoleApplication7 {
    class Program {
        static void Main(string[] args) {
            Task[] ts = new Task[10];
            int value = 0;
            ts[0] = new Task(() => {
                for (int i = 0 ; i < 10 ; i++) {
                    value++;
                }
            });
            ts[0].Start();
            for (int i = 0 ; i < 10 - 1 ; i++) {    
                //ts[i+1]=new Task(
                ts[i + 1] = ts[i].ContinueWith(pt => {
                    if (value < 100)
                        for (int j = 0 ; j < 10 ; j++) {
                            value++;
                        }
                });
            }
            Task.WaitAll(ts);
            Console.WriteLine(value);
            Console.ReadKey();
        }
    }
}

Answer 9

不要自己创建线程了，有现成的库支持
namespace ConsoleApplication3
{
    sealed class CalculateSeg
    {
        public int start, end;
        public CalculateSeg(int _start, int _end)
        {
            start = _start;
            end = _end;
        }
    }
    class Program
    {
        static void Main(string[] args)
        {
            for (int i = 0; i < 10; ++i)
            {
                System.ComponentModel.BackgroundWorker bkThread = new System.ComponentModel.BackgroundWorker();
                bkThread.RunWorkerCompleted += new System.ComponentModel.RunWorkerCompletedEventHandler(bkThread_RunWorkerCompleted);
                bkThread.DoWork += new System.ComponentModel.DoWorkEventHandler(bkThread_DoWork); 
                bkThread.RunWorkerAsync(new CalculateSeg(i * 10 + 1, i * 10 + 10));
            }
            Console.ReadKey();
        }        static void bkThread_DoWork(object sender, System.ComponentModel.DoWorkEventArgs e)
        {
            CalculateSeg seg = e.Argument as CalculateSeg;
            int ret = 0;
            for (int i = seg.start; i <= seg.end; ++i)
            {
                Console.WriteLine(i);
                ret += i;
            }
            e.Result = ret;
        }
        static int sum = 0;                
        static void bkThread_RunWorkerCompleted(object sender, System.ComponentModel.RunWorkerCompletedEventArgs e)
        {
            sum += (int)e.Result;
            Console.WriteLine("sum={0} ", sum);
        }
    }
}

Answer 10

          private int i = 0;
        private int x = 0;        public Form1()
        {            Thread t1 = new Thread(T1);            Thread t2 = new Thread(T2);            t1.Start();
            t2.Start();
        }      public void T1()
        {
            while ( i <=100)
            {
                x += i++;
            }
            MessageBox.Show(x.ToString());
        }        public void T2()
        {
            while (i<=100)
            {
                x += i++;
            }
            MessageBox.Show(x.ToString());
        }

Answer 11

没怎么优化了，基本上是这样做的
调用
for (int i = 0; i < 10; i++)
            {
                MyThread thread = new MyThread("Thread" + i);
                thread.Start();
            }
——————————————
using System;
using System.Collections.Generic;
using System.Text;
using System.Threading;namespace ConsoleApplication1
{
    class MyThread
    {
        private static int num = 1;
        private static int count = 0;
        private static object _lockObj = new object();
        private Thread _thread = null;
        private string _name = string.Empty;        public MyThread(string name)
        {
            _name = name;
            if (_thread == null)
                _thread = new Thread(new ThreadStart(ThreadMethod));
        }        public void Start()
        {
            if (null != _thread)
                _thread.Start();        }        private void ThreadMethod()
        {
            while (true)
            {
                lock (_lockObj)
                {
                    //Console.WriteLine(_name);
                    if (num < 100)
                    {
                        count += num;
                        num += 1;
                    }
                    if (num == 100)
                    {
                        Console.WriteLine("1到100和是：" + count);
                        break;
                    }
                }            }
            if (null != _thread)
            {
                //Console.WriteLine("线程已关闭");
                _thread.Abort();
            }
        }
    }
}