进程的并发性的测试程序

给一个很有趣的进程并发性的小例子：

        static void Main(string[] args)
        {
            new Thread(WriteX).Start();
            new Thread(WriteY ).Start();
            WriteZ();
            Console.ReadKey();
        }
        static void WriteX()
        {
            Console.WriteLine($"线程编号X:{Thread.CurrentThread.ManagedThreadId}");
            for (int i = 0; i < 1000; i++)
                Console.Write("x");
        }
        static void WriteY()
        {
            Console.WriteLine($"线程编号Y:{Thread.CurrentThread.ManagedThreadId}");
            for (int i = 0; i < 1000; i++)
                Console.Write("y");
        }
        static void WriteZ()
        {
            Console.WriteLine($"线程编号Z:{Thread.CurrentThread.ManagedThreadId}");
            for (int i = 0; i < 1000; i++)
                Console.Write("z");
        }
    }

一共开了三个进程，分别打印X,  Y，Z，看运行结果（每次都是随机的）