一个模拟泊松随机过程的小程序。可以计算系统平均等待时间，和平均对列长度。系统参数如 到来速率及离开速率均可在头文件里修改。另外通过修改头文件factorK可以将到来序列的概率分布改为Erlang分布。-a simulated Poisson random process of small programs. System can calculate the average waiting time, and the average length of the list. The system parameters such as the rate of arrival and departure rates can be found in the first document changes. Through the first revised document will come factorK sequence probability distribution instead Erlang distribution.