商场入口人数统计程序 说明： 某一家商场共有4个出入口，假设每一个顾客进入商场时对入口的选择具有随机性。现在需要统计在某一时段内每个入口的顾客数，以及进...

商场入口人数统计程序 说明： 某一家商场共有4个出入口，假设每一个顾客进入商场时对入口的选择具有随机性。现在需要统计在某一时段内每个入口的顾客数，以及进入商场的总顾客数。请利用线程同步及线程调度技术模拟一个实时计数系统。 -The number of statistical procedures mall entrance Description: A one store a total of four entrances, suppose a customer into the store for each entry when the choice is random. Now need statistics for each entry in a given period of time the number of customers, as well as the total number of customers into the store. Please use the thread synchronization and thread scheduling simulate a real-time counting system.