进程调度模拟程序：假设有10个进程需要在CPU上执行，分别用：

 　　先进先出调度算法；

 　　基于优先级的调度算法；

 　　最短执行时间调度算法

确定这10个进程在CPU上的执行过程。要求每次进程调度时在屏幕上显示：

 　　当前执行进程；

 　　就绪队列；

 　　等待队列

-Process scheduling simulation program: Suppose there are 10 processes need to execute on the CPU, respectively: 　FIFO scheduling algorithm　　priority-based scheduling algorithm　　shortest execution time scheduling algorithm to determine which 10 processes running on the CPU process. Every time process scheduling requirements displayed on the screen: 　current implementation process　　ready queue　　waiting queue