说明：  设计一个有 N个进程并发运行的进程调度程序，进程调度算法 ：最高优先数优先的调度算法 。本实验模拟在单处理机环境下处理机的调度，了解处理机调度的过程。
(design is a complicated process N-running process scheduler, process scheduling algorithm : the highest priority to a few priority scheduling algorithm. The experimental simulation of the single-processor environment processor scheduling, understanding processor scheduling process.)