说明：   模拟动态分区存储管理方式的主存分配与回收 （1）确定主存空间分配表（空闲分区，已分配分区）； （2）采用一种分配方法（BF，WF或FF等）完成主存空间分配和回收； （3）编写主函数对所有工作进行测试。
(Simulate dynamic partition management for main memory storage allocation and recovery (1) determine the main memory space allocation table (free partitions have been allocated partition) (2) using a distribution method (BF, WF, or FF, etc.) to complete main memory space allocation and recycling (3) to prepare the main function of all the work to be tested.)