采用页式分配存储方案，通过分别计算不同算法的命中率来比较算法的优劣，同时也考虑页面大小及内存实际容量对命中率的影响；

实现OPT 算法 (最优置换算法) 、LRU 算法 (Least Recently) 、 FIFO 算法 (First IN First Out)的模拟；

-By page type allocation of storage solutions, were calculated by the hit rate of different algorithms to compare the merits of algorithms, taking into account the actual page size and memory capacity of the hit rate　achieve OPT algorithm (the optimal replacement algorithm), LRU algorithm ( Least Recently), FIFO algorithm (First IN First Out) of the simulation