模拟内存页面置换的五个算法fifo，opt，lfu，lru，clockAnalog memory page replacement-Analog memory page replacement

用c语言实现页面置换算法，包括三种算法FIFO、LRU、OPT。C language page replacement algorithms, including three algorithms FIFO, LRU, OPT.-C language page replacement algorithms, including three algorithms FIFO, LRU, OPT.