演示了linux下的常用页面置换算法（FIFO,LRU,OPT,LFU,NUR），并计算了相应的命中率。程序用随机函数产生指令序列，然后变换成相应的页地址流。-demonstration of the commonly used algorithm replacement pages (FIFO, the LRU, OPT, LFU, NUR), and calculated the corresponding hit rate. Procedures used functions to gen