说明：  1、编程接收从键盘上输入的页面使用序列，序列长度不确定，根据输入内容不同而变化。 2、设置分配策略（全局分配或局部分配），设定每个进程分给的页数以及整个物理内存容量 3、显示出了页面走向图 4、计算出该序列的缺页率 5、内存不足时的淘汰算法采用LRU法
(1, programmed to receive input from the keyboard on the page using the sequence, sequence length uncertainty, varies according to input. 2, set the allocation strategy (global distribution or partial distribution), set the number of pages assigned to each process and the entire physical memory capacity of 3, indicating that the page into Figure 4 to calculate the rate of the sequence of the missing page 5, out of memory eliminated when the algorithm uses the LRU method)