设计程序模拟FIFO页面置换算法的工作过程。假设内存中分配给每个进程的最小物理块数为m，在进程运行过程中要访问的页面个数为n，页面访问序列为P1, … ,Pn，分别利用不同的页面置换算法调度进程的页面访问序列，给出页面访问序列的置换过程，并计算每种算法缺页次数和缺页率。-The design process of the analog FIFO page replacement algorithm work process. Suppose the minimum number of physical blocks allocated to each process in memory is m, the page number in the process during operation to access to n, page views sequence P1, ..., Pn, each with different page replacement algorithm scheduling process page access sequence permutation process given page access sequences, and each algorithm calculated the number of missing pages and page rate.