说明：  LRU页面调度算法实现缺页调试问题~这个程序当中调用lru()时出现错误，，请高手帮忙分析一下这个函数当中的错误，我现在很焦急的等待各位的解疑-LRU
(LRU paging algorithm to debug the problem of the missing pages to this program which calls lru () error, expert help to analyze the errors which this function, I am now very anxious waiting for you for eliminating doubt-LRU)