模拟LRU页面置换算法---操作系统的相关知识-Simulate LRU page replacement algorithm--- operating system

学操作系统时写的页面置换算法，包括三种常见的算法，希望对学习操作系统的同学有帮助。-Learning to write the operating system page replacement algorithms, including three common algorithms, hope to learn the operating system help students.