操作系统电梯调度问题，共5个电梯，20层，要求实现进程管理，上传的是java文件，编译后即可运行-OS elevator scheduling problem of 5 lifts, 20-story, required to achieve process management

电梯调度算法，java语言模仿电梯调度算法，仅供研究操作系统开发人员参考。-Elevator scheduling algorithm, java language imitate elevator scheduling algorithm, operating system developers for research reference.