关于令牌环的omnet++仿真，有仿真的所有文件，只需点击exe文件即可。-Token Ring on the omnet++ Simulation, simulation of all the files there, just click the exe files.

该任务需要你为数学表达式构建一个单纯的语法分析程序lexer，它将一段输入的字符串转变为token(值)，token(值)里每个字符都属于数学表达式的组成部分。我们想将token(值)定义为如下几种(1)计算符号,+,-.(2)字母和下划线 (3)数字，这三者先不需要仔细区分。-In this assignment, you will build a simple lexer for arithmetic expressions. A lexer breaks an put str g to

opennlp是自然语言处理的开源工具，它是JAVA写的，可以再Eclipse中直接调用。上传的这写代码实现了英文分词代码的功能。-Opennlp is an open tool for natural language processing. It is written in JAVA. It can be used in Eclipse directly . The code uploaded is used to token English words.

对计算机网络令牌轮询协议进行模拟，使用java语言，用八个线程模拟了八台主机-Computer network token polling protocol simulation, the use of Java language, with eight threads to simulate the eight hosts