一个大学时候做的编译原理的实验.实验内容是正则表达式到NFA到DFA到最小化DFA最终生成词法分析代码的整个过程的演示.那时由于时间关系,词法分析代码自动生成部分还没完成.-When a university to do the compiling principle experiment. Experiment is a regular expression to NFA to DFA to minimal DFA of the final lexical analysis code to g