实现了正则表达式转NFA，NFA转DFA，DFA最简化的过程。并可输出DFA到图像。-It can translate Regular Expression into NFA, NFA into DFA, and minimize the DFA. The result can be printed as a graph.

由正则表达式构造DFA的程序，并可以对输入串模拟正则表达式匹配-This is a C program used in compiling the given regular expression into an equivalent DFA, simulated through tracking State sets.