扫描样本字符串，转换成NFA，继续转换，成为DFA，验证此字符串。,Scanning the sample string into a NFA, to continue to convert and become DFA, verify that the string.

这是正则表达式到NFA的转换源代码，自己编写的，希望有点用-This is a positive expression to NFA conversion source code I have written, I hope a little bit with