摘要：
static void Main(string[] args) { Regex reg = new Regex("the"); string str = "today the ,the"; Match matchSet; matchSet = reg.Match(str); if (matchSet 阅读全文
摘要：
参考 https://www.cnblogs.com/kakakade/p/4562467.html https://www.cnblogs.com/tonysuen/archive/2010/03/04/1678447.html Length IndexOf Substring() split j 阅读全文