发些好文链接

A*算法入门http://www.cppblog.com/mythit/archive/2009/04/19/80492.aspx

AC自动机算法详解http://www.cppblog.com/mythit/archive/2015/05/10/80633.html#210605

KMP字符串模式匹配详解 http://blog.csdn.net/sjf0115/article/details/8579484