擅长:python、mysql、java
<p>它是一些算法的组合-看看这个</p>
<p><a href="https://stackoverflow.com/questions/18139660/python-string-in-operator-implementation-algorithm-and-time-complexity">Python string 'in' operator implementation algorithm and time complexity</a></p>
<p>或者这个</p>
<p><a href="http://effbot.org/zone/stringlib.htm" rel="nofollow noreferrer">http://effbot.org/zone/stringlib.htm</a></p>