logo语言中的“龟图”，此程序即实现了“龟图”的功能。-language logo of "turtle", and this program is to achieve a "turtle map" function.

AC算法的简单实现，能实现模式的建立和检测。标志位标志模式在字符串的位置-AC algorithm is simple to achieve, to achieve model building and testing. Flag logo position in the string model