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大佬博客：https://blog.csdn.net/lee18254290736/article/details/77278769 对于正常的字符串模式匹配，主串长度为m，子串为n，时间复杂度会到达O（m*n），而如果用KMP算法，复杂度将会减少线型时间O（m+n）。设主串为ptr="ababaa 阅读全文
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Polycarp is working on a new operating system called BerOS. He asks you to help with implementation of a file suggestion feature. There are n files on 阅读全文
摘要：
Polycarp has a lot of work to do. Recently he has learned a new time management rule: "if a task takes five minutes or less, do it immediately". Polyc 阅读全文