Lazy DFAs (2010) are a clever optimization to mitigate the O(2^m) blowup of DFA construction, by only constructing the states that you actually visit. lazy DFAs reduce the theoretical automata construction time to either O(2^m) or O(n), whichever is lower. you could argue that it’s theoretically no longer linear time, since you could have a regex that creates a new state for every character in the input, but in practice you will keep revisiting the same states. for all intents and purposes it behaves more like O(n) with some initial wind-up time. the main downside of lazy DFAs is that they are more complex to implement, and you have to ship a compiler as part of your regex algorithm. i want to highlight Rust regex and RE2 as excellent implementations of this approach, which you can also see in the benchmarks.
You owe us for rich history, proud Welshman Matthew Rhys tells United States
，更多细节参见体育直播
В Волгограде начался пожар после атаки ВСУMash: После атаки ВСУ в Волгограде начался пожар。谷歌浏览器【最新下载地址】是该领域的重要参考
Виктория Кондратьева (Редактор отдела «Мир»)，这一点在同城约会中也有详细论述
I found the Lenovo ThinkPad to rule them all - and its modular RAM changes everything