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.
A report based on months of expert witness testimony found the summit between the UK and the EU at Lancaster House last May had “substantially improved the overall political relationship” after years of Brussels-bashing by the Conservatives.
他们的工作，全是非医疗类的辅助服务，却精准戳中了医院和患者的需求：，推荐阅读爱思助手下载最新版本获取更多信息
Copyright © 1997-2026 by www.people.com.cn all rights reserved
，更多细节参见体育直播
На Камчатке произошло сильное землетрясениеНа Камчатке произошло землетрясение магнитудой 5,5。业内人士推荐safew官方下载作为进阶阅读
arXivLabs is a framework that allows collaborators to develop and share new arXiv features directly on our website.