Regex Golf 练习记录
正则表达式的练习网站:https://alf.nu/RegexGolf
共17道题:只能说从第10题开始就很变态了,就是看看答案好了
1.Warmup: foo 2.Anchors: k$ 或 ick$ 3.It never ends: fu\b 4.Ranges: ^[a-f]*$ 或 [a-f]{4} 5.Backrefs:(...).*\1 6.Abba: ^(?!.*(.)(.)\2\1) 7.A man, a plan: ^(.)(.).*\2\1$ 或 ^(.)[^p].*\1$ 或 (.)(.).?\2\1.?$ 8.Prime: ^(?!(xx+?)\1+$) 或 ^(?!(..+)\1+$) 9.Four: (.)(.\1){3} 10.Order: ^.{5}[^e]?$ 11.Triples: 00($|3|6|9|12|15)|4.2|.1.+4|55|.17 12.Glob: ai|c$|^p|[bcnrw][bnopr] 13.Balance: ^(<(<(<(<(<(<<>>)*>)*>)*>)*>)*>)*$ 14.Powers: ^(?!(.(..)+)\1*$) 15.Long count: ^((.+)0 \2+1 ?)*$ 16.Alphabetical: .r.{32}r|a.{10}te|n.n.. 17.Powers2: ^((x+)\2(?=\2$))*x$