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Regex expression to match the string

原文 2017-10-16 10:18:32 6 1 javascript/ regex

我有一个需要处理以下正则表达式的要求： - 不得包含任何字母顺序超过 3 个连续字母（通过 - abc、bcd、aabcd、abcdd、abcc、cdee、ghid、stua | FAIL - abcd , bcde, cdef, ghijklm)

1 answers

It is a little long but I think this is what you are looking for:

\w*((abcd)|(bcde)|(cdef)|(defg)|(efgh)|(fghi)|(ghij)|(hijk)|(ijkl)|(jklm)|
(klmn)|(lmno)|(mnop)|(nopq)|(opqr)|(pqrs)|(qrst)|(rstu)|(stuv)|(tuvw)|(uvwx)|
(vwxy)|(wxyz))\w*

this pattern matches all failing strings. The idea is simple: if a string has a sequence with 4 letters in a row is invalid.

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