RegularRegExpressionsEx101
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javascript
Submitted by anonymous - 9 minutes ago
String after $
Selects the string after the $ sign
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pcre
Submitted by anonymous - 2 hours ago
array redex recursion
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pcre
Submitted by anonymous - 6 hours ago
Bachmann SVI
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pcre
Submitted by anonymous - 8 hours ago
Lieferzeit extrahieren
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pcre
Submitted by anonymous - 8 hours ago
Lieferzeit extrahieren
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pcre
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Regex Password pattern
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python
Submitted by anonymous - 9 hours ago
Isin
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python
Submitted by anonymous - 9 hours ago
Sedol
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python
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Cusip
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pcre
Submitted by anonymous - 9 hours ago
First Line
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javascript
Submitted by anonymous - a day ago
Find a word (Case-Insensitive)
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pcre
Submitted by anonymous - a day ago
IPv4 validation
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pcre
Submitted by anonymous - a day ago
IPv6 validation
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pcre
Submitted by Blessy - a day ago
Match Valid IPv4 and IPv6
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pcre
Submitted by anonymous - 2 days ago
HackerRank - Forward References
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javascript
Submitted by anonymous - 2 days ago
点运算符 .
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pcre
Submitted by anonymous - 3 days ago
HackerRank - Branch Reset Groups
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Library Entry
Close
Roman numbers
javascript
/
^(?!$)M{0,2}(?:M(?=CM(?:XC)?(?:IX)?$))?(?:C(?=M[^CD]*(?:XC)?[^CD]*$))?M?(?:C(?=D[^C]*(?:XC)?[^C]*$))?D?C{0,2}(?:C(?=XC(?:IX)?$))?(?:X(?=C[^X]*(?:IX)?[^X]*$)(?!.*L))?C?(?:X(?=L[^X]*(?:IX)?[^X]*$))?L?X{0,2}(?:X(?=IX$))?(?:I(?=[XV]$))?X?V?I{0,3}$
/
Description

This regex matches roman numbers from 1 (I) to 3999 (MMMCMXCIX)

Submitted by Nicolò Ribaudo - 4 years ago
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