CODEWITHSUNDEEP
regex
yvgwxgtyowvaiqndwo
yvgwxgtyowvaiqndwo

Reputation: 477

match last integer from behind

i have those strings

hello,world,1.fin
hello,world,start11.fin
hello,world,start11,then,end22.fin
hello,world,111,then,222,then,end333.fin
hello,world,111,then,222,then,end333threes.fin
hello,world,111,then,222,then,end333threes.fin444

and i need to match the endings numbers only before the . and after world, and i expect to get

1
11
22
333
333
333

i tried this but it does not match the last case ,world,.*?(\d+)\. link then i tried this but it only get from begin ,world,.*?(\d+).*\. link

.fin is not static and it does change randomly to .fin444 or .444

Upvotes: 3

Views: 48

Answers (2)

Nikita Chayka
Nikita Chayka

Reputation: 2137

This should work

,world,.*?(\d+)[^\d]*\.

See https://regex101.com/r/ilIsJb/1

Upvotes: 3

Wiktor Stribiżew
Wiktor Stribiżew

Reputation: 626689

You can use

,world,(?:.*\D)?(\d+)[^\W\d]*\.
,world,(?:.*\D)?(\d+)[^\d.]*\.

See the regex demo.

Details:

  • ,world, - a fixed string
  • (?:.*\D)? - an optional sequence of any zero or more chars other than line break chars as many as possible and then a non-digit char
  • (\d+) - Group 1: one or more digits
  • [^\W\d]* (or, [a-zA-Z_]* can also be used, or even [^\d.]* to match any zero or more chars other than digit and a dot) - zero or more word chars excluding digits
  • \. - a . char.

Upvotes: 2

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