CODEWITHSUNDEEP
regex
Max
Max

Reputation: 13

Get house number formats with regex

I am struggeling to find the right regex to match with certain house number formats:

Following formats shall be found:

1 / 1a / 1a-z

What should not match is something like: 1 Building 1

So far I got '^\d[A-Za-z]?[-]?[A-Za-z]?$' which works for all cases but also matches 1ab.

So how can I add the requirement of having only 1 letter after the digit?

Upvotes: 0

Views: 237

Answers (1)

maxcampman
maxcampman

Reputation: 156

I believe the regular expression you are aiming for is something along the lines of ^\d+([A-Za-z](-[A-Za-z])?)?$

I'll break this down:

  • \d represents any digit
  • the + means 1 or more of (so \d+ matches 1, 12, 123, etc.)
  • the parentheses ( and ) contain a group
  • ? means zero or one of
  • [A-Za-z] matches any character in the ranges A-Z or a-z
  • [A-Za-z](-[A-Za-z])? means a letter, optionally followed by a hyphen and another letter

For a visualisation, see here (tool not mine)

Upvotes: 1

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