CODEWITHSUNDEEP
regex
user3214294
user3214294

Reputation: 41

Match a number only in a certain range

I want to match a 3-digit number only from a webpage.

So for example if webpage has number 1 599-+ (white space between 1 and 5 and -+ signs after). I only want to capture/match numbers between 0 and 599-+ and nothing else.

My regex is: regex(?:^|(?:[^\d\s]\s*))([0-5]\d\d-+) but this one also matches "i 1599-+"

or regex(\^[0-5]?[0-9]?[0-9]-+$) doesnt work either...

Upvotes: 2

Views: 859

Answers (3)

saikiran.vsk
saikiran.vsk

Reputation: 1796

From the above I understood and developed this, I think this is what you needed.

/^[0-5]?[0-9]?[0-9][\+|-]?$/.test("599");

In the above regex I made + - as optional and it'll check for presence of any one sign. If you want in the order of -+ then try this /^[0-5]?[0-9]?[0-9][\-][\+]$/.test("99-+"); . Okay @user3214294

Upvotes: 0

Denys Séguret
Denys Séguret

Reputation: 382150

A solution would be to use this regular expression with a non capturing group matching either the start of the string or something that's not a digit (with a little more verbosity due to space handling) :

(?:^|(?:[^\d\s]\s*))([0-5]\d\d)

Examples (in javascript as you didn't specify a language) :

"1 599".match(/(?:^|(?:[^\d\s]\s*))([0-5]\d\d)/) => null
"a sentence with 1 599 inside".match(/(?:^|(?:[^\d\s]\s*))([0-5]\d\d)/) => null
"another with 599".match(/(?:^|(?:[^\d\s]\s*))([0-5]\d\d)/) => ["h 599", "599"]
"599 at the start".match(/(?:^|(?:[^\d\s]\s*))([0-5]\d\d)/) => ["599", "599"]

(desired group is at index 1)

Upvotes: 3

saikiran.vsk
saikiran.vsk

Reputation: 1796

I hope this is needed for you.Try it, if it is not fulfilling.Write a little more description.

/^[0-5]?[0-9]?[0-9]$/.test("599");

Upvotes: 1

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