I want regex such that it accept any 9 digit number except 123456789 and 987654321

Question

Acceptable input : any 9 digit number

Not acceptable : 123456789 and 987654321

I am using [0-9]{9} but I want extra condition as well

score 1 · Answer 1 · answered Nov 19 '22 at 18:22

1

I would suggest that, as you only have two exceptions, you write the regex to confirm it's a 9-digit numeric number, and then special case the two edge cases you mention. Not as technically challenging, but much easier to read the code.

answered Nov 19 '22 at 18:22

Black Light

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score 1 · Accepted Answer · answered Nov 19 '22 at 18:31

1

Try:

^(?!123456789|987654321)\d{9}$

Regex demo.

^ - beginning of string

(?!123456789|987654321) - don't continue matching if 123456789 or 987654321 is found

\d{9} - match 9 digits

$ - end of string

answered Nov 19 '22 at 18:31

Andrej Kesely

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I want regex such that it accept any 9 digit number except 123456789 and 987654321

2 Answers2