Question

I have to validate that an input is just digits and its value is not ‘blacklisted’.
The expression I made is the following:

(?=[0-9]{3})(?=(?!^(111)|^(222)|^(333)|^(123)|^(321)\b)\b\w+)

I’ve tested it on a regex validator and works perfectly!

BUT because of framework limitations my regex is surrounded by and additional ^…& delimiters making it match with any input.

Im trying to came up with a new regex that works when surrounded by the delimiters, but Im having trouble figuring it out.

Does somebody have any idea on how to achieve this?

Answer 1

What about using

    ^(?!111|222|333|123|321)(\d{3,})$
//  ^                                 if this is added by the framework omit
//   ^^^^^^^^^^^^^^^^^^^^^^^          the first 3 numbers must not match any of these groups
//                           ^^       digit
//                              ^^^^  at least 3 times
//                                  ^ followed by end of string. Again if added by framework omit