REGEX for Numbers from -999 to 999 , but not -0

Question

This question already has answers here: question from:https://stackoverflow.com/questions/65880076/regex-for-numbers-from-999-to-999-but-not-0

Answer 1

You may use a negative lookahead assertion to disallow certain match:

^(?!-0$)-?[0-9][0-9]{0,2}$

RegEx Demo

Take note of (?!-0$) that says fail the match if we have -0 and end anchor after matching start anchor ^.