Regex for 0-360 and null [closed]

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I am trying to find regular expression for my project. The regular expression should either accept values between 0 and 360 or empty(null) value.

Answer 1

Slightly simplified regex of @aelor

^(?:36[0]|3[0-5][0-9]|[12][0-9][0-9]|[1-9]?[0-9])?$

Debuggex Demo

Answer 2

you need this:

^(?:\s*|0|(?:36[0]|3[0-5][0-9]|[12][0-9][0-9]|[1-9][0-9]|[1-9]))$