Dang!! I knew there would be a regex for it... spent almost an hour trying to come up with it... finally quit and went with ifs and substrings :(

At the end we narrow the result to the second item of the array. Why does it return array with 2 items?

solutions like this make me want to understand the incantations of regex. well done

Use spoiler flag next time. That is an anti-pattern, if the method already returns a boolean simply return the method.

I like to have a reference tab opened beside just in case

love learning about new functions! thank you

floor/integer division! that would have saved me three lines.