O(n^2) It doesnt look like best practices at all in this case

great!

oh no oh god no i gotta learn patterns now

Cool! I didn't know you could leave out the ternary operator.

It is not working anymore, bcs it was invalidated by introducing BigInt instead strings before.

Nice! I didn't know about that. Powerful s#*t !

There is no \0 at the end of the input. I know this isn't necessary, as the input is always 3 chars long, but it would be good to conform to most other katas.

Also, this shouldn't cause any katas to be invalidated, so I see no reason not to include it.

select table schema

age_min (minimum of ages)

age_max (maximum of ages)

Because the instructions ask for the aliases being age_min and age_max

why can't we use min_age and max_age for the alias?

And I thought mine was short.. Damn! :D

Nice!

should be top solution :)

Test coverage was fine, random tests were just broken. I made them actually run and now that solution is failed.

Your forumla is correct, but remember that you have two dimensions here.