On the array sort…that is clever but it doesn’t return those values to something you can use; it just sorts them on screen. I respect the cleverness, but yeah, not useful.

This is not the reason it isn't useful. The function could just as easily modify an array as print; you could also keep a list (or an atomic integer if that functionality is available) of which have been sorted and spin until it shows that every member has been sorted. Taking n milliseconds to sort an array whose highest element is n, with the cost of all of the thunks, plus the potential for a (very rare) race condition... not so great.

Regardless, I'd hire either of these programmers if there weren't red flags elsewhere.