I think (hope?) you're getting downvoted because most folks aren't arguing against giving someone fizzbuzz or seeing if they can loop through a tree, it's the f

I think (hope?) you're getting downvoted because most folks aren't arguing against giving someone fizzbuzz or seeing if they can loop through a tree, it's the fact that some of these tests gives you what is an obviously O^3 algorithm and you have to use some non trivial trick to get it to O^2 or something.