hmm interesting... i haven't done a technical interview in 15 years so i just tried fizzbuzz (leetcode was the first thing that popped up on google)... took me about 15 minutes. i was caught a bit off guard, there are a couple of little subtle gotchas that require some actual thought. i'd say it's a pretty good test without requiring knowledge of data structures or CS level algorithms.

that said i would only want to do it on a terminal, not on a whiteboard. i'd probably fuck that up somehow.