[hocuspocus]

I'm not a fan of leetcode questions on a whiteboard, and I personally don't ask those. However for an online automated assessment, provided the question is reasonably time-boxed and not too crazy, I think that's fine, on both side of the interviews.

[xtracto]

The questions available at CodeWars page seem the best for me: They are no "gotcha," algorithmic questions (except the higher level ones) and they allow for a good amount of problem solving.

The ones at LeerCode are asinine... oh, you dont remember Dynamic programming? Tough luck. Even if you really wont use it at all.