CTCI-style questions on a whiteboard without any interaction from the interviewer is definitely a big red flag. Most of our whiteboard questions are solvable wi

CTCI-style questions on a whiteboard without any interaction from the interviewer is definitely a big red flag. Most of our whiteboard questions are solvable with simple if-statements, loops, and basic data structures; boxes and arrows are also appropriate if you communicate what's being abstracted away.