In general, study a variety of leetcode questions with different data structures and algorithms (DP, tree traversal, stack, etc). I studied around 40 hours in total. Don't freak out if you do poorly in 1 interview as they'll look at your overall performance. Practice your interpersonal skills too as they'll want to see how you handle team interaction in the behavioral interview.
Phone interview: flat linked list
Describe a project you have done
Tell me about a time when.. 2 questions based on stocks, one casual DP
Was asked a DP on trees question
I declined the interview to work on my startup full time instead.
Search through binary tree and shorten a URL.
NDA: Cannot reveal any specifics.
Signed the NDA
Questions about iterators and generators in python.
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