Need to know interview basics! DFS/BFS, lots of graph problems, Famous question is implementing a priority queue. Array's and how to optimize solutions, binary search, etc. Binary tree's and how to check them if they're balance, mirror, etc. Make sure you think about the questions and don't focus on a narrow solutions, ask about the edge cases and make sure you understand the statement.
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Make sure you don't use single letter variables. write sudo code if you have to, use oopp's, methods classes, etc. choose python for ease of use during the interview if possible.
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