Problem
Optimize an O(N^2) algorithm to O(N) or O(N log N) using advanced data structures.
Practicing as: Software Engineer interview at Citadel SecuritiesHi, I'll play your Citadel Securities interviewer for the Software Engineer role. Candidates describe these interviews as mixed and hard, so expect me to be structured and detail-hungry. Take your time with the question above and answer like we're in the room.
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