Citadel LeetCode Problems

2 most frequently asked LeetCode problems in Citadel technical interviews

Difficulty breakdown: 0 Easy, 1 Medium, 1 Hard

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Problem	DifficultyDiff	Frequency	Tags	Action
Insert Delete GetRandom O(1) 100%	MediumM	100%	ArrayHash Table+3	Solve→
Rank Transform of a Matrix 90%	HardH	90%	ArrayUnion Find+4	Solve→