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Confluent LeetCode Questions 2026

Browse LeetCode problems frequently asked by Confluent. Filter by difficulty and timeframe to focus your interview prep.

Last updated: 10 July 2026

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ProblemDifficultyFrequencyTopics
LRU CacheMEDIUM
87.5%
Hash TableLinked ListDesignDoubly-Linked List
Valid SudokuMEDIUM
100%
ArrayHash TableMatrix
Sudoku SolverHARD
100%
ArrayHash TableBacktrackingMatrix
DebounceMEDIUM
62.5%
Minimum Time to Eat All GrainsHARD
87.5%
ArrayTwo PointersBinary SearchSorting
Time Based Key-Value StoreMEDIUM
100%
Hash TableStringBinary SearchDesign
Design Authentication ManagerMEDIUM
87.5%
Hash TableLinked ListDesignDoubly-Linked List
Combination SumMEDIUM
75%
ArrayBacktracking
Cache With Time LimitMEDIUM
62.5%

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