1LFU CacheHardHash TableLinked ListDesign
Solve → 2Number of Distinct IslandsMediumHash TableDepth-First SearchBreadth-First Search
Solve → 3LRU CacheMediumHash TableLinked ListDesign
Solve → 4Longest Substring Without Repeating CharactersMediumHash TableStringSliding Window
Solve → 5Design In-Memory File SystemHardHash TableStringDesign
Solve → 6LFU CacheHardHash TableLinked ListDesign
Solve → 7LRU CacheMediumHash TableLinked ListDesign
Solve → 8Design In-Memory File SystemHardHash TableStringDesign
Solve → 9Design TwitterMediumHash TableLinked ListDesign
Solve → 10Longest Substring with At Most K Distinct CharactersMediumHash TableStringSliding Window
Solve → 11Number of AtomsHardHash TableStringStack
Solve → 12Longest Substring Without Repeating CharactersMediumHash TableStringSliding Window
Solve → 13Number of Distinct IslandsMediumHash TableDepth-First SearchBreadth-First Search
Solve → 14Longest Substring with At Most K Distinct CharactersMediumHash TableStringSliding Window
Solve → 15LFU CacheHardHash TableLinked ListDesign
Solve → 16LRU CacheMediumHash TableLinked ListDesign
Solve → 17Design In-Memory File SystemHardHash TableStringDesign
Solve → 18Design TwitterMediumHash TableLinked ListDesign
Solve → 19Longest Substring Without Repeating CharactersMediumHash TableStringSliding Window
Solve → 20Number of Distinct IslandsMediumHash TableDepth-First SearchBreadth-First Search
Solve → 21Reorganize StringMediumHash TableStringGreedy
Solve → 22Number of AtomsHardHash TableStringStack
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