1Reorganize StringMediumHash TableStringGreedy
Solve → 2Letter Combinations of a Phone NumberMediumHash TableStringBacktracking
Solve → 3Using a Robot to Print the Lexicographically Smallest StringMediumHash TableStringStack
Solve → 4Minimum Number of Pushes to Type Word IIMediumHash TableStringGreedy
Solve → 5LRU CacheMediumHash TableLinked ListDesign
Solve → 6Minimum Deletions to Make String K-SpecialMediumHash TableStringGreedy
Solve → 7Number of Substrings Containing All Three CharactersMediumHash TableStringSliding Window
Solve → 8Longest Substring Without Repeating CharactersMediumHash TableStringSliding Window
Solve → 9Design A LeaderboardMediumHash TableDesignSorting
Solve → 10Reorganize StringMediumHash TableStringGreedy
Solve → 11Letter Combinations of a Phone NumberMediumHash TableStringBacktracking
Solve → 12Minimum Deletions to Make String K-SpecialMediumHash TableStringGreedy
Solve → 13Number of Substrings Containing All Three CharactersMediumHash TableStringSliding Window
Solve → 14Using a Robot to Print the Lexicographically Smallest StringMediumHash TableStringStack
Solve → 15Reorganize StringMediumHash TableStringGreedy
Solve → 16Minimum Number of Pushes to Type Word IIMediumHash TableStringGreedy
Solve → 17LRU CacheMediumHash TableLinked ListDesign
Solve → 18Design A LeaderboardMediumHash TableDesignSorting
Solve → 19Longest Substring Without Repeating CharactersMediumHash TableStringSliding Window
Solve →