1Contains Duplicate IIIHardArraySliding WindowSorting
Solve → 2Meeting Rooms IIMediumArrayTwo PointersGreedy
Solve → 3Reconstruct ItineraryHardArrayStringDepth-First Search
Solve → 4Merge IntervalsMediumArraySorting
Solve → 5Meeting Rooms IIMediumArrayTwo PointersGreedy
Solve → 6Contains Duplicate IIIHardArraySliding WindowSorting
Solve → 7Contains Duplicate IIEasyArrayHash TableSliding Window
Solve → 8Word SearchMediumArrayStringBacktracking
Solve → 10Contains DuplicateEasyArrayHash TableSorting
Solve → 11First Missing PositiveHardArrayHash Table
Solve → 12Top K Frequent ElementsMediumArrayHash TableDivide and Conquer
Solve → 13Word BreakMediumArrayHash TableString
Solve → 14Koko Eating BananasMediumArrayBinary Search
Solve → 15Fruit Into BasketsMediumArrayHash TableSliding Window
Solve → 16Meeting Rooms IIMediumArrayTwo PointersGreedy
Solve → 17Reconstruct ItineraryHardArrayStringDepth-First Search
Solve → 18Contains Duplicate IIIHardArraySliding WindowSorting
Solve → 19Merge IntervalsMediumArraySorting
Solve → 20Contains Duplicate IIEasyArrayHash TableSliding Window
Solve → 21Word SearchMediumArrayStringBacktracking
Solve → 22Contains DuplicateEasyArrayHash TableSorting
Solve → 23First Missing PositiveHardArrayHash Table
Solve → 25Top K Frequent ElementsMediumArrayHash TableDivide and Conquer
Solve → 26Word BreakMediumArrayHash TableString
Solve → 27Koko Eating BananasMediumArrayBinary Search
Solve → 28Fruit Into BasketsMediumArrayHash TableSliding Window
Solve → 29Maximum Length of Repeated SubarrayMediumArrayBinary SearchDynamic Programming
Solve → 30Snapshot ArrayMediumArrayHash TableBinary Search
Solve → 31Find Peak ElementMediumArrayBinary Search
Solve →