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Array578 Dynamic Programming332 String191 Math187 Binary Search136 Hash Table134 Sorting106 Greedy104 Bit Manipulation103 Graph96 Depth-First Search91 Heap (Priority Queue)78 Prefix Sum77 Matrix75 Breadth-First Search71 All topics

Hard · 578 results

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TitleSolutionAcceptDifficultyTopics

502. IPOVideo

Solution53.6%Hard

Array, Greedy +2· 9 companies

517. Super Washing MachinesVideo

Solution45.3%Hard

Array, Greedy· 2 companies

527. Word AbbreviationVideoPremium

Solution62.7%Hard

Array, Greedy +3· 4 companies

546. Remove BoxesVideo

Solution49.4%Hard

Array, Dynamic Programming +1· 12 companies

548. Split Array with Equal SumVideoPremium

Solution50.1%Hard

Array, Hash Table +1· 1 company

568. Maximum Vacation DaysVideoPremium

Solution46.7%Hard

Array, Dynamic Programming +1· 3 companies

587. Erect the FenceVideo

Solution53.4%Hard

Array, Geometry +1· 3 companies

630. Course Schedule IIIVideo

Solution42.1%Hard

Array, Greedy +2· 4 companies

631. Design Excel Sum FormulaVideoPremium

–39.3%Hard

Array, Design +3· 9 companies

632. Smallest Range Covering Elements from K ListsVideo

Solution70.3%Hard

Array, Greedy +4· 10 companies

644. Maximum Average Subarray IIVideoPremium

Solution37.7%Hard

Array, Binary Search +1· 1 company

656. Coin PathVideoPremium

Solution34.2%Hard

Array, Dynamic Programming· 1 company

675. Cut Off Trees for Golf EventVideo

Solution36.8%Hard

Array, Breadth-First Search +2· 2 companies

679. 24 GameVideo

Solution59.4%Hard

Array, Backtracking +1· 7 companies

683. K Empty SlotsVideoPremium

Solution38.0%Hard

Array, Binary Indexed Tree +6· 1 company

689. Maximum Sum of 3 Non-Overlapping SubarraysVideo

Solution59.8%Hard

Array, Dynamic Programming· 6 companies

691. Stickers to Spell WordVideo

Solution51.3%Hard

Array, Backtracking +4· 4 companies

699. Falling SquaresVideo

Solution48.9%Hard

Array, Ordered Set +1· 2 companies

710. Random Pick with BlacklistVideo

Solution35.4%Hard

Array, Binary Search +4· 3 companies

719. Find K-th Smallest Pair DistanceVideo

Solution46.4%Hard

Array, Binary Search +2· 5 companies

741. Cherry PickupVideo

Solution40.4%Hard

Array, Dynamic Programming +1· 10 companies

745. Prefix and Suffix SearchVideo

Solution41.2%Hard

Array, Design +3· 3 companies

749. Contain VirusVideo

Solution56.5%Hard

Array, Breadth-First Search +3· 3 companies

757. Set Intersection Size At Least TwoVideo

Solution58.0%Hard

Array, Greedy +1· 6 companies

759. Employee Free TimeVideoPremium

Solution72.9%Hard

Array, Heap (Priority Queue) +1· 12 companies

768. Max Chunks To Make Sorted IIVideo

Solution54.7%Hard

Array, Greedy +3· 5 companies

773. Sliding PuzzleVideo

Solution74.3%Hard

Array, Backtracking +4· 7 companies

774. Minimize Max Distance to Gas StationVideoPremium

Solution53.9%Hard

Array, Binary Search· 2 companies

778. Swim in Rising WaterVideo

Solution68.3%Hard

Array, Binary Search +5· 8 companies

782. Transform to ChessboardVideo

Solution51.9%Hard

Array, Bit Manipulation +2· 2 companies

798. Smallest Rotation with Highest ScoreVideo

Solution54.8%Hard

Array, Prefix Sum· 1 company

801. Minimum Swaps To Make Sequences IncreasingVideo

Solution42.0%Hard

Array, Dynamic Programming· 5 companies

803. Bricks Falling When HitVideo

Solution37.7%Hard

Array, Matrix +1· 3 companies

805. Split Array With Same AverageVideo

Solution27.5%Hard

Array, Bit Manipulation +3· 6 companies

810. Chalkboard XOR GameVideo

Solution67.3%Hard

Array, Bit Manipulation +3· 3 companies

815. Bus RoutesVideo

Solution47.3%Hard

Array, Breadth-First Search +1· 18 companies

827. Making A Large IslandVideo

Solution57.0%Hard

Array, Breadth-First Search +3· 16 companies

839. Similar String GroupsVideo

Solution56.7%Hard

Array, Breadth-First Search +4· 5 companies

843. Guess the WordVideo

Solution36.9%Hard

Array, Game Theory +3· 10 companies

850. Rectangle Area IIVideo

Solution56.7%Hard

Array, Line Sweep +2· 2 companies

857. Minimum Cost to Hire K WorkersVideo

Solution63.5%Hard

Array, Greedy +2· 3 companies

862. Shortest Subarray with Sum at Least KVideo

Solution33.3%Hard

Array, Binary Search +5· 7 companies

864. Shortest Path to Get All KeysVideo

Solution55.0%Hard

Array, Bit Manipulation +2· 7 companies

871. Minimum Number of Refueling StopsVideo

Solution41.8%Hard

Array, Dynamic Programming +2· 7 companies

879. Profitable SchemesVideo

Solution48.7%Hard

Array, Dynamic Programming· 2 companies

891. Sum of Subsequence WidthsVideo

Solution41.1%Hard

902. Numbers At Most N Given Digit SetVideo

Solution45.9%Hard

Array, Binary Search +3· 4 companies

924. Minimize Malware SpreadVideo

Solution43.6%Hard

Array, Breadth-First Search +4· 10 companies

927. Three Equal PartsVideo

Solution41.9%Hard

Array, Math· 2 companies

928. Minimize Malware Spread IIVideo

Solution46.2%Hard

Array, Breadth-First Search +4· 2 companies

Showing 51–100 of 578