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Problems

2,133 problems

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Array1,212Hash Table473String437Math331Greedy330Dynamic Programming327Sorting302Depth-First Search208Binary Search189Breadth-First Search166Matrix163Tree158Prefix Sum155Two Pointers150Database137All topics

Medium · 2,133 results

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TitleSolutionAcceptDifficultyTopics
900. RLE IteratorVideo
Solution59.6%Medium
Array, Counting +2· 2 companies
901. Online Stock SpanVideo
Solution69.5%Medium
Data Stream, Design +2· 7 companies
904. Fruit Into BasketsVideo
Solution52.5%Medium
Array, Hash Table +1· 11 companies
907. Sum of Subarray MinimumsVideo
Solution39.0%Medium
Array, Dynamic Programming +2· 13 companies
909. Snakes and LaddersVideo
Solution48.0%Medium
Array, Breadth-First Search +1· 12 companies
910. Smallest Range IIVideo
Solution38.4%Medium
Array, Greedy +2· 3 companies
911. Online ElectionVideo
Solution52.8%Medium
Array, Binary Search +2· 3 companies
912. Sort an ArrayVideo
Solution55.9%Medium
Array, Bucket Sort +6· 12 companies
915. Partition Array into Disjoint IntervalsVideo
Solution49.4%Medium
Array· 2 companies
916. Word SubsetsVideo
Solution55.9%Medium
Array, Hash Table +1· 6 companies
918. Maximum Sum Circular SubarrayVideo
Solution51.5%Medium
Array, Divide and Conquer +3· 12 companies
919. Complete Binary Tree InserterVideo
Solution65.0%Medium
Binary Tree, Breadth-First Search +2· 3 companies
921. Minimum Add to Make Parentheses ValidVideo
Solution74.7%Medium
Greedy, Stack +1· 7 companies
923. 3Sum With MultiplicityVideo
Solution46.2%Medium
Array, Counting +3· 4 companies
926. Flip String to Monotone IncreasingVideo
Solution61.5%Medium
Dynamic Programming, String· 5 companies
930. Binary Subarrays With SumVideo
Solution69.7%Medium
Array, Hash Table +2· 7 companies
931. Minimum Falling Path SumVideo
Solution60.8%Medium
Array, Dynamic Programming +1· 8 companies
932. Beautiful ArrayVideo
Solution70.7%Medium
Array, Divide and Conquer +1· 4 companies
934. Shortest BridgeVideo
Solution59.9%Medium
Array, Breadth-First Search +2· 16 companies
935. Knight DialerVideo
Solution61.8%Medium
Dynamic Programming· 6 companies
937. Reorder Data in Log FilesVideo
Solution56.6%Medium
Array, Sorting +1· 4 companies
939. Minimum Area RectangleVideo
Solution55.4%Medium
Array, Geometry +3· 8 companies
945. Minimum Increment to Make Array UniqueVideo
Solution60.7%Medium
Array, Counting +2· 7 companies
946. Validate Stack SequencesVideo
Solution70.8%Medium
Array, Simulation +1· 6 companies
947. Most Stones Removed with Same Row or ColumnVideo
Solution63.4%Medium
Depth-First Search, Graph +2· 10 companies
948. Bag of TokensVideo
Solution59.5%Medium
Array, Greedy +2· 4 companies
949. Largest Time for Given DigitsVideo
Solution36.0%Medium
Array, Enumeration +1· 3 companies
950. Reveal Cards In Increasing OrderVideo
Solution83.6%Medium
Array, Queue +2· 4 companies
951. Flip Equivalent Binary TreesVideo
Solution69.8%Medium
Binary Tree, Depth-First Search +1· 4 companies
954. Array of Doubled PairsVideo
Solution39.7%Medium
Array, Greedy +2· 1 company
955. Delete Columns to Make Sorted IIVideo
Solution49.7%Medium
Array, Greedy +1· 3 companies
957. Prison Cells After N DaysVideo
Solution39.0%Medium
Array, Bit Manipulation +2· 1 company
958. Check Completeness of a Binary TreeVideo
Solution59.6%Medium
Binary Tree, Breadth-First Search +1· 5 companies
959. Regions Cut By SlashesVideo
Solution77.8%Medium
Array, Breadth-First Search +4· 6 companies
962. Maximum Width RampVideo
Solution56.0%Medium
Array, Monotonic Stack +1· 8 companies
963. Minimum Area Rectangle IIVideo
Solution55.9%Medium
Array, Geometry +1· 2 companies
966. Vowel SpellcheckerVideo
Solution61.4%Medium
Array, Hash Table +1· 7 companies
967. Numbers With Same Consecutive DifferencesVideo
Solution59.1%Medium
Backtracking, Breadth-First Search· 5 companies
969. Pancake SortingVideo
Solution71.7%Medium
Array, Greedy +2· 3 companies
970. Powerful IntegersVideo
Solution44.5%Medium
Enumeration, Hash Table +1
971. Flip Binary Tree To Match Preorder TraversalVideo
Solution51.9%Medium
Binary Tree, Depth-First Search +1
973. K Closest Points to OriginVideo
Solution69.4%Medium
Array, Divide and Conquer +5· 17 companies
974. Subarray Sums Divisible by KVideo
Solution56.7%Medium
Array, Hash Table +1· 11 companies
978. Longest Turbulent SubarrayVideo
Solution49.6%Medium
Array, Dynamic Programming +1· 3 companies
979. Distribute Coins in Binary TreeVideo
Solution77.2%Medium
Binary Tree, Depth-First Search +1· 8 companies
981. Time Based Key-Value StoreVideo
Solution49.8%Medium
Binary Search, Design +2· 34 companies
983. Minimum Cost For TicketsVideo
Solution67.4%Medium
Array, Dynamic Programming· 12 companies
984. String Without AAA or BBBVideo
Solution45.6%Medium
Greedy, String· 3 companies
985. Sum of Even Numbers After QueriesVideo
Solution68.8%Medium
Array, Simulation· 1 company
986. Interval List IntersectionsVideo
Solution73.0%Medium
Array, Two Pointers· 12 companies
Showing 501–550 of 2,133