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Problems

797 problems

Has videoPremium onlyReset
Array2,237String877Hash Table797Math691Dynamic Programming673Sorting508Greedy485Binary Search357Depth-First Search338Database308Bit Manipulation286Matrix279Tree264Breadth-First Search257Prefix Sum252All topics

797 results

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TitleSolutionAcceptDifficultyTopics
811. Subdomain Visit CountVideo
Solution77.2%Medium
Array, Counting +2· 4 companies
815. Bus RoutesVideo
Solution47.3%Hard
Array, Breadth-First Search +1· 18 companies
817. Linked List ComponentsVideo
Solution58.4%Medium
Array, Hash Table +1· 4 companies
819. Most Common WordVideo
Solution45.0%Easy
Array, Counting +2· 5 companies
820. Short Encoding of WordsVideo
Solution61.0%Medium
Array, Hash Table +2· 1 company
822. Card Flipping GameVideo
Solution51.3%Medium
Array, Hash Table· 1 company
823. Binary Trees With FactorsVideo
Solution52.9%Medium
Array, Dynamic Programming +2· 2 companies
828. Count Unique Characters of All Substrings of a Given StringVideo
Solution54.1%Hard
Dynamic Programming, Hash Table +1· 3 companies
833. Find And Replace in StringVideo
Solution50.9%Medium
Array, Hash Table +2· 2 companies
839. Similar String GroupsVideo
Solution56.7%Hard
Array, Breadth-First Search +4· 5 companies
840. Magic Squares In GridVideo
Solution55.1%Medium
Array, Hash Table +2· 5 companies
846. Hand of StraightsVideo
Solution58.5%Medium
Array, Greedy +2· 6 companies
859. Buddy StringsVideo
Solution34.0%Easy
Hash Table, String· 5 companies
863. All Nodes Distance K in Binary TreeVideo
Solution68.1%Medium
Binary Tree, Breadth-First Search +3· 16 companies
865. Smallest Subtree with all the Deepest NodesVideo
Solution77.5%Medium
Binary Tree, Breadth-First Search +3· 4 companies
869. Reordered Power of 2Video
Solution66.0%Medium
Counting, Enumeration +3· 5 companies
873. Length of Longest Fibonacci SubsequenceVideo
Solution57.5%Medium
Array, Dynamic Programming +1· 7 companies
874. Walking Robot SimulationVideo
Solution64.5%Medium
Array, Hash Table +1· 7 companies
884. Uncommon Words from Two SentencesVideo
Solution75.8%Easy
Counting, Hash Table +1· 2 companies
888. Fair Candy SwapVideo
Solution65.9%Easy
Array, Binary Search +2· 6 companies
889. Construct Binary Tree from Preorder and Postorder TraversalVideo
Solution78.0%Medium
Array, Binary Tree +3· 6 companies
890. Find and Replace PatternVideo
Solution76.8%Medium
Array, Hash Table +1· 2 companies
893. Groups of Special-Equivalent StringsVideo
Solution73.5%Medium
Array, Hash Table +2· 1 company
895. Maximum Frequency StackVideo
Solution67.1%Hard
Design, Hash Table +2· 12 companies
904. Fruit Into BasketsVideo
Solution52.5%Medium
Array, Hash Table +1· 11 companies
911. Online ElectionVideo
Solution52.8%Medium
Array, Binary Search +2· 3 companies
914. X of a Kind in a Deck of CardsVideo
Solution30.4%Easy
Array, Counting +3· 2 companies
916. Word SubsetsVideo
Solution55.9%Medium
Array, Hash Table +1· 6 companies
923. 3Sum With MultiplicityVideo
Solution46.2%Medium
Array, Counting +3· 4 companies
924. Minimize Malware SpreadVideo
Solution43.6%Hard
Array, Breadth-First Search +4· 10 companies
928. Minimize Malware Spread IIVideo
Solution46.2%Hard
Array, Breadth-First Search +4· 2 companies
929. Unique Email AddressesVideo
Solution67.9%Easy
Array, Hash Table +1· 5 companies
930. Binary Subarrays With SumVideo
Solution69.7%Medium
Array, Hash Table +2· 7 companies
939. Minimum Area RectangleVideo
Solution55.4%Medium
Array, Geometry +3· 8 companies
947. Most Stones Removed with Same Row or ColumnVideo
Solution63.4%Medium
Depth-First Search, Graph +2· 10 companies
952. Largest Component Size by Common FactorVideo
Solution43.8%Hard
Array, Hash Table +3· 2 companies
953. Verifying an Alien DictionaryVideo
Solution55.9%Easy
Array, Hash Table +1· 8 companies
954. Array of Doubled PairsVideo
Solution39.7%Medium
Array, Greedy +2· 1 company
957. Prison Cells After N DaysVideo
Solution39.0%Medium
Array, Bit Manipulation +2· 1 company
959. Regions Cut By SlashesVideo
Solution77.8%Medium
Array, Breadth-First Search +4· 6 companies
961. N-Repeated Element in Size 2N ArrayVideo
Solution79.9%Easy
Array, Hash Table· 6 companies
966. Vowel SpellcheckerVideo
Solution61.4%Medium
Array, Hash Table +1· 7 companies
970. Powerful IntegersVideo
Solution44.5%Medium
Enumeration, Hash Table +1
974. Subarray Sums Divisible by KVideo
Solution56.7%Medium
Array, Hash Table +1· 11 companies
981. Time Based Key-Value StoreVideo
Solution49.8%Medium
Binary Search, Design +2· 34 companies
982. Triples with Bitwise AND Equal To ZeroVideo
Solution60.7%Hard
Array, Bit Manipulation +1· 2 companies
987. Vertical Order Traversal of a Binary TreeVideo
Solution54.6%Hard
Binary Tree, Breadth-First Search +4· 15 companies
992. Subarrays with K Different IntegersVideo
Solution69.0%Hard
Array, Counting +2· 18 companies
996. Number of Squareful ArraysVideo
Solution51.9%Hard
Array, Backtracking +5· 2 companies
997. Find the Town JudgeVideo
Solution51.2%Easy
Array, Graph +1· 7 companies
Showing 151–200 of 797