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Problems

447 problems

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Array447String249Hash Table190Math173Database113Sorting100Simulation93Counting70Two Pointers70Bit Manipulation54Greedy51Matrix41Tree40Depth-First Search39Binary Tree37All topics

Easy · 447 results

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TitleSolutionAcceptDifficultyTopics
697. Degree of an ArrayVideo
Solution58.8%Easy
Array, Hash Table· 12 companies
704. Binary SearchVideo
Solution61.2%Easy
Array, Binary Search· 11 companies
705. Design HashSetVideo
Solution67.9%Easy
Array, Design +3· 6 companies
706. Design HashMapVideo
Solution66.5%Easy
Array, Design +3· 13 companies
717. 1-bit and 2-bit CharactersVideo
Solution49.5%Easy
Array· 4 companies
724. Find Pivot IndexVideo
Solution64.2%Easy
Array, Prefix Sum· 18 companies
733. Flood FillVideo
Solution68.6%Easy
Array, Breadth-First Search +2· 12 companies
734. Sentence SimilarityVideoPremium
Solution44.5%Easy
Array, Hash Table +1· 1 company
744. Find Smallest Letter Greater Than TargetVideo
Solution59.6%Easy
Array, Binary Search· 7 companies
746. Min Cost Climbing StairsVideo
Solution68.7%Easy
Array, Dynamic Programming· 7 companies
747. Largest Number At Least Twice of OthersVideo
Solution53.4%Easy
Array, Sorting· 4 companies
748. Shortest Completing WordVideo
Solution63.5%Easy
Array, Hash Table +1· 1 company
760. Find Anagram MappingsVideoPremium
Solution83.8%Easy
Array, Hash Table· 1 company
766. Toeplitz MatrixVideo
Solution69.8%Easy
Array, Matrix· 4 companies
804. Unique Morse Code WordsVideo
Solution83.6%Easy
Array, Hash Table +1· 3 companies
806. Number of Lines To Write StringVideo
Solution72.9%Easy
Array, String· 2 companies
812. Largest Triangle AreaVideo
Solution72.1%Easy
Array, Geometry +1· 3 companies
819. Most Common WordVideo
Solution45.0%Easy
Array, Counting +2· 5 companies
821. Shortest Distance to a CharacterVideo
Solution72.7%Easy
Array, String +1· 4 companies
832. Flipping an ImageVideo
Solution83.6%Easy
Array, Bit Manipulation +3· 6 companies
860. Lemonade ChangeVideo
Solution59.6%Easy
Array, Greedy· 8 companies
867. Transpose MatrixVideo
Solution77.4%Easy
Array, Matrix +1· 7 companies
883. Projection Area of 3D ShapesVideo
Solution76.9%Easy
Array, Geometry +2· 1 company
888. Fair Candy SwapVideo
Solution65.9%Easy
Array, Binary Search +2· 6 companies
892. Surface Area of 3D ShapesVideo
Solution71.2%Easy
Array, Geometry +2· 1 company
896. Monotonic ArrayVideo
Solution62.3%Easy
Array· 7 companies
905. Sort Array By ParityVideo
Solution76.2%Easy
Array, Sorting +1· 8 companies
908. Smallest Range IVideo
Solution74.0%Easy
Array, Math· 3 companies
914. X of a Kind in a Deck of CardsVideo
Solution30.4%Easy
Array, Counting +3· 2 companies
922. Sort Array By Parity IIVideo
Solution71.4%Easy
Array, Sorting +1· 6 companies
929. Unique Email AddressesVideo
Solution67.9%Easy
Array, Hash Table +1· 5 companies
941. Valid Mountain ArrayVideo
Solution35.7%Easy
Array· 7 companies
942. DI String MatchVideo
Solution81.0%Easy
Array, Greedy +2· 3 companies
944. Delete Columns to Make SortedVideo
Solution78.1%Easy
Array, String· 4 companies
953. Verifying an Alien DictionaryVideo
Solution55.9%Easy
Array, Hash Table +1· 8 companies
961. N-Repeated Element in Size 2N ArrayVideo
Solution79.9%Easy
Array, Hash Table· 6 companies
976. Largest Perimeter TriangleVideo
Solution62.1%Easy
Array, Greedy +2· 5 companies
977. Squares of a Sorted ArrayVideo
Solution73.7%Easy
Array, Sorting +1· 17 companies
989. Add to Array-Form of IntegerVideo
Solution45.6%Easy
Array, Math· 4 companies
997. Find the Town JudgeVideo
Solution51.2%Easy
Array, Graph +1· 7 companies
999. Available Captures for RookVideo
Solution72.2%Easy
Array, Matrix +1· 2 companies
1002. Find Common CharactersVideo
Solution74.6%Easy
Array, Hash Table +1· 6 companies
1005. Maximize Sum Of Array After K NegationsVideo
Solution54.3%Easy
Array, Greedy +1· 4 companies
1013. Partition Array Into Three Parts With Equal SumVideo
Solution43.2%Easy
Array, Greedy· 5 companies
1018. Binary Prefix Divisible By 5Video
Solution53.5%Easy
Array, Bit Manipulation· 3 companies
1030. Matrix Cells in Distance OrderVideo
Solution74.6%Easy
Array, Geometry +3· 1 company
1037. Valid BoomerangVideo
Solution40.5%Easy
Array, Geometry +1· 2 companies
1046. Last Stone WeightVideo
Solution66.4%Easy
Array, Heap (Priority Queue)· 13 companies
1051. Height CheckerVideo
Solution81.6%Easy
Array, Counting Sort +1· 6 companies
1064. Fixed PointVideoPremium
Solution64.1%Easy
Array, Binary Search· 1 company
Showing 51–100 of 447