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Problems

970 problems

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Array447String248Hash Table189Math173Database113Sorting100Simulation93Two Pointers70Counting69Bit Manipulation54Greedy51Matrix41Tree40Depth-First Search39Binary Tree37All topics

Easy · With video · 970 results

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TitleSolutionAcceptDifficultyTopics
824. Goat LatinVideo
Solution69.9%Easy
String· 4 companies
830. Positions of Large GroupsVideo
Solution54.4%Easy
String· 1 company
832. Flipping an ImageVideo
Solution83.6%Easy
Array, Bit Manipulation +3· 6 companies
836. Rectangle OverlapVideo
Solution53.0%Easy
Geometry, Math· 4 companies
844. Backspace String CompareVideo
Solution49.9%Easy
Simulation, Stack +2· 14 companies
859. Buddy StringsVideo
Solution34.0%Easy
Hash Table, String· 5 companies
860. Lemonade ChangeVideo
Solution59.6%Easy
Array, Greedy· 8 companies
867. Transpose MatrixVideo
Solution77.4%Easy
Array, Matrix +1· 7 companies
868. Binary GapVideo
Solution74.2%Easy
Bit Manipulation· 6 companies
872. Leaf-Similar TreesVideo
Solution70.0%Easy
Binary Tree, Depth-First Search +1· 5 companies
876. Middle of the Linked ListVideo
Solution82.3%Easy
Linked List, Two Pointers· 13 companies
883. Projection Area of 3D ShapesVideo
Solution76.9%Easy
Array, Geometry +2· 1 company
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
892. Surface Area of 3D ShapesVideo
Solution71.2%Easy
Array, Geometry +2· 1 company
896. Monotonic ArrayVideo
Solution62.3%Easy
Array· 7 companies
897. Increasing Order Search TreeVideo
Solution79.1%Easy
Binary Search Tree, Binary Tree +3· 2 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
917. Reverse Only LettersVideo
Solution68.9%Easy
String, Two Pointers· 5 companies
922. Sort Array By Parity IIVideo
Solution71.4%Easy
Array, Sorting +1· 6 companies
925. Long Pressed NameVideo
Solution32.8%Easy
String, Two Pointers· 7 companies
929. Unique Email AddressesVideo
Solution67.9%Easy
Array, Hash Table +1· 5 companies
933. Number of Recent CallsVideo
Solution78.9%Easy
Data Stream, Design +1· 9 companies
938. Range Sum of BSTVideo
Solution87.7%Easy
Binary Search Tree, Binary Tree +2· 6 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
965. Univalued Binary TreeVideo
Solution73.5%Easy
Binary Tree, Breadth-First Search +2· 3 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
993. Cousins in Binary TreeVideo
Solution59.8%Easy
Binary Tree, Breadth-First Search +2· 6 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
1009. Complement of Base 10 IntegerVideo
Solution63.3%Easy
Bit Manipulation· 5 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
1021. Remove Outermost ParenthesesVideo
Solution88.3%Easy
Stack, String· 6 companies
1022. Sum of Root To Leaf Binary NumbersVideo
Solution76.6%Easy
Binary Tree, Depth-First Search +1· 6 companies
1025. Divisor GameVideo
Solution72.3%Easy
Brainteaser, Dynamic Programming +2· 7 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
1047. Remove All Adjacent Duplicates In StringVideo
Solution74.2%Easy
Stack, String· 15 companies
Showing 201–250 of 970