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Problems

4,005 problems

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Array2,209String870Hash Table786Math682Dynamic Programming666Sorting504Greedy480Binary Search352Depth-First Search335Database303Bit Manipulation283Matrix278Tree261Breadth-First Search255Two Pointers249All topics

With video · 4,005 results

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TitleSolutionAcceptDifficultyTopics
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
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
955. Delete Columns to Make Sorted IIVideo
Solution49.7%Medium
Array, Greedy +1· 3 companies
956. Tallest BillboardVideo
Solution52.0%Hard
Array, Dynamic Programming· 6 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
960. Delete Columns to Make Sorted IIIVideo
Solution72.7%Hard
Array, Dynamic Programming +1· 2 companies
961. N-Repeated Element in Size 2N ArrayVideo
Solution79.9%Easy
Array, Hash Table· 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
964. Least Operators to Express NumberVideo
Solution48.3%Hard
Dynamic Programming, Math +1· 1 company
965. Univalued Binary TreeVideo
Solution73.5%Easy
Binary Tree, Breadth-First Search +2· 3 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
968. Binary Tree CamerasVideo
Solution48.3%Hard
Binary Tree, Depth-First Search +2· 14 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
972. Equal Rational NumbersVideo
Solution47.9%Hard
Math, String· 2 companies
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
975. Odd Even JumpVideo
Solution41.7%Hard
Array, Dynamic Programming +3· 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
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
980. Unique Paths IIIVideo
Solution82.8%Hard
Array, Backtracking +2· 7 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
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
987. Vertical Order Traversal of a Binary TreeVideo
Solution54.6%Hard
Binary Tree, Breadth-First Search +4· 15 companies
988. Smallest String Starting From LeafVideo
Solution61.2%Medium
Backtracking, Binary Tree +3· 2 companies
989. Add to Array-Form of IntegerVideo
Solution45.6%Easy
Array, Math· 4 companies
990. Satisfiability of Equality EquationsVideo
Solution52.2%Medium
Array, Graph +2· 6 companies
991. Broken CalculatorVideo
Solution56.6%Medium
Greedy, Math· 5 companies
992. Subarrays with K Different IntegersVideo
Solution69.0%Hard
Array, Counting +2· 18 companies
993. Cousins in Binary TreeVideo
Solution59.8%Easy
Binary Tree, Breadth-First Search +2· 6 companies
994. Rotting OrangesVideo
Solution59.5%Medium
Array, Breadth-First Search +1· 52 companies
995. Minimum Number of K Consecutive Bit FlipsVideo
Solution62.7%Hard
Array, Bit Manipulation +3· 2 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
998. Maximum Binary Tree IIVideo
Solution70.8%Medium
Binary Tree, Tree· 1 company
Showing 951–1,000 of 4,005