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Problems

4,005 problems

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

With video · 4,005 results

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TitleSolutionAcceptDifficultyTopics
551. Student Attendance Record IVideo
Solution50.1%Easy
String· 3 companies
552. Student Attendance Record IIVideo
Solution57.1%Hard
Dynamic Programming· 3 companies
553. Optimal DivisionVideo
Solution64.0%Medium
Array, Dynamic Programming +1· 1 company
554. Brick WallVideo
Solution56.1%Medium
Array, Hash Table· 5 companies
555. Split Concatenated StringsVideoPremium
Solution43.4%Medium
Array, Greedy +1· 1 company
556. Next Greater Element IIIVideo
Solution35.2%Medium
Math, String +1· 11 companies
557. Reverse Words in a String IIIVideo
Solution84.0%Easy
String, Two Pointers· 7 companies
558. Logical OR of Two Binary Grids Represented as Quad-TreesVideo
Solution53.9%Medium
Divide and Conquer, Tree
559. Maximum Depth of N-ary TreeVideo
Solution73.5%Easy
Breadth-First Search, Depth-First Search +1· 2 companies
560. Subarray Sum Equals KVideo
Solution48.2%Medium
Array, Hash Table +1· 47 companies
561. Array PartitionVideo
Solution82.2%Easy
Array, Counting Sort +2· 5 companies
562. Longest Line of Consecutive One in MatrixVideoPremium
Solution50.5%Medium
Array, Dynamic Programming +1· 1 company
563. Binary Tree TiltVideo
Solution66.2%Easy
Binary Tree, Depth-First Search +1· 3 companies
564. Find the Closest PalindromeVideo
Solution32.2%Hard
Math, String· 8 companies
565. Array NestingVideo
Solution56.6%Medium
Array, Depth-First Search· 3 companies
566. Reshape the MatrixVideo
Solution65.4%Easy
Array, Matrix +1· 5 companies
567. Permutation in StringVideo
Solution49.8%Medium
Hash Table, Sliding Window +2· 16 companies
568. Maximum Vacation DaysVideoPremium
Solution46.7%Hard
Array, Dynamic Programming +1· 3 companies
569. Median Employee SalaryVideoPremium
Solution65.9%Hard
Database· 2 companies
570. Managers with at Least 5 Direct ReportsVideo
Solution49.4%Medium
Database· 8 companies
571. Find Median Given Frequency of NumbersVideoPremium
Solution42.4%Hard
Database· 1 company
572. Subtree of Another TreeVideo
Solution52.0%Easy
Binary Tree, Depth-First Search +3· 8 companies
573. Squirrel SimulationVideoPremium
Solution57.1%Medium
Array, Math· 1 company
574. Winning CandidateVideoPremium
Solution62.8%Medium
Database
575. Distribute CandiesVideo
Solution71.5%Easy
Array, Hash Table· 3 companies
576. Out of Boundary PathsVideo
Solution48.1%Medium
Dynamic Programming· 3 companies
577. Employee BonusVideo
Solution78.3%Easy
Database· 7 companies
578. Get Highest Answer Rate QuestionVideoPremium
Solution40.2%Medium
Database· 1 company
579. Find Cumulative Salary of an EmployeeVideoPremium
Solution49.6%Hard
Database· 1 company
580. Count Student Number in DepartmentsVideoPremium
Solution60.1%Medium
Database· 1 company
581. Shortest Unsorted Continuous SubarrayVideo
Solution38.7%Medium
Array, Greedy +4· 9 companies
582. Kill ProcessVideoPremium
Solution70.4%Medium
Array, Breadth-First Search +3· 4 companies
583. Delete Operation for Two StringsVideo
Solution66.0%Medium
Dynamic Programming, String· 4 companies
584. Find Customer RefereeVideo
Solution73.7%Easy
Database· 7 companies
585. Investments in 2016Video
Solution52.1%Medium
Database· 6 companies
586. Customer Placing the Largest Number of OrdersVideo
Solution64.6%Easy
Database· 4 companies
587. Erect the FenceVideo
Solution53.4%Hard
Array, Geometry +1· 3 companies
588. Design In-Memory File SystemVideoPremium
Solution48.0%Hard
Design, Hash Table +3· 16 companies
589. N-ary Tree Preorder TraversalVideo
Solution76.7%Easy
Depth-First Search, Stack +1· 2 companies
590. N-ary Tree Postorder TraversalVideo
Solution81.0%Easy
Depth-First Search, Stack +1· 3 companies
591. Tag ValidatorVideo
Solution41.7%Hard
Stack, String· 2 companies
592. Fraction Addition and SubtractionVideo
Solution66.6%Medium
Math, Simulation +1· 5 companies
593. Valid SquareVideo
Solution45.5%Medium
Geometry, Math· 3 companies
594. Longest Harmonious SubsequenceVideo
Solution65.1%Easy
Array, Counting +3· 7 companies
595. Big CountriesVideo
Solution69.0%Easy
Database· 5 companies
596. Classes More Than 5 StudentsVideo
Solution58.4%Easy
Database
596. Classes With at Least 5 StudentsVideo
Solution65.2%Easy
Database· 3 companies
597. Friend Requests I: Overall Acceptance RateVideoPremium
Solution41.0%Easy
Database· 1 company
598. Range Addition IIVideo
Solution59.1%Easy
Array, Math· 3 companies
599. Minimum Index Sum of Two ListsVideo
Solution60.8%Easy
Array, Hash Table +1· 4 companies
Showing 551–600 of 4,005