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Problems

132 problems

Has videoPremium onlyReset
DesignArray2,209String870Hash Table786Math682Dynamic Programming666Sorting504Greedy480Binary Search352Depth-First Search335Database303Bit Manipulation283Matrix278Tree261Breadth-First Search255Two Pointers249All topics

With video · 132 results

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TitleSolutionAcceptDifficultyTopics
715. Range ModuleVideo
Solution45.4%Hard
Design, Ordered Set +1· 5 companies
716. Max StackVideoPremium
Solution45.9%Hard
Design, Doubly-Linked List +3· 10 companies
729. My Calendar IVideo
Solution58.4%Medium
Array, Binary Search +3· 12 companies
731. My Calendar IIVideo
Solution63.3%Medium
Array, Binary Search +4· 3 companies
732. My Calendar IIIVideo
Solution72.4%Hard
Binary Search, Design +3· 1 company
745. Prefix and Suffix SearchVideo
Solution41.2%Hard
Array, Design +3· 3 companies
855. Exam RoomVideo
Solution43.6%Medium
Design, Heap (Priority Queue) +1· 6 companies
895. Maximum Frequency StackVideo
Solution67.1%Hard
Design, Hash Table +2· 12 companies
900. RLE IteratorVideo
Solution59.6%Medium
Array, Counting +2· 2 companies
901. Online Stock SpanVideo
Solution69.5%Medium
Data Stream, Design +2· 7 companies
911. Online ElectionVideo
Solution52.8%Medium
Array, Binary Search +2· 3 companies
919. Complete Binary Tree InserterVideo
Solution65.0%Medium
Binary Tree, Breadth-First Search +2· 3 companies
933. Number of Recent CallsVideo
Solution78.9%Easy
Data Stream, Design +1· 9 companies
981. Time Based Key-Value StoreVideo
Solution49.8%Medium
Binary Search, Design +2· 34 companies
1032. Stream of CharactersVideo
Solution52.8%Hard
Array, Data Stream +3· 4 companies
1146. Snapshot ArrayVideo
Solution36.8%Medium
Array, Binary Search +2· 20 companies
1157. Online Majority Element In SubarrayVideo
Solution40.9%Hard
Array, Binary Indexed Tree +3· 1 company
1166. Design File SystemVideoPremium
Solution65.1%Medium
Design, Hash Table +2· 12 companies
1172. Dinner Plate StacksVideo
Solution34.2%Hard
Design, Hash Table +2· 2 companies
1206. Design SkiplistVideo
Solution59.7%Hard
Design, Linked List· 8 companies
1244. Design A LeaderboardVideoPremium
Solution67.9%Medium
Design, Hash Table +1· 9 companies
1261. Find Elements in a Contaminated Binary TreeVideo
Solution84.1%Medium
Binary Tree, Breadth-First Search +4· 2 companies
1286. Iterator for CombinationVideo
Solution72.7%Medium
Backtracking, Design +2· 1 company
1348. Tweet Counts Per FrequencyVideo
Solution46.6%Medium
Binary Search, Design +3· 4 companies
1352. Product of the Last K NumbersVideo
Solution62.9%Medium
Array, Data Stream +3· 11 companies
1357. Apply Discount Every n OrdersVideo
Solution66.1%Medium
Array, Design +1· 1 company
1381. Design a Stack With Increment OperationVideo
Solution79.9%Medium
Array, Design +1· 6 companies
1396. Design Underground SystemVideo
Solution74.8%Medium
Design, Hash Table +1· 7 companies
1429. First Unique NumberVideoPremium
Solution57.8%Medium
Array, Data Stream +3· 5 companies
1472. Design Browser HistoryVideo
Solution78.3%Medium
Array, Data Stream +4· 13 companies
1476. Subrectangle QueriesVideo
Solution86.3%Medium
Array, Design +1· 3 companies
1483. Kth Ancestor of a Tree NodeVideo
Solution39.7%Hard
Binary Search, Breadth-First Search +4· 3 companies
1500. Design a File Sharing SystemVideoPremium
Solution41.7%Medium
Data Stream, Design +3· 1 company
1570. Dot Product of Two Sparse VectorsVideoPremium
Solution89.9%Medium
Array, Design +2· 12 companies
1586. Binary Search Tree Iterator IIVideoPremium
Solution63.4%Medium
Binary Search Tree, Binary Tree +4· 1 company
1600. Throne InheritanceVideo
Solution68.2%Medium
Depth-First Search, Design +2· 2 companies
1603. Design Parking SystemVideo
Solution87.2%Easy
Counting, Design +1· 6 companies
1622. Fancy SequenceVideo
Solution41.3%Hard
Design, Math +1· 3 companies
1628. Design an Expression Tree With Evaluate FunctionVideoPremium
Solution82.4%Medium
Array, Binary Tree +4· 1 company
1656. Design an Ordered StreamVideo
Solution82.6%Easy
Array, Data Stream +2· 3 companies
1670. Design Front Middle Back QueueVideo
Solution59.1%Medium
Array, Data Stream +3· 3 companies
1756. Design Most Recently Used QueueVideoPremium
Solution78.0%Medium
Array, Binary Indexed Tree +4· 2 companies
1797. Design Authentication ManagerVideo
Solution58.5%Medium
Design, Doubly-Linked List +2· 11 companies
1804. Implement Trie II (Prefix Tree)VideoPremium
Solution63.6%Medium
Design, Hash Table +2· 2 companies
1825. Finding MK AverageVideo
Solution38.7%Hard
Data Stream, Design +3· 1 company
1845. Seat Reservation ManagerVideo
Solution67.1%Medium
Design, Heap (Priority Queue)· 4 companies
1865. Finding Pairs With a Certain SumVideo
Solution61.6%Medium
Array, Design +1· 8 companies
1912. Design Movie Rental SystemVideo
Solution62.5%Hard
Array, Design +3· 2 companies
1993. Operations on TreeVideo
Solution46.3%Medium
Array, Breadth-First Search +4· 3 companies
2013. Detect SquaresVideo
Solution53.0%Medium
Array, Counting +2· 4 companies
Showing 51–100 of 132