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Problems

96 problems

Has videoPremium onlyReset
Array578Dynamic Programming332String191Math187Binary Search136Hash Table134Sorting106Greedy104Bit Manipulation103Graph96Depth-First Search91Heap (Priority Queue)78Prefix Sum77Matrix75Breadth-First Search71All topics

Hard · 96 results

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TitleSolutionAcceptDifficultyTopics
269. Alien DictionaryVideoPremium
Solution37.1%Hard
Array, Breadth-First Search +4· 18 companies
329. Longest Increasing Path in a MatrixVideo
Solution57.0%Hard
Array, Breadth-First Search +6· 16 companies
332. Reconstruct ItineraryVideo
Solution45.0%Hard
Depth-First Search, Eulerian Circuit +1· 23 companies
499. The Maze IIIVideoPremium
Solution52.3%Hard
Array, Breadth-First Search +6· 1 company
631. Design Excel Sum FormulaVideoPremium
–39.3%Hard
Array, Design +3· 9 companies
685. Redundant Connection IIVideo
Solution36.6%Hard
Breadth-First Search, Depth-First Search +2· 1 company
753. Cracking the SafeVideo
Solution58.5%Hard
Depth-First Search, Eulerian Circuit +1· 1 company
765. Couples Holding HandsVideo
Solution59.8%Hard
Breadth-First Search, Depth-First Search +3· 5 companies
834. Sum of Distances in TreeVideo
Solution65.8%Hard
Depth-First Search, Dynamic Programming +2· 5 companies
847. Shortest Path Visiting All NodesVideo
Solution66.5%Hard
Bit Manipulation, Bitmask +3· 4 companies
882. Reachable Nodes In Subdivided GraphVideo
Solution52.5%Hard
Graph, Heap (Priority Queue) +1· 2 companies
913. Cat and MouseVideo
Solution36.2%Hard
Dynamic Programming, Game Theory +4· 3 companies
924. Minimize Malware SpreadVideo
Solution43.6%Hard
Array, Breadth-First Search +4· 10 companies
928. Minimize Malware Spread IIVideo
Solution46.2%Hard
Array, Breadth-First Search +4· 2 companies
1168. Optimize Water Distribution in a VillageVideoPremium
Solution65.5%Hard
Graph, Heap (Priority Queue) +2· 2 companies
1192. Critical Connections in a NetworkVideo
Solution60.6%Hard
Biconnected Component, Depth-First Search +1· 8 companies
1203. Sort Items by Groups Respecting DependenciesVideo
Solution66.0%Hard
Breadth-First Search, Depth-First Search +2· 5 companies
1298. Maximum Candies You Can Get from BoxesVideo
Solution67.2%Hard
Array, Breadth-First Search +1· 4 companies
1368. Minimum Cost to Make at Least One Valid Path in a GridVideo
Solution70.9%Hard
Array, Breadth-First Search +4· 8 companies
1377. Frog Position After T SecondsVideo
Solution38.8%Hard
Breadth-First Search, Depth-First Search +2· 2 companies
1489. Find Critical and Pseudo-Critical Edges in Minimum Spanning TreeVideo
Solution66.4%Hard
Graph, Minimum Spanning Tree +3· 4 companies
1494. Parallel Courses IIVideo
Solution31.3%Hard
Bit Manipulation, Bitmask +2· 3 companies
1548. The Most Similar Path in a GraphVideoPremium
Solution59.2%Hard
Dynamic Programming, Graph· 1 company
1579. Remove Max Number of Edges to Keep Graph Fully TraversableVideo
Solution70.1%Hard
Graph, Union Find· 4 companies
1591. Strange Printer IIVideo
Solution61.4%Hard
Array, Graph +2· 1 company
1632. Rank Transform of a MatrixVideo
Solution42.7%Hard
Array, Graph +4· 3 companies
1697. Checking Existence of Edge Length Limited PathsVideo
Solution63.8%Hard
Array, Graph +3· 3 companies
1719. Number Of Ways To Reconstruct A TreeVideo
Solution46.3%Hard
Graph, Tree· 1 company
1724. Checking Existence of Edge Length Limited Paths IIVideoPremium
Solution51.2%Hard
Graph, Minimum Spanning Tree +1· 2 companies
1728. Cat and Mouse IIVideo
Solution40.4%Hard
Array, Dynamic Programming +6· 1 company
1761. Minimum Degree of a Connected Trio in a GraphVideo
Solution44.9%Hard
Graph· 2 companies
1782. Count Pairs Of NodesVideo
Solution43.3%Hard
Array, Binary Search +3· 1 company
1857. Largest Color Value in a Directed GraphVideo
Solution57.3%Hard
Counting, Dynamic Programming +4· 5 companies
1916. Count Ways to Build Rooms in an Ant ColonyVideo
Solution52.4%Hard
Combinatorics, Dynamic Programming +4· 1 company
1928. Minimum Cost to Reach Destination in TimeVideo
Solution42.6%Hard
Array, Dynamic Programming +1· 6 companies
2045. Second Minimum Time to Reach DestinationVideo
Solution62.3%Hard
Breadth-First Search, Graph +1· 1 company
2050. Parallel Courses IIIVideo
Solution67.0%Hard
Array, Dynamic Programming +2· 9 companies
2065. Maximum Path Quality of a GraphVideo
Solution63.1%Hard
Array, Backtracking +1· 5 companies
2076. Process Restricted Friend RequestsVideo
Solution61.7%Hard
Graph, Union Find· 2 companies
2092. Find All People With SecretVideo
Solution48.4%Hard
Breadth-First Search, Depth-First Search +3· 3 companies
2097. Valid Arrangement of PairsVideo
–66.5%Hard
Depth-First Search, Eulerian Circuit +1· 3 companies
2123. Minimum Operations to Remove Adjacent Ones in MatrixVideoPremium
Solution42.5%Hard
Array, Graph +1· 1 company
2127. Maximum Employees to Be Invited to a MeetingVideo
Solution61.8%Hard
Depth-First Search, Graph +1· 5 companies
2203. Minimum Weighted Subgraph With the Required PathsVideo
Solution43.8%Hard
Graph, Shortest Path· 1 company
2204. Distance to a Cycle in Undirected GraphVideoPremium
Solution73.4%Hard
Breadth-First Search, Depth-First Search +2· 2 companies
2242. Maximum Score of a Node SequenceVideo
Solution40.5%Hard
Array, Enumeration +2· 1 company
2246. Longest Path With Different Adjacent CharactersVideo
Solution54.2%Hard
Array, Depth-First Search +4· 5 companies
2247. Maximum Cost of Trip With K HighwaysPremium
Solution50.2%Hard
Bit Manipulation, Bitmask +2
2290. Minimum Obstacle Removal to Reach CornerVideo
Solution71.1%Hard
Array, Breadth-First Search +4· 2 companies
2307. Check for Contradictions in EquationsVideoPremium
Solution43.8%Hard
Array, Depth-First Search +2· 2 companies
Showing 1–50 of 96