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Graph Array301 Database212 Hash Table116 String116 Depth-First Search78 Math78 Dynamic Programming76 Sorting64 Tree63 Breadth-First Search53 Greedy52 Binary Search50 Binary Tree48 Two Pointers40 Matrix39 All topics

Premium · 37 results

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TitleSolutionAcceptDifficultyTopics

261. Graph Valid TreeVideoPremium

Solution49.9%Medium

Breadth-First Search, Depth-First Search +2· 9 companies

269. Alien DictionaryVideoPremium

Solution37.1%Hard

Array, Breadth-First Search +4· 18 companies

277. Find the CelebrityVideoPremium

Solution48.9%Medium

Graph, Interactive +1· 12 companies

323. Number of Connected Components in an Undirected GraphVideoPremium

Solution64.9%Medium

Breadth-First Search, Depth-First Search +2· 7 companies

444. Sequence ReconstructionVideoPremium

Solution31.2%Medium

Array, Graph +1· 2 companies

499. The Maze IIIVideoPremium

Solution52.3%Hard

Array, Breadth-First Search +6· 1 company

505. The Maze IIVideoPremium

Solution55.0%Medium

Array, Breadth-First Search +5· 5 companies

631. Design Excel Sum FormulaVideoPremium

–39.3%Hard

Array, Design +3· 9 companies

1059. All Paths from Source Lead to DestinationVideoPremium

Solution37.2%Medium

Graph, Topological Sort· 1 company

1135. Connecting Cities With Minimum CostVideoPremium

Solution63.5%Medium

Graph, Heap (Priority Queue) +2· 1 company

1136. Parallel CoursesVideoPremium

Solution62.1%Medium

Graph, Topological Sort· 7 companies

1168. Optimize Water Distribution in a VillageVideoPremium

Solution65.5%Hard

Graph, Heap (Priority Queue) +2· 2 companies

1245. Tree DiameterVideoPremium

Solution61.1%Medium

Breadth-First Search, Depth-First Search +3· 7 companies

1548. The Most Similar Path in a GraphVideoPremium

Solution59.2%Hard

Dynamic Programming, Graph· 1 company

1724. Checking Existence of Edge Length Limited Paths IIVideoPremium

Solution51.2%Hard

Graph, Minimum Spanning Tree +1· 2 companies

1778. Shortest Path in a Hidden GridVideoPremium

Solution44.5%Medium

Breadth-First Search, Depth-First Search +2· 3 companies

1810. Minimum Path Cost in a Hidden GridVideoPremium

Solution58.7%Medium

Breadth-First Search, Depth-First Search +3· 2 companies

1820. Maximum Number of Accepted InvitationsVideoPremium

Solution52.4%Medium

Array, Depth-First Search +2· 2 companies

2077. Paths in Maze That Lead to Same RoomVideoPremium

Solution56.7%Medium

Graph· 1 company

2093. Minimum Cost to Reach City With DiscountsVideoPremium

Solution62.4%Medium

Graph, Heap (Priority Queue) +1· 2 companies

2123. Minimum Operations to Remove Adjacent Ones in MatrixVideoPremium

Solution42.5%Hard

Array, Graph +1· 1 company

2204. Distance to a Cycle in Undirected GraphVideoPremium

Solution73.4%Hard

Breadth-First Search, Depth-First Search +2· 2 companies

2247. Maximum Cost of Trip With K HighwaysPremium

Solution50.2%Hard

Bit Manipulation, Bitmask +2

2297. Jump Game VIIIVideoPremium

Solution45.5%Medium

Array, Dynamic Programming +4· 1 company

2307. Check for Contradictions in EquationsVideoPremium

Solution43.8%Hard

Array, Depth-First Search +2· 2 companies

2371. Minimize Maximum Value in a GridVideoPremium

Solution70.1%Hard

Array, Graph +4· 1 company

2473. Minimum Cost to Buy ApplesVideoPremium

Solution67.5%Medium

Array, Graph +2· 2 companies

2479. Maximum XOR of Two Non-Overlapping SubtreesPremium

Solution51.3%Hard

Depth-First Search, Graph +2· 2 companies

2714. Find Shortest Path with K HopsVideoPremium

Solution68.7%Hard

Graph, Heap (Priority Queue) +1· 1 company

2737. Find the Closest Marked NodeVideoPremium

Solution65.4%Medium

Array, Graph +2

3383. Minimum Runes to Add to Cast SpellPremium

Solution45.2%Hard

Array, Breadth-First Search +4· 1 company

3385. Minimum Time to Break Locks IIPremium

Solution45.7%Hard

Array, Depth-First Search +1· 1 company

3481. Apply SubstitutionsVideoPremium

Solution78.0%Medium

Array, Breadth-First Search +5· 1 company

3535. Unit Conversion IIVideoPremium

Solution61.5%Medium

Array, Breadth-First Search +3· 1 company

3656. Determine if a Simple Graph ExistsPremium

–47.5%Medium

Array, Binary Search +3

3787. Find Diameter Endpoints of a TreePremium

Solution65.9%Medium

Breadth-First Search, Graph +1· 1 company

3807. Minimum Cost to Repair Edges to Traverse a GraphVideoPremium

Solution55.6%Medium

Binary Search, Breadth-First Search +1

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