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208 problems

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Array1,212 Hash Table473 String437 Math331 Greedy330 Dynamic Programming327 Sorting302 Depth-First Search208 Binary Search189 Breadth-First Search166 Matrix163 Tree158 Prefix Sum155 Two Pointers150 Database137 All topics

Medium · 208 results

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TitleSolutionAcceptDifficultyTopics

1740. Find Distance in a Binary TreeVideoPremium

Solution74.3%Medium

Binary Tree, Breadth-First Search +3· 2 companies

1743. Restore the Array From Adjacent PairsVideo

Solution74.7%Medium

Array, Depth-First Search +1· 9 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

1858. Longest Word With All PrefixesVideoPremium

Solution73.1%Medium

Depth-First Search, Trie· 1 company

1905. Count Sub IslandsVideo

Solution72.8%Medium

Array, Breadth-First Search +3· 5 companies

1973. Count Nodes Equal to Sum of DescendantsVideoPremium

Solution77.4%Medium

Binary Tree, Depth-First Search +1· 1 company

1992. Find All Groups of FarmlandVideo

Solution75.6%Medium

Array, Breadth-First Search +2· 2 companies

1993. Operations on TreeVideo

Solution46.3%Medium

Array, Breadth-First Search +4· 3 companies

2049. Count Nodes With the Highest ScoreVideo

Solution52.6%Medium

Array, Binary Tree +2· 3 companies

2096. Step-By-Step Directions From a Binary Tree Node to AnotherVideo

Solution56.3%Medium

Binary Tree, Depth-First Search +2· 6 companies

2101. Detonate the Maximum BombsVideo

Solution50.0%Medium

Array, Breadth-First Search +4· 7 companies

2192. All Ancestors of a Node in a Directed Acyclic GraphVideo

Solution62.1%Medium

Breadth-First Search, Depth-First Search +2· 4 companies

2265. Count Nodes Equal to Average of SubtreeVideo

Solution88.6%Medium

Binary Tree, Depth-First Search +1· 4 companies

2316. Count Unreachable Pairs of Nodes in an Undirected GraphVideo

Solution49.9%Medium

Breadth-First Search, Depth-First Search +2· 4 companies

2359. Find Closest Node to Given Two NodesVideo

Solution53.0%Medium

Depth-First Search, Graph· 4 companies

2368. Reachable Nodes With RestrictionsVideo

Solution60.8%Medium

Array, Breadth-First Search +5· 2 companies

2378. Choose Edges to Maximize Score in a TreeVideoPremium

Solution57.1%Medium

Depth-First Search, Dynamic Programming +1· 1 company

2385. Amount of Time for Binary Tree to Be InfectedVideo

Solution65.8%Medium

Binary Tree, Breadth-First Search +3· 12 companies

2415. Reverse Odd Levels of Binary TreeVideo

Solution86.7%Medium

Binary Tree, Breadth-First Search +2· 3 companies

2445. Number of Nodes With Value OneVideoPremium

Solution66.3%Medium

Binary Tree, Breadth-First Search +2· 1 company

2467. Most Profitable Path in a TreeVideo

Solution67.3%Medium

Array, Breadth-First Search +3· 6 companies

2476. Closest Nodes Queries in a Binary Search TreeVideo

Solution44.9%Medium

Array, Binary Search +4· 1 company

2477. Minimum Fuel Cost to Report to the CapitalVideo

Solution65.0%Medium

Breadth-First Search, Depth-First Search +2· 5 companies

2492. Minimum Score of a Path Between Two CitiesVideo

Solution66.2%Medium

Breadth-First Search, Depth-First Search +2· 5 companies

2556. Disconnect Path in a Binary Matrix by at Most One FlipVideo

Solution27.8%Medium

Array, Breadth-First Search +3· 1 company

2596. Check Knight Tour ConfigurationVideo

Solution62.0%Medium

Array, Breadth-First Search +3· 3 companies

2641. Cousins in Binary Tree IIVideo

Solution75.8%Medium

Binary Tree, Breadth-First Search +3· 2 companies

2658. Maximum Number of Fish in a GridVideo

Solution70.5%Medium

Array, Breadth-First Search +3· 4 companies

2685. Count the Number of Complete ComponentsVideo

Solution80.8%Medium

Breadth-First Search, Depth-First Search +2· 4 companies

2764. Is Array a Preorder of Some ‌Binary TreeVideoPremium

Solution67.8%Medium

Binary Tree, Depth-First Search +2

2773. Height of Special Binary TreeVideoPremium

Solution75.2%Medium

Binary Tree, Breadth-First Search +2

2852. Sum of Remoteness of All CellsVideoPremium

Solution70.8%Medium

Array, Breadth-First Search +4· 1 company

2925. Maximum Score After Applying Operations on a TreeVideo

Solution47.2%Medium

Depth-First Search, Dynamic Programming +1· 1 company

3004. Maximum Subtree of the Same ColorVideoPremium

Solution59.2%Medium

Array, Depth-First Search +2· 2 companies

3067. Count Pairs of Connectable Servers in a Weighted Tree NetworkVideo

Solution55.6%Medium

Array, Depth-First Search +1· 2 companies

3157. Find the Level of Tree with Minimum SumVideoPremium

Solution69.6%Medium

Binary Tree, Breadth-First Search +2· 1 company

3249. Count the Number of Good NodesVideo

Solution55.0%Medium

Depth-First Search, Tree

3310. Remove Methods From ProjectVideo

Solution70.2%Medium

Breadth-First Search, Depth-First Search +1· 1 company

3319. K-th Largest Perfect Subtree Size in Binary TreeVideo

Solution61.6%Medium

Binary Tree, Depth-First Search +2· 1 company

3331. Find Subtree Sizes After ChangesVideo

Solution52.8%Medium

Array, Depth-First Search +3

3372. Maximize the Number of Target Nodes After Connecting Trees IVideo

Solution69.5%Medium

Breadth-First Search, Depth-First Search +1· 2 companies

3376. Minimum Time to Break Locks IVideo

Solution32.8%Medium

Array, Backtracking +4· 1 company

3387. Maximize Amount After Two Days of ConversionsVideo

Solution60.6%Medium

Array, Breadth-First Search +3· 3 companies

3419. Minimize the Maximum Edge Weight of GraphVideo

–45.2%Medium

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

3481. Apply SubstitutionsVideoPremium

Solution78.0%Medium

Array, Breadth-First Search +5· 1 company

3493. Properties GraphVideo

Solution48.6%Medium

Array, Breadth-First Search +4· 1 company

3528. Unit Conversion IVideo

Solution53.3%Medium

Breadth-First Search, Depth-First Search +1· 1 company

3535. Unit Conversion IIVideoPremium

Solution61.5%Medium

Array, Breadth-First Search +3· 1 company

Showing 151–200 of 208