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Problems

40 problems

Has videoPremium onlyReset
Array194Database104Hash Table83String71Depth-First Search57Dynamic Programming49Tree48Math45Sorting43Breadth-First Search40Greedy40Binary Tree38Binary Search31Two Pointers29Matrix28All topics

Medium · Premium · 40 results

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TitleSolutionAcceptDifficultyTopics
261. Graph Valid TreeVideoPremium
Solution49.9%Medium
Breadth-First Search, Depth-First Search +2· 9 companies
286. Walls and GatesVideoPremium
Solution63.9%Medium
Array, Breadth-First Search +1· 11 companies
314. Binary Tree Vertical Order TraversalVideoPremium
Solution57.8%Medium
Binary Tree, Breadth-First Search +4· 9 companies
323. Number of Connected Components in an Undirected GraphVideoPremium
Solution64.9%Medium
Breadth-First Search, Depth-First Search +2· 7 companies
339. Nested List Weight SumVideoPremium
Solution85.9%Medium
Breadth-First Search, Depth-First Search· 6 companies
364. Nested List Weight Sum IIVideoPremium
Solution66.8%Medium
Breadth-First Search, Depth-First Search +1· 3 companies
490. The MazeVideoPremium
Solution60.4%Medium
Array, Breadth-First Search +2· 13 companies
505. The Maze IIVideoPremium
Solution55.0%Medium
Array, Breadth-First Search +5· 5 companies
582. Kill ProcessVideoPremium
Solution70.4%Medium
Array, Breadth-First Search +3· 4 companies
694. Number of Distinct IslandsVideoPremium
Solution62.8%Medium
Breadth-First Search, Depth-First Search +3· 12 companies
737. Sentence Similarity IIVideoPremium
Solution51.2%Medium
Array, Breadth-First Search +4· 4 companies
742. Closest Leaf in a Binary TreeVideoPremium
Solution47.4%Medium
Binary Tree, Breadth-First Search +2· 3 companies
1087. Brace ExpansionVideoPremium
Solution66.5%Medium
Backtracking, Breadth-First Search +1· 6 companies
1102. Path With Maximum Minimum ValueVideoPremium
Solution54.6%Medium
Array, Binary Search +5· 3 companies
1197. Minimum Knight MovesVideoPremium
Solution41.8%Medium
Breadth-First Search· 13 companies
1215. Stepping NumbersVideoPremium
Solution48.2%Medium
Backtracking, Breadth-First Search +1· 1 company
1236. Web CrawlerVideoPremium
Solution68.8%Medium
Breadth-First Search, Depth-First Search +2· 7 companies
1242. Web Crawler MultithreadedVideoPremium
–49.5%Medium
Breadth-First Search, Concurrency +1· 9 companies
1245. Tree DiameterVideoPremium
Solution61.1%Medium
Breadth-First Search, Depth-First Search +3· 7 companies
1257. Smallest Common RegionVideoPremium
Solution68.6%Medium
Array, Breadth-First Search +4· 1 company
1273. Delete Tree NodesVideoPremium
Solution61.2%Medium
Array, Breadth-First Search +2· 1 company
1430. Check If a String Is a Valid Sequence from Root to Leaves Path in a Binary TreeVideoPremium
Solution47.6%Medium
Binary Tree, Breadth-First Search +2
1485. Clone Binary Tree With Random PointerVideoPremium
Solution81.2%Medium
Binary Tree, Breadth-First Search +3· 2 companies
1490. Clone N-ary TreeVideoPremium
Solution83.2%Medium
Breadth-First Search, Depth-First Search +2· 1 company
1602. Find Nearest Right Node in Binary TreeVideoPremium
Solution75.2%Medium
Binary Tree, Breadth-First Search +1· 1 company
1660. Correct a Binary TreeVideoPremium
Solution74.3%Medium
Binary Tree, Breadth-First Search +3· 1 company
1730. Shortest Path to Get FoodVideoPremium
Solution57.7%Medium
Array, Breadth-First Search +1· 2 companies
1740. Find Distance in a Binary TreeVideoPremium
Solution74.3%Medium
Binary Tree, Breadth-First Search +3· 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
2174. Remove All Ones With Row and Column Flips IIVideoPremium
Solution67.2%Medium
Array, Bit Manipulation +2· 1 company
2445. Number of Nodes With Value OneVideoPremium
Solution66.3%Medium
Binary Tree, Breadth-First Search +2· 1 company
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
3157. Find the Level of Tree with Minimum SumVideoPremium
Solution69.6%Medium
Binary Tree, Breadth-First Search +2· 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
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
3831. Median of a Binary Search Tree LevelVideoPremium
Solution86.4%Medium
Binary Search Tree, Binary Tree +3
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