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Problems

178 problems

Has videoPremium onlyReset
Binary TreeArray2,209String870Hash Table786Math682Dynamic Programming666Sorting504Greedy480Binary Search352Depth-First Search335Database303Bit Manipulation283Matrix278Tree261Breadth-First Search255Two Pointers249All topics

With video · 178 results

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TitleSolutionAcceptDifficultyTopics
1932. Merge BSTs to Create Single BSTVideo
Solution40.3%Hard
Binary Search, Binary Tree +3· 3 companies
1973. Count Nodes Equal to Sum of DescendantsVideoPremium
Solution77.4%Medium
Binary Tree, Depth-First Search +1· 1 company
2005. Subtree Removal Game with Fibonacci TreeVideoPremium
–54.9%Hard
Binary Tree, Dynamic Programming +3· 1 company
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
2196. Create Binary Tree From DescriptionsVideo
Solution83.9%Medium
Array, Binary Tree +2· 7 companies
2236. Root Equals Sum of ChildrenVideo
Solution84.8%Easy
Binary Tree, Tree· 5 companies
2265. Count Nodes Equal to Average of SubtreeVideo
Solution88.6%Medium
Binary Tree, Depth-First Search +1· 4 companies
2313. Minimum Flips in Binary Tree to Get ResultVideoPremium
Solution56.9%Hard
Binary Tree, Depth-First Search +2· 1 company
2331. Evaluate Boolean Binary TreeVideo
Solution82.7%Easy
Binary Tree, Depth-First Search +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
2458. Height of Binary Tree After Subtree Removal QueriesVideo
Solution55.0%Hard
Array, Binary Tree +3· 3 companies
2471. Minimum Number of Operations to Sort a Binary Tree by LevelVideo
Solution74.2%Medium
Binary Tree, Breadth-First Search +1· 3 companies
2476. Closest Nodes Queries in a Binary Search TreeVideo
Solution44.9%Medium
Array, Binary Search +4· 1 company
2509. Cycle Length Queries in a TreeVideo
Solution60.9%Hard
Array, Binary Tree +1· 1 company
2583. Kth Largest Sum in a Binary TreeVideo
Solution59.4%Medium
Binary Tree, Breadth-First Search +2· 5 companies
2641. Cousins in Binary Tree IIVideo
Solution75.8%Medium
Binary Tree, Breadth-First Search +3· 2 companies
2673. Make Costs of Paths Equal in a Binary TreeVideo
Solution57.2%Medium
Array, Binary Tree +3· 1 company
2689. Extract Kth Character From The Rope TreeVideoPremium
Solution73.4%Easy
Binary Tree, Depth-First Search +1· 1 company
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
2792. Count Nodes That Are Great EnoughVideoPremium
Solution57.1%Hard
Binary Tree, Depth-First Search +2
3157. Find the Level of Tree with Minimum SumVideoPremium
Solution69.6%Medium
Binary Tree, Breadth-First Search +2· 1 company
3319. K-th Largest Perfect Subtree Size in Binary TreeVideo
Solution61.6%Medium
Binary Tree, Depth-First Search +2· 1 company
3831. Median of a Binary Search Tree LevelVideoPremium
Solution86.4%Medium
Binary Search Tree, Binary Tree +3
3997. Count Dominant Nodes in a Binary TreeVideo
Solution72.1%Medium
Binary Tree, Depth-First Search +1
Showing 151–178 of 178