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Depth-First Search Database57 Array37 String20 Hash Table17 Math11 Sorting9 Two Pointers6 Binary Search5 Counting4 Design4 Linked List4 Simulation4 Binary Tree3 Bit Manipulation3 Data Stream3 All topics

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TitleSolutionAcceptDifficultyTopics

270. Closest Binary Search Tree ValueVideoPremium

Solution49.2%Easy

Binary Search, Binary Search Tree +3· 7 companies

1469. Find All The Lonely NodesVideoPremium

Solution83.8%Easy

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

2689. Extract Kth Character From The Rope TreeVideoPremium

Solution73.4%Easy

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

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