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Problems

20 problems

Has videoPremium onlyReset
Breadth-First SearchArray447String248Hash Table189Math173Database113Sorting100Simulation93Two Pointers70Counting69Bit Manipulation54Greedy51Matrix41Tree40Depth-First Search39Binary Tree37All topics

Easy · With video · 20 results

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TitleSolutionAcceptDifficultyTopics
100. Same TreeVideo
Solution68.0%Easy
Binary Tree, Breadth-First Search +2· 9 companies
101. Symmetric TreeVideo
Solution62.1%Easy
Binary Tree, Breadth-First Search +2· 11 companies
104. Maximum Depth of Binary TreeVideo
Solution78.6%Easy
Binary Tree, Breadth-First Search +2· 17 companies
111. Minimum Depth of Binary TreeVideo
Solution53.7%Easy
Binary Tree, Breadth-First Search +2· 7 companies
112. Path SumVideo
Solution55.8%Easy
Binary Tree, Breadth-First Search +2· 9 companies
226. Invert Binary TreeVideo
Solution80.5%Easy
Binary Tree, Breadth-First Search +2· 9 companies
404. Sum of Left LeavesVideo
Solution63.1%Easy
Binary Tree, Breadth-First Search +2· 6 companies
463. Island PerimeterVideo
Solution74.3%Easy
Array, Breadth-First Search +2· 9 companies
530. Minimum Absolute Difference in BSTVideo
Solution59.3%Easy
Binary Search Tree, Binary Tree +3· 3 companies
559. Maximum Depth of N-ary TreeVideo
Solution73.5%Easy
Breadth-First Search, Depth-First Search +1· 2 companies
617. Merge Two Binary TreesVideo
Solution79.2%Easy
Binary Tree, Breadth-First Search +2· 8 companies
637. Average of Levels in Binary TreeVideo
Solution74.8%Easy
Binary Tree, Breadth-First Search +2· 4 companies
653. Two Sum IV - Input is a BSTVideo
Solution63.7%Easy
Binary Search Tree, Binary Tree +5· 8 companies
733. Flood FillVideo
Solution68.6%Easy
Array, Breadth-First Search +2· 12 companies
783. Minimum Distance Between BST NodesVideo
Solution61.8%Easy
Binary Search Tree, Binary Tree +3· 4 companies
965. Univalued Binary TreeVideo
Solution73.5%Easy
Binary Tree, Breadth-First Search +2· 3 companies
993. Cousins in Binary TreeVideo
Solution59.8%Easy
Binary Tree, Breadth-First Search +2· 6 companies
1379. Find a Corresponding Node of a Binary Tree in a Clone of That TreeVideo
Solution85.9%Easy
Binary Tree, Breadth-First Search +2· 1 company
1469. Find All The Lonely NodesVideoPremium
Solution83.8%Easy
Binary Tree, Breadth-First Search +2· 1 company
1971. Find if Path Exists in GraphVideo
Solution55.5%Easy
Breadth-First Search, Depth-First Search +2· 5 companies
Showing 1–20 of 20