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Tree DSA Problems

Tree is an important concept in data structures and algorithms. Practice these problems to master Tree and prepare for technical interviews.

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148
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ArrayBacktrackingBashBiconnected ComponentBinary Indexed TreeBinary Search
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Difficulty: Medium
95. Unique Binary Search Trees II
MediumAdobe +14Backtracking +459.1439%
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LeetCode
96. Unique Binary Search Trees
MediumAmazonBinary Search Tree +461.834%
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LeetCode
98. Validate Binary Search Tree
MediumAdobe +8Binary Search Tree +333.6651%
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LeetCode
99. Recover Binary Search Tree
MediumAdobe +5Binary Search Tree +354.7878%
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LeetCode
102. Binary Tree Level Order Traversal
MediumAmazon +8Binary Tree +269.0621%
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LeetCode
103. Binary Tree Zigzag Level Order Traversal
MediumAdobe +8Binary Tree +260.4286%
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LeetCode
105. Construct Binary Tree from Preorder and Inorder Traversal
MediumAmazon +5Array +465.4749%
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LeetCode
106. Construct Binary Tree from Inorder and Postorder Traversal
MediumShopeeArray +464.8575%
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LeetCode
107. Binary Tree Level Order Traversal II
MediumAmazonBinary Tree +264.7718%
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LeetCode
109. Convert Sorted List to Binary Search Tree
MediumAmazon +3Binary Search Tree +463.2555%
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LeetCode
113. Path Sum II
MediumAmazon +4Backtracking +359.5776%
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LeetCode
114. Flatten Binary Tree to Linked List
MediumAmazon +3Binary Tree +466.9452%
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116. Populating Next Right Pointers in Each Node
MediumAdobe +11Binary Tree +464.1536%
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117. Populating Next Right Pointers in Each Node II
MediumAdobe +8Binary Tree +454.1076%
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129. Sum Root to Leaf Numbers
MediumAmazon +4Binary Tree +267.2322%
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156. Binary Tree Upside Down
MediumLinkedInBinary Tree +263.6198%
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173. Binary Search Tree Iterator
MediumAmazon +5Binary Search Tree +573.6326%
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199. Binary Tree Right Side View
MediumAmazon +8Binary Tree +364.2647%
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230. Kth Smallest Element in a BST
MediumAmazon +4Binary Search Tree +374.1247%
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235. Lowest Common Ancestor of a Binary Search Tree
MediumAmazon +5Binary Search Tree +366.6464%
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