NeetCode #436LC-652MediumTrees
← Back to All Problems#436 · #652 · Find Duplicate Subtrees(寻找重复的子树)
📌 Problem Statement & Constraints
Given the root of a binary tree, return all duplicate subtrees: subtrees that occur more than once anywhere in the tree, with the same structure and values. Return the root of one representative per duplicate group. Constraints: the number of nodes is in
[2, 5000], -200 <= Node.val <= 200.🔒
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