Geeksforgeeks · Technology

All Duplicate Subtrees

Given a binary tree, find all duplicate subtrees present in the tree. Two subtrees are considered duplicates if they have the same structure and identical node values at corresponding positions.Return the root of each such tree in the form of a list.Example: Input: root = [1, 2, 3, 4, N, 2, 4, N, N, 4]

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