LinkedInseniorout. de 2025
Given the root of a binary tree, turn the tree upside down and return the new root. Both recursive + iterative approaches were expected.
Transform a binary tree by flipping it upside down so the original leftmost node becomes the new root and each parent becomes the right child while the original right child becomes the left child. The challenge is to rewire node pointers along the left spine (in-place, O(n) time) to produce the new tree structure.
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Given the root of a binary tree, turn the tree upside down and return the new root. Both recursive + iterative approaches were expected.
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