How to Solve Flip Equivalent Binary Trees Problem
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Flip Equivalent Binary Trees
For a binary tree T, we can define a flip operation as follows: choose any node, and swap the left and right child subtrees. A binary tree X is flip equivalent to a binary tree Y if and only if we can...
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Understanding the Flip Equivalent Binary Trees Problem
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Problem Statement
For a binary tree T, we can define a flip operation as follows: choose any node, and swap the left and right child subtrees. A binary tree X is flip equivalent to a binary tree Y if and only if we can make X equal to Y after some number of flip operations. Given the roots of two binary trees root1 and root2, return true if the two trees are flip equivalent or false otherwise.
Flip Equivalent Binary Trees
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Examples
root1 = [1,2,3,4,5,6,null,null,null,7,8], root2 = [1,3,2,null,6,4,5,null,null,null,null,8,7]trueWe flipped at nodes with values 1, 3, and 5.
root1 = [], root2 = []trueroot1 = [], root2 = [1]falseConstraints
The number of nodes in each tree is in the range [0, 100].Each tree will have unique node values in the range [0, 99].How Interview Coder Helps with Leetcode Problems
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