Given a binary tree root, return the leftmost node’s value on each level of the tree.
Constraints
n ≤ 100,000 where n is the number of nodes in roothttps://binarysearch.com/problems/Left-Side-View-of-a-Tree
Input
Output
[0, 5, 1]You are given a binary tree root which is almost a binary search tree except two nodes’ values have been swapped. Return the original binary search tree.
Given a binary tree root, return the largest sum of a subtree that is also a binary search tree.
Given a binary tree root, return the longest path between any two nodes in the tree.
Given a binary tree root, return the top view of the tree, sorted left-to-right.
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