Solution: Two Sum IV - Input Is a BST
Explore how to apply breadth-first search to solve the Two Sum IV problem in a binary search tree. Learn to track complements with a set during traversal to efficiently find two nodes whose values add up to a specified target. Understand the time and space complexity of this O(n) solution for BST sum detection.
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We'll cover the following...
Statement
Given the root of a binary search tree and an integer k, determine whether there are two elements in the BST whose sum equals k. Return TRUE if such elements exist or FALSE otherwise.
Constraints:
The number of nodes in the tree is in the range
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