Solution: Two Sum IV - Input Is a BST
Explore a solution to the Two Sum IV problem where you identify if two nodes in a binary search tree add up to a target sum. Learn to apply breadth-first search and sets to track visited values efficiently, understanding the time and space complexity involved in the approach.
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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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