Solution: Two Sum IV - Input Is a BST
Explore how to apply breadth-first search in a binary search tree to solve the Two Sum IV problem. Learn to track complements and node values using a set and queue, enabling you to determine if two elements sum to a target value in the BST efficiently.
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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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