Solution: Two Sum IV - Input Is a BST
Explore how to solve the Two Sum IV problem in a binary search tree by applying breadth-first search. Understand using sets to track complements and efficiently determine if two nodes sum to a target value, improving your tree traversal problem-solving skills.
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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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