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Two Sum IV - Input Is a BST

Explore how to determine if two elements in a binary search tree sum to a given target number. Learn to apply breadth-first search techniques to traverse the tree efficiently and implement your solution in a coding playground to reinforce understanding.

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 [1,103][1, 10^3] ...