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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 methods. This lesson helps you understand the constraints and implement a solution to check if two nodes sum to a given value, enhancing your tree traversal and problem-solving skills.

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] ...