Solution: Two Sum IV - Input Is a BST
Explore how to solve the Two Sum IV problem by performing a breadth-first search on a binary search tree. Understand how to track visited node values using a set to check for complements that sum to a target integer. This lesson helps you implement an efficient O(n) time complexity solution while managing space complexity, reinforcing tree traversal and problem-solving skills relevant to coding interviews.
We'll cover the following...
We'll cover the following...
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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