Solution: Two Sum IV - Input Is a BST
Explore how to solve the Two Sum IV problem on a binary search tree by applying breadth-first search. Understand the use of a set to track visited nodes and check for complements, enabling you to return whether any two nodes sum to the target value. This lesson covers the algorithm, implementation, and complexity analysis for this common interview pattern.
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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