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Decode the Coding Interview in Kotlin: Real-World Examples

DIY: Lowest Common Ancestor of a Binary Tree III

Understand how to find the lowest common ancestor (LCA) of two nodes in a binary tree by leveraging parent node references. This lesson guides you through implementing an efficient Kotlin function to solve this common coding interview problem, enhancing your ability to break down and solve tree traversal challenges.

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Problem statement

Suppose you are given two nodes of a binary tree node1 and node2. Your task is to find the lowest common ancestor (LCA) of these two nodes in the tree.

Note: The lowest node that has both node1 and node2 as its descendants (where we allow a node to be a descendant of itself), is called the lowest ...