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Solution Review: Least Common Ancestor

Explore the solution for finding the least common ancestor (LCA) in a binary search tree. Learn how to use recursive conditional checks to identify the lowest node with two given descendants. Understand the step-by-step logic to determine when to traverse the left or right subtree and when the current node is the LCA.

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Solution

For a given tree T, the LCA between two nodes n1 and n2 is the lowest node in T that has both n1 and n2 as its descendants. ...