Find LCA in a tree and extend to a DAG

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This is a medium difficulty Coding & Algorithms question, commonly asked during Onsite rounds at Atlassian.

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This question is commonly asked for Machine Learning Engineer candidates at Atlassian during technical interviews.

Question

Find LCA in a tree and extend to a DAG

PracHub · Accepted Answer

This question evaluates proficiency in graph algorithms and data structures, focusing on lowest common ancestor computation in rooted trees and its generalization to directed acyclic graphs, along with complexity analysis for preprocessing and handling many queries.

Quick Overview

Find LCA in a tree and extend to a DAG