← Questions

Redundant connection in a directed graph

0
MicrosoftCodingLast asked Jan 2026

A rooted tree had one extra directed edge added. Given the edge list, return the edge to remove so the rest is a rooted tree again, taking the last such edge in the input when there are several. Cover both cases: a node with two parents, and a cycle.

Write and test your solution herePython in your browser, the question's tests level by level, every submission kept for you.Sign in to start coding