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CoursesTrees & GraphsGraph Foundations

Find Center of Star Graph

The center touches every edge — so two edges are all the evidence you need. Structure guarantees can turn O(n) into O(1).

Complete codeMultiple choiceTap6 exercises, 5 min
AlgoFox Pro

Trees & Graphs is part of AlgoFox Pro

You can read the whole course outline here. The exercises are in the app, along with your streak, your mistake review, and the progress that carries across your devices.

Pro starts with a 3 day free trial. The app store decides who is eligible for an introductory offer, and a lapsed subscription does not get another one.

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