Ace the Rust Interview

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The curriculum, drills, tutor, and interviewer mode are for readers of Ace the Rust Interview. The code is printed in the Preface (Companion site access).

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intermediate · order 137

Count components

graph-comp-01Related book chapters: 21 (optional — this page is complete on its own)components

Slug: graph-comp-01 · Paired reading: Chapter 21

Prompt

fn count_components(n: usize, edges: &[(usize, usize)]) -> usize — undirected connected components (DFS or Union-Find).