Slug: tree-valid-01 · Paired reading: Chapter 19
Prompt
fn is_valid_bst(root: &Tree) -> bool — every node value strictly within
(lo, hi) open bounds, tightened on descent.
Enter your book access code
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).
Don’t have the book yet? Get it on Amazon (US and other storefronts linked in the site footer) — the Preface access code unlocks this gym.
intermediate · order 113