← 📦 Data Structures20 / 25
Lesson 20 — Union-Find
Track groups
Union-Find merges sets and checks if two items are connected, fast.
Why it matters: it detects cycles and clusters in near O(1).
Task
Union 1-2 and 2-3, then check if 1 and 3 connect.
Keep going with Data Structures
Ready for more? These paid resources pick up where this lesson leaves off.
UdemyBestsellers
Top-rated Data Structures courses
Project-based Data Structures video courses — the perfect paid next step after these free lessons.
Browse on Udemy →AmazonReader picks
Best Data Structures books
Hand-picked Data Structures books to master the fundamentals offline.
See on Amazon →Some links on this page are affiliate links: we may earn a commission at no extra cost to you. We only recommend tools we believe are genuinely useful.