Entity relation
Object-oriented Design
What's Included
Practice class design, entity modeling and design patterns across classic object-oriented interview scenarios. Covers SOLID principles and real-world design problems.
Highlights
Real OOD questions sourced from top tech company interviews
Model answers applying SOLID principles & design patterns
Classic scenarios: parking lot, chess, elevator & more
Sharpen class design, inheritance & interface skills
20k+students
10k+reported
19problems
5hours
All OOD Questions
19 questions
Updated: Jul 9, 2026