Week 7 — Low Level Design
Topics: OOP Principles · SOLID · Design Patterns · LLD Interview Problems
🚧 Content coming soon. This week's material is being prepared. Check back shortly.
What you'll learn this week
- The four pillars of OOP and why encapsulation is the most important
- SOLID principles: what they mean in practice, not just theory
- The Gang of Four patterns you actually need for interviews
- How to approach LLD problems: requirements → entities → relationships → code
Problems to solve
| Problem | Difficulty |
|---|---|
| Design a Parking Lot | Medium |
| Design a Library Management System | Medium |
| Design Snake and Ladder | Medium |
| Design a Ride-Sharing App (Uber) | Hard |
| Design an Elevator System | Hard |
Full notes, code walkthroughs, and video sessions will be added here.