A collection of LLD problems implemented in C#, focusing on clean architecture, SOLID principles, and design patterns.
| Problem | Concepts |
|---|---|
| Deck of Cards | Enums, Immutability, Fisher-Yates Shuffle |
| Tic Tac Toe | Nullable types, Fail-fast, SRP |
| Parking Lot | Strategy Pattern, Repository Pattern, DI |
| Key Value Store | In-memory storage, Lazy expiry, Redis semantics |
Each problem lives in its own folder with a README explaining design decisions and a language-specific subfolder for the implementation.
problems/
└── ProblemName/
├── README.md
└── csharp/
- C# / .NET
More languages will be added over time.