DesignPattern

• Design patterns are reusable solutions to common programming problems.
• Improved code organization, reusability, and better software architecture.
• Knowing them is essential for interviews.

Three main categories of design patterns:

Creational Patterns

Like : Singleton, Simple Factory, Factory Method, Abstract, Builder, …

Structural Patterns

Like: Adapter, Decorator, Proxy, Facade, …

Behavioral Patterns

Like: Observer, Strategy, Chain of Responsibility, Command, Mediator, …