Do you know design patterns. List few?

The software design pattern is a specification or set of rules for solving problems. It provides a reusable solution to a commonly occurring problem within a given context in software engineering.

Commonly design patterns are categorized into three types in which Few designed patterns are listed below:

• Creational design pattern: The Singleton Design Pattern
• Structural design pattern: The Decorator Design Pattern
• Behavioral design pattern: The Command Design Pattern