Strategy Design Pattern

The Strategy Pattern is a behavioral design pattern that enables selecting an algorithm or behavior at runtime. It defines a family of algorithms, encapsulates each one in a separate class, and makes them interchangeable. This pattern promotes flexibility, extensibility, and act to the Open/Closed Principle by allowing new strategies to be introduced without modifying existing code.

Key Components of the Strategy Pattern

1. Context:

• The class that interacts with the client and uses a strategy to perform a task.
• Holds a reference to a strategy object.

2. Strategy Interface:

• Defines a common interface that all concrete strategies must implement.

3. Concrete Strategies:

• Implement the specific algorithm or behavior defined in the strategy interface.
• These are interchangeable and provide different ways to solve the problem.

Here’s how it works:

1. Define the Protocol: The first step is to define the Protocol that will be common to all strategies. The Protocol should contain the methods that all strategies must implement.
2. Implement the strategies: The next step is to create concrete implementations of the strategies. Each strategy implements the common Protocol in its own way.
3. Use the strategies: The client code can use the strategies by…