27.3.21. Strategy Pattern

Try these first

1. 1.

   What is the main purpose of the Strategy Pattern?

   Hint

   Think of situations where you might change methods based on conditions.

2. 2.

   Give an example of where the Strategy Pattern could be applied.

   Hint

   Consider any operations that can vary based on type or data.

3. 3.

   What does the Strategy Pattern allow you to do?

   • Change data types
   • Select an algorithm at runtime
   • Create more classes

   Hint

   Think of situations where you might choose different algorithms.

4. 4.

   True or False: The Strategy Pattern can make code less flexible.

   • True
   • False

   Hint

   Consider the purpose of encapsulating algorithms.

5. 5.

   Develop a mini-framework that uses the Strategy Pattern to implement various algorithms for processing user inputs. Outline the design and provide code snippets.

   Hint

   Think about how processing can vary based on input type.

6. 6.

   Critique a provided implementation of the Strategy Pattern in a project and propose enhancements to improve flexibility and maintainability.

   Hint

   Look for tightly-coupled components and suggest alternatives.