LLD - Behavioral Design Patterns — Part 1
Which component in the Strategy pattern defines the common interface for all supported algorithms?
Which component in the Strategy pattern defines the common interface for all supported algorithms?
easy🧠 Conceptual Q2 of Q15
Step-by-Step Solution
Solution:
Step 1: Identify Strategy pattern roles
The Strategy interface declares methods that all concrete strategies must implement.Step 2: Match roles to options
Context uses the Strategy interface, ConcreteStrategy implements it, and Client uses Context. Only the Strategy interface defines the common contract.Final Answer:
Strategy interface -> Option DQuick Check:
Common interface = Strategy interface [OK]
Quick Trick: Strategy interface defines algorithm contract [OK]
Common Mistakes:
MISTAKES- Confusing Context with interface
- Thinking ConcreteStrategy defines interface
- Assuming Client defines algorithm methods
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