LLD - Behavioral Design Patterns — Part 1
Why does the Iterator pattern separate traversal logic from the collection itself?
Why does the Iterator pattern separate traversal logic from the collection itself?
hard🧠 Conceptual Q10 of Q15
Step-by-Step Solution
Solution:
Step 1: Understand separation of concerns in Iterator pattern
The pattern separates traversal logic to allow different ways to iterate without modifying the collection.Step 2: Analyze options for correctness
To allow multiple traversal strategies without changing the collection correctly states this benefit. B is unrelated to traversal logic, C is about modification control, A is false as multiple orders are possible.Final Answer:
To allow multiple traversal strategies without changing the collection -> Option DQuick Check:
Separation enables flexible traversal strategies [OK]
Quick Trick: Separate traversal to support multiple iteration ways [OK]
Common Mistakes:
MISTAKES- Thinking Iterator improves data structure speed
- Assuming Iterator enforces single traversal order
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