OOP & Design Patterns - Iterator & Composite Pattern - Traversal Abstractions
Which of the following problems CANNOT be effectively solved using the Iterator & Composite Pattern for traversal abstractions?
Which of the following problems CANNOT be effectively solved using the Iterator & Composite Pattern for traversal abstractions?
easy🔍 Pattern Recognition Q2 of Q15
Step-by-Step Solution
Solution:
Step 1: Analyze problem structures
Iterator & Composite Pattern is designed for hierarchical or composite structures, not flat collections.Step 2: Identify which problem lacks hierarchy
Enumerating elements in a flat array is straightforward and does not require composite traversal abstractions.Final Answer:
Option B -> Option BQuick Check:
Flat array traversal does not need composite pattern [OK]
Quick Trick: Flat structures don't need composite traversal abstractions [OK]
Common Mistakes:
MISTAKES- Assuming composite pattern fits all traversal
- Confusing graph traversal with composite trees
- Thinking flat arrays require composite iterators
Trap Explanation:
PITFALL- Candidates often overapply composite pattern to simple flat collections where plain iteration suffices.
Interviewer Note:
CONTEXT- Tests candidate's ability to identify appropriate use cases and anti-patterns.
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