LLD - Behavioral Design Patterns — Part 1
What is the main purpose of the Iterator pattern in system design?
What is the main purpose of the Iterator pattern in system design?
easy🧠 Conceptual Q11 of Q15
Step-by-Step Solution
Solution:
Step 1: Understand the role of Iterator pattern
The Iterator pattern is designed to provide a way to access elements of a collection one by one without revealing the internal structure of the collection.Step 2: Compare with other options
Options B, C, and D describe unrelated design patterns or system functions such as data storage, object cloning, and security management.Final Answer:
To provide a way to access elements of a collection sequentially without exposing its underlying structure -> Option DQuick Check:
Iterator pattern = Access collection without exposing structure [OK]
Quick Trick: Iterator = access elements without showing internal details [OK]
Common Mistakes:
MISTAKES- Confusing Iterator with data storage or cloning patterns
- Thinking Iterator manages security or authentication
- Assuming Iterator modifies the collection
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