Bird
Raised Fist0

What is the main purpose of the Iterator pattern in system design?

easy🧠 Conceptual Q11 of Q15
LLD - Behavioral Design Patterns — Part 1

What is the main purpose of the Iterator pattern in system design?

ATo manage user authentication and authorization
BTo store data in a database efficiently
CTo create multiple copies of an object
DTo provide a way to access elements of a collection sequentially without exposing its underlying structure
Step-by-Step Solution
Solution:
  1. 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.
  2. 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.
  3. Final Answer:

    To provide a way to access elements of a collection sequentially without exposing its underlying structure -> Option D
  4. Quick 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

Want More Practice?

15+ quiz questions · All difficulty levels · Free

Free Signup - Practice All Questions
More LLD Quizzes