Min-heap MCQs

By: Prof. Dr. Fazal Rehman | Last updated: May 15, 2025

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1. : What is a Min-heap?





2. : Which operation in a Min-heap ensures that the heap property is maintained?





3. : What is the time complexity of finding the minimum element in a Min-heap?





4. : In a Min-heap, which node has the smallest value?





5. : Which data structure is commonly used to implement a Min-heap?





6. : Which operation in a Min-heap removes and returns the minimum element?





7. : In a Min-heap with n elements, what is the height of the heap?





8. : Which operation in a Min-heap inserts a new element while maintaining the heap property?





9. : What is the array representation of a Min-heap?





10. : Which traversal method can be used to print all elements of a Min-heap in sorted order?





11. : What is the worst-case time complexity of inserting an element into a Min-heap with n elements?





12. : Which operation in a Min-heap swaps elements to maintain the heap property?





13. : Which operation in a Min-heap decreases the value of a node and adjusts the heap if necessary?





14. : Which traversal method of a Min-heap visits nodes level by level?





15. : In a Min-heap, which operation retrieves the minimum element without removing it?





16. : Which operation in a Min-heap ensures that the heap property is restored bottom-up?





17. : Which of the following is NOT true about Min-heaps?





18. : Which operation in a Min-heap removes and returns the minimum element, and then restructures the heap?





19. : In a Min-heap, what is the relationship between a parent node i and its children 2i+1 and 2i+2?





20. : Which operation in a Min-heap ensures that the heap property is restored top-down?





   

Data Structures MCQs

Basic Concepts
  1. Introduction to Data Structures
  2. Complexity Analysis MCQs
Linear Data Structures MCQs
  1. Arrays MCQs
  2. Linked Lists MCQs
  3. Stacks MCQs
  4. Queues MCQs
Non-Linear Data Structures MCQs
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  2. Heaps MCQs
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Hashing MCQs MCQs
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