Heap operations (insertion, deletion, heapify) MCQs

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

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1. : Which data structure is typically used to implement a heap?





2. : What is the time complexity of inserting an element into a heap of size 𝑛?





3. : In a max-heap, which element is at the root?





4. : Which operation is used to maintain the heap property after an element is deleted from the heap?





5. : Which of the following is true about a min-heap?





6. : When inserting an element into a heap, which operation ensures that the heap property is maintained?





7. : What is the worst-case time complexity of deleting the root element from a heap of size 𝑛?





8. : Which type of heap is more commonly used in priority queue implementations?





9. : In a max-heap, which child of a node at index 𝑖 is the larger one?





10. : What is the primary advantage of using a heap over a sorted array for implementing priority queues?





11. : Which operation is used to convert an unordered array into a heap?





12. : What happens to the heap structure if an element is inserted into an already max-heap?





13. : Which condition is necessary to maintain during the heapify process?





14. : What is the time complexity of building a heap from an array of 𝑛 elements?





15. : Which operation is used to remove an arbitrary element from a heap?





16. : In a max-heap, what does the delete operation typically involve?





17. : Which data structure can efficiently implement both insertion and deletion operations in a heap?





18. : What is the index of the parent node of any node 𝑖 in a heap?





19. : Which property ensures that a heap is a complete binary tree?





20. : When deleting an element from a heap, what is the process used to maintain the heap property?





   

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
  1. Trees MCQs
  2. Heaps MCQs
  3. Graphs MCQs
Hashing MCQs MCQs
  1. Hash Tables
Sorting and Searching Algorithms MCQs 
  1. Sorting Algorithms MCQs
  2. Searching Algorithms MCQs
Miscellaneous
  1. Memory Management in data structures MCQs
  2. String Manipulation Algorithms MCQs
  1. Data Structures MCQs 1
  2. Data Structures MCQs 2
  3. Data Structures MCQs 3
  4. Data Structures MCQs 4
  5. Data Structures MCQs 5
  6. Stacks Solved MCQs
  7. Queues MCQs
  8. pointer mcqs
  9. Array MCQs
 

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