Heaps MCQ question and answer with solution

1.
What is the time complexity of inserting an element into a binary heap?

A. O(1)

B. O(log n)

C. O(n)

D. O(n log n)

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2.
Which of the following is true for a min-heap?

A. The root node is the smallest element, and every parent node is smaller than its children.

B. The root node is the largest element, and every parent node is larger than its children.

C. All nodes are arranged in a complete binary tree.

D. The tree is always balanced.

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3.
In a max-heap, which node property is true?

A. Every parent node is greater than or equal to its children.

B. Every parent node is less than or equal to its children.

C. All nodes have the same value.

D. The root node is always the smallest element.

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4.
How do you maintain the heap property after deleting the root node?

A. By performing a heapify operation.

B. By reordering the entire heap.

C. By inserting a new element at the root.

D. By performing an inorder traversal.

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5.
Which data structure is commonly used to implement priority queues?

A. Heap

B. Binary Search Tree

C. AVL Tree

D. Red-Black Tree

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6.
What is the height of a complete binary heap with n nodes?

A. ⌈log2(n + 1)⌉

B. ⌈log2(n)⌉

C. ⌈n / 2⌉

D. log2(n) + 1

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7.
What is the primary operation performed when adjusting a heap after insertion or deletion?

A. Heapify

B. Sorting

C. Searching

D. Balancing

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8.
In a binary heap, how is the parent node index calculated from a child node index i?

A. (i - 1) / 2

B. (i + 1) / 2

C. 2 * i + 1

D. 2 * i - 1

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9.
What is the time complexity of building a heap from an unsorted array?

A. O(log n)

B. O(n log n)

C. O(n)

D. O(n²)

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10.
How do you find the maximum element in a max-heap?

A. The root node contains the maximum element.

B. The maximum element is always the leftmost leaf.

C. By performing an inorder traversal.

D. By searching the entire heap.

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Heaps MCQ question and answer with solution | Data Structure MCQs

1. What is the time complexity of inserting an element into a binary heap?

Answer & Solution

2. Which of the following is true for a min-heap?

Answer & Solution

3. In a max-heap, which node property is true?

Answer & Solution

4. How do you maintain the heap property after deleting the root node?

Answer & Solution

5. Which data structure is commonly used to implement priority queues?

Answer & Solution

6. What is the height of a complete binary heap with n nodes?

Answer & Solution

7. What is the primary operation performed when adjusting a heap after insertion or deletion?

Answer & Solution

8. In a binary heap, how is the parent node index calculated from a child node index i?

Answer & Solution

9. What is the time complexity of building a heap from an unsorted array?

Answer & Solution

10. How do you find the maximum element in a max-heap?

Answer & Solution

Read More Section(Heaps)

1.
What is the time complexity of inserting an element into a binary heap?

2.
Which of the following is true for a min-heap?

3.
In a max-heap, which node property is true?

4.
How do you maintain the heap property after deleting the root node?

5.
Which data structure is commonly used to implement priority queues?

6.
What is the height of a complete binary heap with n nodes?

7.
What is the primary operation performed when adjusting a heap after insertion or deletion?

8.
In a binary heap, how is the parent node index calculated from a child node index i?

9.
What is the time complexity of building a heap from an unsorted array?

10.
How do you find the maximum element in a max-heap?