108 Questions Total

Foundations of Data Structures and Algorithms MCQs

Topic-wise practice questions for Data Structures & Algorithms. Test your knowledge, check solutions on demand, and pace your preparation.

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Q21hard

Compare the Space Complexity of Chaining vs. Open Addressing.

Q22easy

You need to reverse a string. Which approach is most space- efficient?

Q23easy

A tree where every internal node has exactly two children is called a:

Q24easy

In a Linked List, what does head.next = head.next.next effectively do?

Q25easy

What does it mean for a sorting algorithm to be "Stable"?

Q26hard

What is the time complexity of the following loop?


for (int i = 1; i < n; i = i * 2) {
    // constant time operation
}

Q27medium

Which sorting algorithm is commonly used as the default sort in many languages (e.g., Python's sort(), Java's Arrays.sort() for objects)?

Q28easy

Why is it recommended to use a **Prime Number** for the size of a Hash Table?

Q29easy

A Forest is mathematically defined as a:

Q30medium

You have a 100GB file of data to sort, but your computer only has 8GB of RAM. Which sorting strategy is designed for this situation?