Arrays and Linked Lists - Advanced Concepts for Exams

Arrays and Linked Lists - Applications - Advanced Concepts

Q. What is the primary advantage of using a queue over an array?

Solution

A queue operates on a First-In-First-Out (FIFO) basis, which is its primary advantage over arrays.

Correct Answer: C — FIFO order

Q. What is the primary advantage of using a stack?

Solution

A stack operates on a Last In, First Out (LIFO) principle, allowing the most recently added element to be accessed first.

Correct Answer: B — LIFO order

Q. What is the time complexity of inserting an element at the beginning of a singly linked list?

Solution

Inserting an element at the beginning of a singly linked list takes constant time, hence O(1).

Correct Answer: A — O(1)

Q. Which data structure is best suited for implementing a queue?

Solution

Both arrays and linked lists can be used to implement a queue, as they can efficiently support FIFO operations.

Correct Answer: D — Both Array and Linked List

Q. Which of the following is a disadvantage of using a linked list over an array?

Solution

Linked lists do not allow random access to elements, unlike arrays which provide direct access via indices.

Correct Answer: D — Random access

Q. Which of the following is true about a circular linked list?

Solution

In a circular linked list, the last node points back to the first node, creating a circular structure.

Correct Answer: D — The last node points to the first node

Q. Which of the following sorting algorithms has the best average-case time complexity?

Solution

Quick Sort has the best average-case time complexity of O(n log n) among the given sorting algorithms.

Correct Answer: C — Quick Sort

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