18 Questions
What is the result of attempting to dequeue from an empty queue?
Queue underflow
In a queue data structure, where do new items enter and existing items exit?
New items enter at the rear or back of the queue, and existing items exit from the front of the queue.
In array implementation of a queue, what happens when the rear of the queue reaches the end of the array?
The rear of the queue wraps around to the beginning of the array.
What is the time complexity of the enqueue operation in a queue implemented using an array?
O(1) amortized
What is the advantage of using a dequeue data structure over a standard queue?
A dequeue allows insertion and removal of elements from both ends, making it more flexible than a standard queue.
How does round robin scheduling relate to queues?
Round robin scheduling uses a queue to manage processes, where each process is given a fixed time slice (time quantum) before the next process is scheduled.
What is the time complexity of the add_rear() operation when implementing a deque using a Python List?
O(n)
What is the purpose of the remove_front() operation in a deque?
To remove the front item from the deque.
What is the advantage of using a deque data structure in a Palindrome Checker application?
It allows for efficient comparison of the first and last characters of the string.
What is the time complexity of the add_front() operation when implementing a deque using a Python List?
O(1)
What is the purpose of the size() operation in a deque?
To return the number of items in the deque.
What would happen if you try to remove an item from an empty deque?
It would result in an underflow error.
How is the wrap-around effect achieved in a queue implementation using an array?
By using the Modulus (%) arithmetic operator
What is the purpose of the enqueue operation in a queue?
To add a new item to the queue.
What happens when a queue is full and an enqueue operation is attempted?
Queue overflow occurs, and the operation is not allowed.
How does a round-robin scheduler use a queue to schedule tasks?
By repeatedly dequeueing and enquing tasks in a circular manner.
What is a deque data structure, and how does it differ from a queue?
A deque is a double-ended queue that allows items to be added or removed from both ends.
What is the purpose of the isEmpty() operation in a deque?
To determine whether the deque is empty or not.
Test your understanding of data structures and algorithms, focusing on stacks and queues. This quiz covers the basics of stacks, queues, and their applications in computer science.
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