What is the primary difference between a queue and a stack?
Queues are linear data structures, while stacks are non-linear.
Queues use LIFO (Last-In-First-Out), while stacks use FIFO (First-In-First-Out).
Queues store numbers, while stacks store characters.
Queues use FIFO (First-In-First-Out), while stacks use LIFO (Last-In-First-Out).
If a queue is implemented using a fixed-size array, what condition leads to a 'queue overflow' situation?
Trying to sort the elements in the queue.
Trying to add an element to a full queue.
Trying to remove an element from an empty queue.
Trying to access an element beyond the queue's capacity.
How does an array-based queue handle the underflow condition?
By overwriting the existing elements.
By using a circular array to reuse the empty spaces.
By raising an exception or returning an error value when attempting to dequeue from an empty queue.
By dynamically resizing the array.
Imagine a print queue in a busy office environment. Which data structure, implemented using an array, would be most suitable for managing this print queue effectively?
Hash Table
Circular Queue
Binary Tree
Stack
What is the main advantage of using a circular array for implementing a queue compared to a regular array?
Reduced memory consumption
Faster access to individual elements
Efficient utilization of space after multiple enqueue and dequeue operations
Better handling of sorted data
When would it be more advantageous to use a linked list implementation of a queue over an array-based implementation?
When dealing with a small, fixed number of elements.
When the maximum number of elements in the queue is known in advance.
When memory usage needs to be tightly controlled.
When dynamic resizing and the potential for overflow are concerns.
What data structure is used to implement a priority queue?
Linked List
Array
Heap
What is the primary characteristic that distinguishes a queue from other linear data structures?
Elements are added at one end and removed from the other.
It is a sorted data structure.
It allows for random access of elements.
Elements are added and removed from the same end.
What happens to the elements in an array-based queue after a dequeue operation?
The 'front' pointer is adjusted to point to the next element in the queue, effectively removing the first element logically.
The array is resized to accommodate the removal of the element.
The dequeued element is marked as deleted but remains in the array.
The remaining elements are shifted one position towards the front of the array.
In an array-based queue implementation, what happens when you dequeue from an empty queue?
An underflow condition occurs.
The first element is removed.
The queue remains unchanged.
The last element is removed.