Which of the following real-world scenarios can be effectively modeled using a queue?
Managing a priority-based task list.
Storing the browsing history in a web browser.
Handling customer service requests in a first-come, first-served manner.
Implementing an undo/redo functionality in a text editor.
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?
Circular Queue
Hash Table
Binary Tree
Stack
What is the role of the 'front' pointer in a queue data structure?
It points to the element that has been in the queue the longest.
It determines if the queue is full or not.
It points to the location where the next element will be added.
It keeps track of the total number of elements in the queue.
What value does the 'isEmpty' operation on a queue return if the queue contains no elements?
True
0
The first element in the queue
-1
What is the primary difference between a queue and a stack?
Queues store numbers, while stacks store characters.
Queues use FIFO (First-In-First-Out), while stacks use LIFO (Last-In-First-Out).
Queues use LIFO (Last-In-First-Out), while stacks use FIFO (First-In-First-Out).
Queues are linear data structures, while stacks are non-linear.
What is the maximum number of elements a circular queue of size 'n' can hold?
n
n - 1
n + 1
It depends on the implementation
What is the worst-case time complexity of searching for an element in a queue implemented using a linked list?
O(n)
O(n log n)
O(1)
O(log n)
How do you efficiently handle the situation where the array representing the queue becomes full?
Use a linked list instead of an array.
Resize the array to accommodate more elements.
Stop accepting new elements.
Delete the oldest element.
What is the primary characteristic that distinguishes a queue from other linear data structures?
It is a sorted data structure.
Elements are added and removed from the same end.
Elements are added at one end and removed from the other.
It allows for random access of elements.
If a queue is implemented using a fixed-size array, what condition leads to a 'queue overflow' situation?
Trying to access an element beyond the queue's capacity.
Trying to remove an element from an empty queue.
Trying to add an element to a full queue.
Trying to sort the elements in the queue.