Which real-world scenario is best represented using a priority queue?
Scheduling tasks in an operating system based on their priority levels
Maintaining a list of recently used applications
Managing a print queue where documents are printed in the order they are received
Storing a history of visited web pages in a browser
You have a queue implemented using a linked list. What is the time complexity of finding the kth element from the front of the queue?
O(n)
O(log k)
O(k)
O(1)
In a priority queue implementation using a sorted array, what is the time complexity of the dequeue operation in the worst-case scenario?
O(log n)
O(n log n)
What is the key advantage of using a linked list implementation for a queue over an array-based implementation?
Faster enqueue and dequeue operations
Lower memory usage
Easier to implement
Dynamic resizing to prevent overflow
You need to implement a queue using two stacks. What is the time complexity of the dequeue operation in the worst-case scenario?
Which of the following operations is NOT efficiently supported by a standard queue data structure?
Enqueue at the rear
Dequeue from the front
Get the front element
Search for a specific element
In a scenario simulating a print queue, where print jobs with higher priority should be executed first, which queue implementation is most suitable?
Circular queue
Deque (Double-ended queue)
Simple queue
Priority queue
How can you prevent a queue implemented using a linked list from encountering an overflow condition?
Implement a check for available memory before each enqueue operation
Use a circular linked list
Linked list implementation inherently prevents overflow
Use a fixed-size array instead of a linked list
Which of the following situations is MOST likely to benefit from using a priority queue?
Managing tasks based on their urgency level
Implementing a Last-In-First-Out (LIFO) data structure
Performing a breadth-first search in a graph
Storing a collection of sorted integers
What is the time complexity of inserting an element into a priority queue implemented using a binary heap (in the average case)?