Which of the following situations is MOST likely to benefit from using a priority queue?
Storing a collection of sorted integers
Managing tasks based on their urgency level
Performing a breadth-first search in a graph
Implementing a Last-In-First-Out (LIFO) data structure
Which real-world scenario is best represented using a priority queue?
Storing a history of visited web pages in a browser
Maintaining a list of recently used applications
Managing a print queue where documents are printed in the order they are received
Scheduling tasks in an operating system based on their priority levels
What is the time complexity of inserting an element into a binary heap-based priority queue in the worst-case scenario?
O(n)
O(1)
O(log n)
O(n log n)
What is the time complexity of inserting an element into a priority queue implemented using a binary heap (in the average case)?
Which of the following operations is NOT efficiently supported by a standard queue data structure?
Search for a specific element
Enqueue at the rear
Get the front element
Dequeue from the front
When implementing a circular queue, what happens when you try to enqueue an element into a full queue?
The queue dynamically resizes to accommodate the new element
The enqueue operation is blocked until space becomes available
An error is thrown, preventing the operation
The oldest element is overwritten to make space
What happens when you dequeue from an empty circular queue?
The front pointer moves to the next position
The operation has no effect
An error is thrown
The queue becomes full
In a priority queue implementation using a sorted array, what is the time complexity of the dequeue operation in the worst-case scenario?
In the context of Breadth-First Search (BFS), how does a queue help explore a graph?
It maintains a list of visited nodes to prevent cycles.
It stores the path from the source node to the current node.
It facilitates visiting all neighbors of a node before moving to the next level.
It ensures that nodes are visited in a depth-first manner.
How does a queue ensure that elements are processed in the order they were added?
By using a hash function to index elements.
By using a First-In, First-Out (FIFO) approach.
By dynamically allocating memory for each element.
By using a Last-In, First-Out (LIFO) approach.