In a priority queue, elements with the same priority are dequeued in what order?
Sorted order based on an additional attribute
Random order
The order they were enqueued
It depends on the specific priority queue implementation
Which of the following data structures can be efficiently used to implement a priority queue?
Binary Heap
Doubly Linked List
Hash Table
Binary Search Tree
How can you prevent a queue implemented using a linked list from encountering an overflow condition?
Linked list implementation inherently prevents overflow
Use a fixed-size array instead of a linked list
Use a circular linked list
Implement a check for available memory before each enqueue operation
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
Priority queue
Deque (Double-ended queue)
Simple queue
Which data structure is commonly used to implement a priority queue where efficient insertion and removal of the highest-priority element are crucial?
You need to implement a queue using two stacks. What is the time complexity of the dequeue operation in the worst-case scenario?
O(1)
O(log n)
O(n)
O(n log n)
Which of the following situations is MOST likely to benefit from using a priority queue?
Performing a breadth-first search in a graph
Managing tasks based on their urgency level
Implementing a Last-In-First-Out (LIFO) data structure
Storing a collection of sorted integers
In Dijkstra's algorithm, how does a priority queue help in finding the shortest path?
It stores all possible paths and their lengths
It prioritizes nodes based on their distance from the source node
It optimizes the relaxation step by providing efficient updates
It keeps track of visited nodes to avoid cycles
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 oldest element is overwritten to make space
The enqueue operation is blocked until space becomes available
An error is thrown, preventing the operation
What is the key advantage of using a linked list implementation for a queue over an array-based implementation?
Easier to implement
Dynamic resizing to prevent overflow
Lower memory usage
Faster enqueue and dequeue operations