In a priority queue, elements with the same priority are dequeued in what order?
It depends on the specific priority queue implementation
Random order
Sorted order based on an additional attribute
The order they were enqueued
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)
Which of the following data structures can be efficiently used to implement a priority queue?
Doubly Linked List
Binary Heap
Binary Search Tree
Hash Table
In a scenario simulating a print queue, where print jobs with higher priority should be executed first, which queue implementation is most suitable?
Priority queue
Deque (Double-ended queue)
Simple queue
Circular queue
What is the time complexity of inserting an element into a binary heap-based priority queue in the worst-case scenario?
O(n log n)
O(log n)
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
Implementing a Last-In-First-Out (LIFO) data structure
Performing a breadth-first search in a graph
You need to implement a queue using two stacks. What is the time complexity of the dequeue operation in the worst-case scenario?
In Dijkstra's algorithm, how does a priority queue help in finding the shortest path?
It prioritizes nodes based on their distance from the source node
It stores all possible paths and their lengths
It optimizes the relaxation step by providing efficient updates
It keeps track of visited nodes to avoid cycles
In a circular queue implemented using an array of size 5, if the front is at index 3 and the rear is at index 1, how many elements are present in the queue?
2
1
4
3
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 facilitates visiting all neighbors of a node before moving to the next level.
It ensures that nodes are visited in a depth-first manner.
It stores the path from the source node to the current node.