What is the time complexity of inserting an element into a priority queue implemented using a binary heap (in the average case)?
O(n)
O(n log n)
O(1)
O(log n)
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 Last-In, First-Out (LIFO) approach.
By using a First-In, First-Out (FIFO) approach.
By dynamically allocating memory for each element.
How can you prevent a queue implemented using a linked list from encountering an overflow condition?
Use a fixed-size array instead of a linked list
Use a circular linked list
Linked list implementation inherently prevents overflow
Implement a check for available memory before each enqueue operation
In the context of Breadth-First Search (BFS), how does a queue help explore a graph?
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.
It maintains a list of visited nodes to prevent cycles.
How does a circular queue determine if it is full?
Front pointer equals rear pointer
Rear pointer reaches the end of the array
A separate variable keeps track of the number of elements
Front pointer is one position behind the rear pointer (considering wrapping)
What is the time complexity of inserting an element into a binary heap-based priority queue in the worst-case scenario?
What is the key advantage of using a linked list implementation for a queue over an array-based implementation?
Dynamic resizing to prevent overflow
Easier to implement
Lower memory usage
Faster enqueue and dequeue operations
What happens when you dequeue from an empty circular queue?
The operation has no effect
The front pointer moves to the next position
The queue becomes full
An error is thrown
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(k)
O(log k)
In a priority queue implementation using a sorted array, what is the time complexity of the dequeue operation in the worst-case scenario?