Question

Given a queue implemented as a linked list, identify the correct dequeue algorithm.

A) queuedequeue(queue) { head.data }
B) queuedequeue(queue) { queue.head.data }
C) dequeue(queue) { queue.head.data }
D) dequeue(queue) { head.data }

Answer 1

The correct dequeue algorithm for a linked list implementation of a queue is option C) dequeue(queue) { queue.head.data }.

The correct dequeue algorithm for a linked list implementation of a queue would be option C) dequeue(queue) { queue.head.data }. In this algorithm, we are accessing the data of the head node of the queue, which represents the oldest element in the queue and needs to be dequeued.

By using queue.head.data, we are specifically referring to the data stored in the head node of the queue.

This algorithm dequeues the oldest element from the queue and updates the head of the queue to the next node, effectively removing the dequeued element from the queue.