Which of the following is the code to insert a new node,referenced by newNode,into an empty queue represented by a circular linked list?
A)newNode.setNext(lastNode);
B)lastNode.setNext(lastNode);
LastNode = newNode;
C)newNode.setNext(lastNode);
NewNode = lastNode;
D)newNode.setNext(newNode);
LastNode = newNode;

Question

Quizplus · Accepted Answer

In a circular linked list, when inserting into an empty queue, the new node should point to itself to maintain the circular structure. Therefore, `newNode.setNext(newNode);` establishes this self-reference. Subsequently, updating `LastNode = newNode;` sets the newly inserted node as the last node in the queue, which is also the first node due to the queue being previously empty.

Which of the Following Is the Code to Insert a New