For the questions below, assume that a linked list is implemented using the Node class where a Node contains instance data of int info; and Node next; where next references the next Node in the linked list. Also assume that head references the first Node in the list.
-Which of the following instructions would create an initially empty linked list?
A) Node head = new Node( );
B) Node head = Node;
C) Node head = null;
D) Node head = new Node(0);
E) Node head = list;

Question

Quizplus · Accepted Answer

C) The initial linked list will be empty, and so head should be null to indicate that there are no Nodes in the list yet. The answer in B is syntactically invalid, and the answers in A and D may be invalid depending on what parameter(s) the Node constructor expects, but in any event, the answers in A and D will create a Node, and therefore the initial list will not be empty.

For the Questions Below, Assume That a Linked List Is