The next set of questions list code and ask you to describe the contents of the

Question

The next set of questions list code and ask you to describe the contents of the chain headed by firstNode and the value of the node referred to be currentNode. Please also explain why.

Question 1. What is the contents of the chain headed by firstNode?

F. 2

Question 2. What is the data held in the node referred to by currentNode?

E. 7

Node a = new Node(5);

Node b = new Node(3, a);

Node c = new Node(7, b);

Node firstNode = new Node(2, c);

Node currentNode = firstNode;

currentNode.next = currentNode.next.next;

Question 3. What is the contents of the chain headed by firstNode?

J. 2->5

Question 4. What is the data held in the node referred to by currentNode?

E. 7

Node a = new Node(5);

Node b = new Node(3, a);

Node firstNode = new Node(2,b);

Node currentNode = firstNode;

currentNode = currentNode.next;

currentNode = currentNode.next;

System.out.println(currentNode.next);

Question 5. What is the result of the println?

6.A 5 is printed

Node a = new Node(5);

Node b = new Node(3, a);

Node firstNode = new Node(2,b);

Node currentNode = firstNode;

currentNode = currentNode.next;

currentNode = currentNode.next;

System.out.println(currentNode.next.data);

Question 6. What is the result of the println?

Explanation / Answer

Node a = new Node(5);

Node b = new Node(3, a);

Node c = new Node(7, b);

Node firstNode = new Node(2, c);

Node currentNode = firstNode;

firstNode => 2 -> 7 -> 3-> 5 -> NULL

currentNode => firstNode

Question 3. What is the contents of the chain headed by firstNode?

Ans: G. 2->7->3->5

Q4. What is the data held in the node referred to by currentNode?

Ans: C. 2

####################

Node a = new Node(5);

Node b = new Node(3, a);

Node firstNode = new Node(2,b);

Node currentNode = firstNode;

currentNode = currentNode.next;

currentNode = currentNode.next;

System.out.println(currentNode.next);

firstNode => 2 -> 3 -> 5 -> null

currentNode => 5 -> null

Question 5. What is the result of the println?

Ans: A null is printed (because next of 5 is null)

######################

Node a = new Node(5);

Node b = new Node(3, a);

Node firstNode = new Node(2,b);

Node currentNode = firstNode;

currentNode = currentNode.next;

currentNode = currentNode.next;

System.out.println(currentNode.next.data);

firstNode => 2 -> 3 -> 5 -> null

currentNode => 5 -> null

Ans: 1. An error is thrown

because next of 5 is null so, null.data throw an error

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