Modify a data structure : Using Add To Head

The video tutorial explains how to create and manipulate a linked list by adding nodes to the head. It starts with creating a linked list and adding the first node, which becomes both the head and tail. The tutorial then adds a second node, explaining how pointers work in a linked list. It discusses circular references between nodes and adds a third node to demonstrate the linked list structure. The video concludes by verifying the list's structure and introduces the next method, 'add to tail', to be covered in the following video.

What is the initial state of a linked list when the first node is added?

• The head and tail pointers point to different nodes.

• The head and tail pointers are null.

• The head and tail pointers point to the same node.

• The head pointer is null, and the tail pointer points to the node.

After adding a second node to the linked list, what happens to the head pointer?

• It points to the first node added.

• It points to the second node added.

• It points to a null value.

• It points to the tail node.

What does the circular reference in a linked list indicate?

• Nodes reference each other in a linear manner.

• Nodes do not reference each other.

• Nodes reference each other back and forth.

• Nodes reference only the head node.

When a third node is added to the head of the linked list, what is the value of the head node?

• 300

• 200

• 400

• 100

What is the next property of the tail node after adding three nodes?

• It points to the head node.

• It points to the second node.

• It is null.

• It points to the first node.

How does the previous property of the head node behave after adding three nodes?

• It is null.

• It points to the tail node.

• It points to the second node.

• It points to the first node.

What is the purpose of the add to head method in a linked list?

• To remove the head node.

• To add a node at the end of the list.

• To swap the head and tail nodes.

• To add a node at the beginning of the list.