Modify a data structure : Add To Tail

The video tutorial explains the 'add to tail' method for a linked list, which is the reverse of the 'add to head' method. It covers creating a new node, handling cases where the linked list is empty, and setting the head and tail pointers appropriately. The tutorial concludes with testing the method to ensure it functions correctly.

What is the primary difference between the 'add to tail' and 'add to head' methods?

• The 'add to tail' method adds a node at the beginning of the list.

• The 'add to tail' method is used for removing nodes.

• The 'add to tail' method adds a node at the end of the list.

• The 'add to tail' method is only used for empty lists.

When adding a node to a non-empty list, what is the next step after creating the new node?

• Set the previous pointer of the head to the new node.

• Remove the current tail node.

• Set the next pointer of the current tail to the new node.

• Set the head pointer to the new node.

In the context of the 'add to tail' method, what should be done if the linked list is empty?

• Set the head and tail pointers to null.

• Set the next pointer of the new node to the head.

• Set the head pointer to the new node.

• Remove all nodes from the list.

What is the final step in the 'add to tail' method after handling the empty list scenario?

• Add another node to the head.

• Set the tail pointer to the new node.

• Set the previous pointer of the new node to null.

• Remove the head node.

Why is it important to test the 'add to tail' method after implementation?

• To confirm that the method functions as expected and adds nodes to the tail.

• To check if the method can handle multiple data types.

• To ensure the method removes nodes correctly.

• To verify that the method adds nodes to the head.