Doubly Linked List (Deleting the Last Node)

Deleting the Last Node of a Doubly Linked List

In this presentation, we will learn how to delete the last node of a doubly linked list. The initial state of the list is shown, with the target being to delete the last node.

Initial State and Setting Up Pointers

• To delete the last node, we use a temporary pointer that initially points to the first node.

• We move the temporary pointer towards the right until it reaches the last node.

Updating Pointers and Deleting Node

• Another pointer, temp2, is used to point to the node just before the one we want to delete.

• We update the next part of the last node to contain null since it will be deleted.

• The last node is freed using free(temp) function.

• After deletion, null is placed in its position.

Complete Code and Functionality

• The complete code includes functions for adding nodes at different positions and deleting the last node.

• A print function is also available for displaying elements before and after deletion.

• The main function demonstrates how these functions are called.

Execution and Result

• Before executing, elements in the linked list are displayed.

• After deletion, remaining elements are shown.

The transcript provided does not include specific timestamps for each bullet point. I have estimated approximate timestamps based on their order in relation to mentioned time intervals.