Reverse
Explore how to reverse a doubly linked list by swapping the next and previous pointers of each node and updating the head. Understand the algorithm's steps and see a detailed Python implementation with explanations. Practice reversing linked lists through hands-on coding challenges to enhance your grasp of this essential data structure operation.
We'll cover the following...
In this lesson, we consider how to reverse the nodes in a doubly linked list. Once we cover the concept of how to perform this action, we follow through with a Python implementation.
Algorithm
To reverse a doubly linked list, we need to switch the next and the previous pointers of every node. Also, we need to switch the last node with the head node of the linked list. Check out the illustration below for more clarity:
As we traverse the linked list, we swap the previous pointer with the next ...