Write Reverse Linked List in Python

Reversing a linked list is a common problem in data structures, which involves changing the direction of the links between nodes so that the list's head becomes the tail and vice versa. Here, I will provide a Python implementation for reversing a singly linked list.

Firstly, I'll define the Node class, which represents each element in the list, and then I'll define a LinkedList class which includes a method to reverse the list.

Explanation:

Node Class:

Each node has a data field and a next pointer to the next node in the list.

LinkedList Class:

The append method adds a new node to the end of the list.
The print_list method prints all the nodes in the list from head to tail.
The reverse method changes the pointers' directions:

- We keep track of three pointers: prev for the previous node, current for the current node, and next_node for storing the next node temporarily.

- Loop through each node, adjusting the next pointer to point back to the previous node until all nodes are reversed.

- Finally, reset the list's head to the last node processed, which is stored in prev.

This basic implementation provides a good starting point for understanding how to manipulate pointers in a linked list to reverse its order.

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