Linked List

A linked list is like an array (a list in Python), but the way it's stored in memory are different. You initially only have access to the 1st element. But, each element has a pointer to the next one, so you can easily access every element in the list. The pointer from the last element points to null (None in python).

(Source: Wikipedia)

Objective

Implement a linked list class called LinkedList. You are not allowed to use arrays/lists anywhere in your code. It should have:

1. A function get(index) to access any element from the linked list.
2. A function append(elt) to add any element to the tail of the linked list.
3. A function insert(index, elt) to insert any element to any given position of the linked list.
4. A function set(index, elt) to change any element in the linked list to any value.
5. A function remove(index) to delete any element from the linked list.

TODO

• Add Python Version
• Test the Test Cases