A linked list is a fundamental data structure used to store and manage a collection of elements. Unlike arrays or lists, a linked list stores elements in nodes where each node points to the next (and possibly previous) node, allowing for dynamic sizing and efficient insertion and deletion operations. Python doesn't have a built-in linked list data structure, but you can easily implement one using classes.
A singly linked list is the simplest form of a linked list where each node contains data and a reference to the next node. It allows traversal in only one direction—from the head to the end of the list.
Implementation Example:
A doubly linked list allows traversal in both directions, with each node containing references to both the next and previous nodes.
Implementation Example:
A circular linked list has a circular structure where the last node points back to the first node, creating a loop. This can be singly or doubly linked.
Implementation Example (Singly Circular):
Implementing a linked list in Python provides a flexible and dynamic way to manage collections of elements. Depending on your needs, you can choose from singly, doubly, or circular linked lists. Each type offers different advantages and is suitable for various use cases in programming. Understanding how to implement and utilize linked lists effectively will help you handle more complex data management tasks in your applications.