Log in from a computer to take this course

You'll need to log in from a computer to start Linear Data Structures. But you can practice or keep up your coding streak with the Codecademy Go app. Download the app to get started.

apple storegoogle store
Learn

Nodes are the fundamental building blocks of many computer science data structures. They form the basis for linked lists, stacks, queues, trees, and more.

An individual node contains data and links to other nodes. Each data structure adds additional constraints or behavior to these features to create the desired structure.

Consider the node depicted in the pane to the right. This node (node_a) contains a piece of data (the number 5) and a link to another node (node_b).

Instructions

Why do you think Nodes are so common?

What do they add that isn’t built-in to a language?

Sign up to start coding

Mini Info Outline Icon
By signing up for Codecademy, you agree to Codecademy's Terms of Service & Privacy Policy.

Or sign up using:

Already have an account?