Data Structure

A way of organizing and storing data in a computer so that it can be accessed and modified efficiently. Common introductory data structures include arrays, linked lists, stacks, queues, trees (such as binary search trees), graphs, and hash tables, each with different access, insertion, and search characteristics. Data structures are a foundational topic in computer science education and are typically introduced with visual diagrams (boxes, circles, arrows), which creates accessibility barriers for blind and visually impaired learners when the diagrams are not paired with structurally faithful nonvisual representations.