Computer Science

Computer Science encompasses the study of algorithms, data structures, software development, and the principles of computing.

Basic Concepts

Data Structures

What Are Data Structures?

Data structures are ways to organize and store data so that computers can use it efficiently. Just like you organize your school supplies in a backpack, data structures help computers find and manage information quickly.

Common Types of Data Structures

  • Arrays: Store items in a list, like a row of lockers.
  • Linked Lists: Items are connected together, like a treasure hunt where each clue leads to the next.
  • Stacks and Queues: Like a stack of plates (last in, first out) or a line at the cafeteria (first in, first out).
  • Trees and Graphs: Data is organized like a family tree or city map.

How Do Data Structures Help?

Choosing the right data structure makes programs faster and saves memory. They allow computers to search, add, or remove data efficiently.

Everyday Uses

Data structures are used in video games (tracking player scores), web browsers (back and forward history), and social media (friend connections).

Examples

  • Using an array to store the high scores in a game.

  • Organizing web browser history with a stack.

In a Nutshell

Data structures are ways of organizing information so computers can find and use it efficiently.

Key Terms

Array
A collection of items stored in a specific order.
Stack
A data structure where the last item added is the first to be removed (LIFO).
Queue
A data structure where the first item added is the first to be removed (FIFO).