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AP Computer Science Principales

Unit 1

Unit 1: Basics

Introduction to AP Computer Science A Data Types Algorithms Object Oriented Programming

Unit 2

Unit 2: Advanced

Recursion Sorting Algorithms Searching Algorithms Data Structures

Unit 2 • Chapter 4

Data Structures

Video Summary

Data structures are a way of organizing data so that it can be efficiently accessed and manipulated. There are many different data structures, each with its own strengths and weaknesses. Some of the most common data structures include arrays, linked lists, stacks, queues, and trees. Data structures are used in a wide variety of applications, such as computer programs, operating systems, and databases.

Knowledge Check

What is the difference between a stack and a queue?

A queue is a linear data structure in which elements are added at one end and removed at the other end.

A stack is a linear data structure in which elements are added at one end and removed at the other end.

A stack is a linear data structure in which elements are added at one end and removed at the same end.

A queue is a linear data structure in which elements are added at one end and removed at the same end.

What is a hash table?

A data structure that stores data in an associative array.

A data structure that stores data in a binary tree.

A data structure that stores data in a linked list.

A data structure that stores data in a heap.

What is a binary search tree?