CS211 Data Structures Sami Rollins Fall 2004.

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Presentation transcript:

CS211 Data Structures Sami Rollins Fall 2004

Introduction What is a data structure? Why do we need data structures? What should you know about data structures?

Administrative Information Course Website Syllabus Academic Dishonesty Tentative Calendar

Assignments Reading – Chapter 1 Homework 0 – due Monday

Data Structures What is a data structure?

Data Structures What is a data structure? –“a scheme for organizing related pieces of information.“ - Example “pieces of information”… Typically describes the operations which can be performed on the data and/or how data are organized to support those operations An example data structure from CS 101…

Arrays Primitive data structure What are the operations supported by an array?

Arrays Primitive data structure What are the operations supported by an array? –Insert data item (location) –Access data item (location) When would you choose to use an array? Would you ever need different functionality?

Common Data Structures Stacks – Last In First Out (LIFO) –Insert on top –Remove top element Queues – First In First Out (FIFO) –Insert at end –Remove from beginning Trees - Hierarchy –Root –Parent –Children

In this course… You will learn –Data structures and their operations –Common implementations of data structures –How to use data structures in a program

C Programming Review What is an algorithm? What is a variable? How do you declare a variable? What is a function? What is an if statement? When would you use one? What is a loop? What are the different types of loops? When would you use each type? What is a pointer? What is an array? What is a structure?