Object-Oriented Programming Presentation Series 2. data structures & algorithms

1. Data Structures &
Algorithms
M H B Ariyaratne
https://goo.gl/LPZSV1

2. Program
A computer program is a sequence of instructions that will automate performing
a specific task or solve a given problem.

3. Good Programs
run correctly
run efficiently
be easy to read and understand
be easy to debug and
be easy to modify

4. Algorithms + Data Structures = Programs

5. Problems sorted with Data Structures
& Algorithms
● Real world data storage
○ Patient
■ Name
■ Date of Birth
■ Age
■ Weight
■ Height
■ Blood Pressure
● Programmers tools
○ Not Real World Data
○ For the use of the Program Itself
● Modeling
○ Graphs, Plane routs,

6. Data Structure
● An Arrangement of Date in a computer's memory
● A particular way of organizing data in a computer so that it can be used
efficiently
● A key organizing factor in software design

7. Algorithms
Manipulate data in data structures in various ways
● often associate with data structures.
● a sequence of instructions that accomplishes a task in a finite time period
● receives zero or more inputs
● produces at least one output
● consists of clear and unambiguous instructions
● terminates after a finite number of steps

8. Thank you