Algorithms

Algorithms

1. Purpose

   • To complete a task.

2. Representations

   • Psuedocode
     • This is computer code, however, is is not specific to any language
     • Uses
       • When you wish to articulate an idea to someone who codes a different langauge.
   • Flow Charts
     • Graphical representation of the information
     • Uses
       • Easy description for 'non-computer people'
       • Good for people with learning difficulties like dislexia
   • Structured English
     • Uses
       • Easy description for 'non-computer people'
     • Using plain English to describe an algorithm

3. Purpose

   • To solve a problem in a finite amount of time.
   • A collection of unambiguous and executable operations
     • These perform specific tasks

4. Features

   • Iteration
     • This is repetition
     • Used to make loops
   • Sequence
     • An order of instructions
     • Programs are executed in order or sequence
   • Selection
     • Allows the program to make a decision
       • Often depends on variables having certain values
     • Often an 'if' statement