Algorithms

What is an algorithm?

• A step by step guide for Computer Science.

• Steps

• A flowchart

• Step by step instructions used to solve a problem.

What is a flowchart?

• Symbols and shapes.

• An image

• An algorithm represented graphically

Which flowchart symbol represents a decision?

• Circle

• Triangle

• Diamond

• Rectangle

Which flowchart symbol represents an input or output?

• Rectangle

• Parallelogram

• Pentagon

• Diamond

What symbol is used to represent the direction of the flow?

• A Line

• An Arrow

• A square

What are the 2 main ways an algorithm can be represented?

• Hardware and Software

• Flowcharts and Pseudocode

• Charts and Diagrams

When can algorithms be used?

• Only with computers

• when coding

• When designing a solution to any problem.

What is decomposition?

• Repeating a program

• Looping

• Breaking down a complex problem

• Putting a program in the correct order

What is sequencing?

• Small steps making up larger tasks

• When a task is repeated until there is a required outcome

• A question is asked and one of two courses of action happen

• The order in which tasks are to be carried out

What is selection?

• Small steps making up larger tasks

• When a task is repeated until there is a required outcome

• A question is asked and one of two courses of action happen

• The order in which tasks are to be carried out