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Computer studies - Algorithms

Whats an algoirthm?

An algorith is a set of instructions that describes how to slove a problem. They can be designed using flowcharts or pseudocode.

Whats decomposition?

Decomposition is breaking a problem down into smaller, more managable chunks.

What is abstraction?

Abstraction is the process of removing smaller details from a problem so more importnat details can be focused on.

What is Pseudo-code?

Pseudo-code is a simple way of describing a set of instructions in a manner that resembles a programming language.

What are the three main categories of Pseudo-code?

. Inputs
. processes

. outputs

Whats a flow chart?

A flowchart is a diagram that shows an overview of an algorithm. Flowcharts use a variety of standard symbols to represent different elements, and arrows to show the flow or direction.

Whats an Input?

l programs need data to be added to or removed from code. Data entered into a program, either by the programmer or digitally, are referred to as inputs. These inputs are stored in variables and used to run the program.

Whats an Output?

n order to keep the user informed about what is happening inside the program, a programmer may choose to include outputs

Whats a trace table?

Trace tables enable the variable values in an algorithm to be recorded as the algorithm is dry run. For example, using the times table algorithm below, a table could be created showing the value of the variables num and number as the program runs:

Whats the efficiency of algorithms?

Efficiency looks at how much time it takes to run a particular algorithm and how much space is needed.

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