An algorithm is a set of unambiguous and finite instructions that takes input, processes it, and produces output to solve a problem. The word algorithm originated from the name of the Persian author Abu Ja Far Muhammad bin Musa al Khwarizmi, and refers to a method that can be used by a computer. For an algorithm to be valid, it must define inputs, outputs, unambiguous steps, terminate in a finite number of steps, and be basic enough for a person to carry out with pencil and paper.

1. What is an Algorithm ?

2. The word algorithm came from the
name of a Persian author,”
Abu Ja Far Muhammad bin Musa al Khwarizmi ”

3. Algorithm refers to a method
that can be used by a computer
for the solution of a problem.

4. What is an Algorithm ?
An Algorithm is a finite set of
instructions that , if followed ,
accomplishes a particular task.

5. Conditions that an Algorithm must satisfy:
 Input
 Output
 Definiteness
 Finiteness
 Effectiveness

6. Input:
Zero or more quantities are externally supplied.
Out put:
At least one quantity should be produced.
Definiteness:
Each instruction is clear and unambiguous.

7. Finiteness:
If we trace out the instructions of an algorithm, then
for all cases the algorithm must terminate after a finite
number of steps.
Effectiveness:
Every instruction must be very basic, so that it can be
carried out by a person using only pencil and paper.

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