Concepts - Algorithm

Algorithm:

• A procedure or formula for solving a problem
• A sequence of unambiguous instructions for solving a problem, i.e., for obtaining a required output for any legitimate input in a finite amount of time.

Use of Algorithm:

Algorithms is needed to generate correct output in finite time in a given constrained environment

• Achieve Correctness of output
• Finite time
• For Better Prediction

Ways of Writing a Algorithm:

• Natural Language
• Pseudo Codes
• Flowcharts.. etc,..

Example for Algorithm:

Let's consider a problem of adding 2 integer numbers

The steps involved :

• Start
• Read the value of A and B
• Add A and B and store in SUM
• Display SUM
• Stop

The above 5 steps would eventually will give us the expected result.

Logical Algorithm.

Let's consider a problem of adding two number.

The steps involved :

• BEGIN
• Read A, B
• SUM = A + B
• Print SUM
• END

The above 5 steps would eventually will give us the expected result.