We explain what a computer algorithm is and what it is for. Characteristics and parts of an algorithm. Practical examples.
In computing , an algorithm is a sequence of sequential instructions , thanks to which certain processes can be carried out and respond to certain needs or decisions. These are ordered and finite sets of steps, which allow us to solve a problem or make a decision .
The algorithms do not have to do with programming languages , since the same algorithm or flowchart can be represented in different programming languages , that is, it is an ordering prior to programming .
Seen this way, a program is nothing more than a complex series of algorithms ordered and coded by means of a programming language for later execution on a computer .
Algorithms are also common in mathematics and logic , and are the basis of making user manuals, instruction booklets, etc . Its name comes from the Latin algorithmus and this last name of the Persian mathematician Al-Juarismi. One of the best known algorithms of mathematics is that attributed to Euclid, to obtain the greatest common divisor of two positive integers, or the so-called “Gaussian method” to solve systems of linear equations.
Every algorithm must consist of the following parts:
Simply put, an algorithm serves to solve a problem step by step . It is a series of ordered and sequenced instructions to guide a particular process.
In Computer Science , however, algorithms constitute the skeleton of the processes that will then be encoded and programmed to be performed by the computer.
There are four types of computer algorithms:
The algorithms have the following characteristics:
A couple of possible examples of algorithm are:
Algorithm to choose some party shoes :
YES: (go to step 5) – NO: (go back to step 3)
YES: (go to step 6) – NO: (go back to step 3)
YES: (go to step 7) – NO: (go back to step 3)
Algorithm to calculate the area of a right triangle :
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