An algorithm is a set of steps or rules that are followed in order to solve a problem or perform a task. Algorithms are used in many different fields, including computer science, mathematics, and engineering, but also SEO. In computer science, algorithms are used to perform a wide range of tasks, such as searching for information, sorting and organising data, and encrypting and decrypting data. An algorithm is typically designed to be efficient and to produce the correct output given a specific input. Algorithms can be expressed in a variety of ways, including natural language, pseudocode, and programming languages.