An algorithm is just a set process to calculate something. Once there is something new to calculate - a new algorithm will usually be born. Usually new things

An algorithm is just a set process to calculate something. Once there is something new to calculate - a new algorithm will usually be born. Usually new things that need to be calculated require new calculation steps. These steps chained together into a process is an algorithm. After achieving a first working version, optimizations are usually put into place. for example chaining previously written algorithms. Hope this helps.