https://medium.freecodecamp.org/recursion-demystified-99a2105cb871

Well, I hope that by the end of this article you will feel much more confident about what recursion is and mainly, how we can come up with a recursive solution to a problem.

How do you explain recursion to a 4 year old? This is a pretty famous interview question, and there are loads of answers available on the web. We won’t answer this question as it is too mainstream.