Recursion is a programming technique that allows a function to call itself. It is a powerful tool that can be used to solve complex problems by breaking them down into simpler sub-problems. Recursion is often used in computer science and mathematics, but it can also be used in other areas such as web development.
Recursion is a way of solving a problem by breaking it down into smaller sub-problems. The idea is to break the problem down into smaller and smaller pieces until it can be solved. This is done by defining a base case, which is the simplest version of the problem that can be solved, and then defining a recursive case, which is a more complex version of the problem that can be solved by breaking it down into smaller pieces.
For example, let’s say we want to calculate the factorial of a number. The factorial of a number is the product of all the numbers from 1 to that number. To calculate the factorial