4.4 Recursive Functions in Python
Recursion is a powerful technique used in computer science to solve complex problems. It involves breaking down a problem into smaller, more manageable subproblems, and then solving them one by one.
This process continues until the subproblems become small enough to be solved easily. This method is often used in programming, and in Python, it is accomplished using functions that call themselves. These functions are known as recursive functions and are particularly useful when dealing with problems that have a recursive structure, such as those in graph theory and data structures.
By breaking down a complex problem into smaller subproblems, recursion allows us to solve problems that would be impossible to solve otherwise.
4.4.1 Understanding Recursion
Let's begin with a straightforward example: calculating the factorial of a number. The factorial of a number n is a fundamental concept in mathematics that represents the product of all positive...
