How do I convert a normal recursive function to a tail recursive function?

How do I convert a normal recursive function to a tail recursive function?

To convert a normal recursive function to a tail recursive function, you need to ensure that the recursive call is the last operation in the function.

Can you give me an example of a normal recursive function?

Sure! A classic example is the factorial function:

def factorial(n):
    if n == 0:
        return 1
    else:
        return n * factorial(n - 1)

How would that look in tail recursion?

In tail recursion, you can use an accumulator to hold the result:

def tail_recursive_factorial(n, accumulator=1):
    if n == 0:
        return accumulator
    else:
        return tail_recursive_factorial(n - 1, n * accumulator)

What are the benefits of using tail recursion?

Tail recursion can optimize memory usage and prevent stack overflow errors, as some compilers can optimize tail calls.