How can I improve the performance of my recursive function?

How can I improve the performance of my recursive function?

You can improve performance by using techniques like memoization, tail recursion, or converting to an iterative approach.

What is memoization and how does it work?

Memoization is a technique where you store the results of expensive function calls and return the cached result when the same inputs occur again.

Can you give me an example of memoization in Python?

Sure! Here's a simple example:

def fibonacci(n, memo={}):
    if n in memo:
        return memo[n]
    if n <= 1:
        return n
    memo[n] = fibonacci(n-1, memo) + fibonacci(n-2, memo)
    return memo[n]

What about tail recursion? How is it different?

Tail recursion is a specific case where the recursive call is the last operation in the function. It can be optimized by the compiler to avoid increasing the call stack.