How can I use recursion in C++ algorithms?

How can I use recursion in C++ algorithms?

Recursion in C++ allows a function to call itself to solve problems. What specific algorithm are you interested in?

Can you give me an example of a recursive function?

Sure! A classic example is the factorial function. Here's how it looks in C++:

int factorial(int n) {
    if (n <= 1) return 1;
    return n * factorial(n - 1);
}

What are the advantages of using recursion?

Recursion can simplify code and make it easier to read. It's particularly useful for problems that can be divided into smaller subproblems, like tree traversals.

Are there any downsides to using recursion?

Yes, recursion can lead to high memory usage due to the call stack, and it may cause stack overflow for deep recursions. Iterative solutions can sometimes be more efficient.