What are some examples of space complexity in C++?

Can you explain space complexity in C++ with some examples?

Sure! Space complexity measures the amount of memory an algorithm uses relative to the input size. For example, a simple array allocation in C++ has a space complexity of O(n), where n is the number of elements.

What about recursive functions? How do they affect space complexity?

Great question! Recursive functions can have a space complexity of O(n) due to the call stack. Each recursive call adds a new layer to the stack, consuming additional memory.

Can you give me an example of a recursive function and its space complexity?

Certainly! Consider the Fibonacci sequence. A naive recursive implementation has a space complexity of O(n) because it makes n recursive calls before reaching the base case.

Are there ways to optimize space complexity in C++?

Yes! You can use iterative solutions instead of recursion, or optimize data structures to use less memory, like using dynamic programming.