Can you explain advanced examples of C++ vector iterators?

Can you explain advanced examples of C++ vector iterators?

Sure! In C++, vectors are dynamic arrays, and iterators allow you to traverse them. An advanced example is using reverse iterators.

How do reverse iterators work with vectors?

Reverse iterators traverse the vector from the end to the beginning. You can use rbegin() and rend() to access them.

Can you show me a code snippet using reverse iterators?

Absolutely! Here's a simple example:

#include <iostream>
#include <vector>

int main() {
    std::vector<int> vec = {1, 2, 3, 4, 5};
    for (auto rit = vec.rbegin(); rit != vec.rend(); ++rit) {
        std::cout << *rit << ' ';
    }
    return 0;
}

What about using iterators with algorithms like sort?

You can use iterators with algorithms like std::sort to sort a vector. For example:

std::sort(vec.begin(), vec.end());