How do I use reverse iterators with std::vector in C++?

How do I use reverse iterators with std::vector in C++?

You can use reverse iterators with std::vector by calling the rbegin() and rend() methods. For example:

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

This will print the elements in reverse order.

What is the difference between rbegin() and rend()?

rbegin() returns a reverse iterator pointing to the last element of the vector, while rend() returns a reverse iterator pointing to one before the first element.

Can I use reverse iterators with other STL containers?

Yes, reverse iterators can be used with other STL containers like std::list, std::deque, and std::array, as they all support the same iterator interface.

Are there any performance considerations when using reverse iterators?

Generally, reverse iterators have similar performance to regular iterators. However, always consider the specific container's characteristics and access patterns.