Is there any complexity difference between a std::vector used as a stack and a std::stack?

Question

Like the title asks Is there any time or space difference between a std::vector used as a stack and a std::stack ?

Answer 1

A std::stack wraps another container. If the backing container of your stack is a std::vector, then no, there is no difference.

The default backing container is however a std::deque, which can have different storage and timing behaviour

See std::stack for details