Swapping and reversing in STL containers

While we have traversed through adding, initializing, and refining our STL containers, there lies an equally intriguing domain where we maneuver and shuffle elements to align with our requirements. This section promises to take you on an expedition, showcasing the capabilities of the STL in repositioning and reshuffling elements while also touching upon intricate manipulations including deduplication and sampling.

Swapping – the art of interchanging

In many real-world scenarios, the need arises to interchange content between containers. Whether for load balancing, data synchronization, or other computational tasks, the STL offers the swap function, an efficient and streamlined mechanism.

For instance, the std::swap can be used with almost all STL containers. If you’ve two std::vectors and wish to exchange their contents, std::swap does the magic in constant time without any overhead of copying or moving individual elements...