How do I merge two containers efficiently with std::vector in multithreaded code?

Merging two containers efficiently in C++ using std::vector can be particularly important when working with multithreaded code. This approach ensures that you handle data safely and efficiently while maximizing performance. Below is an example of how to merge two vectors using multiple threads to speed up the process. In the example, we divide the merging process between multiple threads to optimize the efficiency of the operation.