What are some examples of collections in C++?

What are some examples of collections in C++?

In C++, collections are typically implemented using the Standard Template Library (STL). Examples include vectors, lists, and maps.

Can you explain how a vector works?

Sure! A vector is a dynamic array that can grow in size. It allows random access to elements and provides methods for adding, removing, and accessing elements.

What about lists? How are they different from vectors?

Lists in C++ are implemented as doubly linked lists. Unlike vectors, they allow efficient insertions and deletions but do not provide random access.

When should I use a map instead of a vector?

You should use a map when you need to associate keys with values, allowing for fast retrieval based on keys, while vectors are better for ordered collections.