STL Containers – What are the types of STL containers?

Answer:

A Standard Template Library (STL) is a library of container templates approved by the ANSI committee for inclusion in the standard C++ specification. We have various types of STL containers depending on how they store the elements.

Queue, Stack: These are the same as traditional queue and stack and are called adaptive containers.
Set, Map: These are basically containers that have key/value pairs and are associative in nature.
Vector, deque: These are sequential in nature and have similarities to arrays.