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Introduced in CPP98, CPP Iterators provide sequential access to elements in containers like vectors, lists, and maps. They enable traversing collections without exposing underlying implementation details, supporting a consistent traversal interface across various containers.

Standard CPP Iterators include forward_iterator, bidirectional_iterator, and random_access_iterator. These iterators are central to the Standard Template Library (STL) and support algorithms like sort, find, and copy.

https://en.cppreference.com/w/cpp/iterator