Iterator: It is an object that can be used to iterate over the elements in a collection. It behaves like pointers that can access the information in a container. The content of the vector can be manipulated or printed using an Iterator. Reverse iterator: Reverse iterator works in reverse order of the bidirectional or random-access iterator. The first element is considered as the last element and the last element is considered as the first element in the container. The “++” operator makes the “reverse iterator” to move backward and the “--” operator makes “reverse iterator” to move forward. Array, map, multimap, set, multiset, deque, list, vector uses reverse iterator. The member functions of the “reverse iterator” are “rbegin()” and “rend()”. All the classes in the container uses “rbegin()” and “rend()” member functions.

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Chapter 17.2, Problem 17.10CP

Program Plan Intro

Iterator:

It is an object that can be used to iterate over the elements in a collection.

It behaves like pointers that can access the information in a container.

The content of the vector can be manipulated or printed using an Iterator.

Reverse iterator:

Reverse iterator works in reverse order of the bidirectional or random-access iterator.

The first element is considered as the last element and the last element is considered as the first element in the container.

The “++” operator makes the “reverse iterator” to move backward and the “--” operator makes “reverse iterator” to move forward.

Array, map, multimap, set, multiset, deque, list, vector uses reverse iterator.

The member functions of the “reverse iterator” are “rbegin()” and “rend()”.

All the classes in the container uses “rbegin()” and “rend()” member functions.

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