Need more clarity on iterators

#1

Need more clarity on iterators like why we use them and how they make our programe simple and efficient

#2

C++ Iterators

Iterators are just like pointers used to access the container elements.

Important Points:

  • Iterators are used to traverse from one element to another element, a process is known as iterating through the container .
  • The main advantage of an iterator is to provide a common interface for all the containers type.
  • Iterators make the algorithm independent of the type of the container used.
  • Iterators provide a generic approach to navigate through the elements of a container.

Advantages:
It is convenient to use iterators rather than using a subscript operator[] to access the elements of a container. If we use subscript operator[] to access the elements, then we need to keep the track of the number of elements added at the runtime, but this would not happen in the case of an iterator.

#3

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