What are the different types of iterators in C++ STL?

What are the different types of iterators in C++ STL?

In C++, the Standard Template Library (STL) provides several types of iterators: input, output, forward, bidirectional, and random access. Each type has its own characteristics and use cases.

Can you explain the difference between bidirectional and random access iterators?

Sure! Bidirectional iterators can move both forward and backward through a container, while random access iterators allow direct access to any element in the container, similar to array indexing.

What are some examples of containers that use these iterators?

Bidirectional iterators are used in containers like list and set, while random access iterators are used in vector and deque.

How do I choose the right iterator for my needs?

Choosing the right iterator depends on the operations you need to perform. If you need to traverse in both directions, use a bidirectional iterator. If you need fast access to elements, go for a random access iterator.