What are the different types of iterators in STL?

What are the different types of iterators in STL?

In STL, there are several types of iterators: input, output, forward, bidirectional, and random access. Each serves different purposes.

Can you explain the difference between forward and bidirectional iterators?

Sure! Forward iterators can only move in one direction (forward), while bidirectional iterators can move both forward and backward.

What about random access iterators?

Random access iterators allow direct access to any element in the container, similar to pointers, enabling fast access and manipulation.

Which STL containers support random access iterators?

Containers like vector, deque, and array support random access iterators, allowing efficient element access.

Are there any performance considerations when using different types of iterators?

Yes, performance can vary. Random access iterators are generally faster for accessing elements, while others may have overhead depending on their capabilities.