How do I compare different STL iterators in C++?

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

In C++, the main types of STL iterators are: input iterators, output iterators, forward iterators, bidirectional iterators, and random access iterators.

Can you explain the differences between these iterators?

Sure! Input iterators allow reading data, output iterators allow writing data, forward iterators can read and write but only in one direction, bidirectional iterators can move both ways, and random access iterators allow jumping to any element.

How do I compare two iterators to see if they point to the same element?

You can compare two iterators using the equality operator (==). If they point to the same element, it will return true; otherwise, it will return false.

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

Yes, performance can vary. For example, random access iterators are generally faster for accessing elements compared to forward or bidirectional iterators, especially in large data structures.