If you are asking which one is better, then certainly use iterators. If possible, use the same iterators that comes with the programming language. If you use C++, properly inherit from std::iterator. If you use Java, implements java.util.Iterator.

If you are asking which one is better, then certainly use the one with iterators. If possible, use the same iterators that comes with the programming language. If you use C++, properly inherit from std::iterator. If you use Java, implements java.util.Iterator.