Random begining index iterator for HashSet
- by funktku
I use HashSet for add(); remove(); clear(); iterator(); methods. So far everything worked like a charm. However, now I need to fulfill a different requirement.
I'd like to be able to start iterating from a certain index. For example, I'd like the following two programs to have same output.
Program 1
Iterator it=map.iterator();
for(int i=0;i<100;i++)
{
it.next();
}
while (it.hasNext())
{
doSomethingWith(it.next());
}
Program 2
Iterator it=map.iterator(100);
while (it.hasNext())
{
doSomethingWith(it.next());
}
The reason I don't want to use the Program 1 is that it creates un-neccesary overhead. From my researchs, I couldn't not find a practical way of creating an iterator with begining index.
So, my question is, what would be a good way to achieve my goal while minimizing the overheads?
Thank you.
