I must implement all methods of collection using iterator only.
My iterator:
class CustomIterator<T> implements Iterator {
private int index;
@Override
public boolean hasNext() {
return index < data.size();
}
@Override
public T next() {
return (T)data.get(index);
}
public void remove () {
data.remove(index);
}
}
data, it is arraylist in my own collection.
For example, method size implement in my code:
public class CustomCollections<T> implements Collection {
public ArrayList<T> data;
public int size() {
CustomIterator iterator = new CustomIterator<>();
int length= 0;
while (iterator.hasNext()) {
length++;
}
return length;
}
}
But i don't know, how to implement method .add?
Please help me in that problem.
