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package bjc.utils.data;
import java.util.Iterator;
public class CircularIterator<E> implements Iterator<E> {
private Iterable<E> source;
private Iterator<E> curr;
private E curElm;
private boolean doCircle;
public CircularIterator(Iterable<E> src, boolean circ) {
source = src;
curr = source.iterator();
doCircle = circ;
}
public CircularIterator(Iterable<E> src) {
this(src, true);
}
@Override
public boolean hasNext() {
// We always have something
return true;
}
@Override
public E next() {
if(!curr.hasNext()) {
if(doCircle) {
curr = source.iterator();
} else
return curElm;
}
curElm = curr.next();
return curElm;
}
@Override
public void remove() {
curr.remove();
}
}
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