import java.util.Iterator;

public class Range implements Iterable<Integer> {
    int start;
    int steg;
    int slutt;

    @Override
    public Iterator<Integer> iterator() {
        return new RangeIterator();
    }

    private class RangeIterator implements Iterator<Integer> {
        int i = start;

        public boolean hasNext() {
            return i <= slutt-steg;
        }
        public Integer next() {
            int forrige = i;
            i += steg;
            return forrige;
        }
    }

    public Range(int slutt) {
        this(0, slutt);
    }

    public Range(int start, int slutt) {
        this(start, 1, slutt);
    }

    public Range(int start, int steg, int slutt) {
        this.start = start;
        this.steg = steg;
        this.slutt = slutt;
    }

    public static void main(String[] args) {
        for (int tall : new Range(2, 2, 10)) {
            System.out.println(tall);
        }
    }
}