@Override
public Position<E> right(Position<E> v)
throws InvalidPositionException, BoundaryViolationException {
if (!hasRight(v)) {
throw new BoundaryViolationException("No right child");
}
BTPos<E> pos = checkPosition(v);
return T.get(2 * pos.index() + 1);
}
@Override
public Position<E> parent(Position<E> v)
throws InvalidPositionException, BoundaryViolationException {
if (isRoot(v)) {
throw new BoundaryViolationException("No parent for root.");
}
BTPos<E> pos = checkPosition(v);
return T.get(pos.index() / 2);
}
@Override
public boolean isRoot(Position<E> v) throws InvalidPositionException {
BTPos<E> pos = checkPosition(v);
return pos.index() == 1;
}
@Override
public boolean hasRight(Position<E> v) throws InvalidPositionException {
BTPos<E> pos = checkPosition(v);
return 2 * pos.index() + 1 <= size();
}