@SuppressWarnings("unchecked")
@Override
public Array<T> sorted(Comparator<? super T> comparator) {
final Object[] arr = toArray(this);
Arrays.sort(arr, (o1, o2) -> comparator.compare((T) o1, (T) o2));
return wrap(arr);
}
@Override
public <U> Array<T> sortBy(
Comparator<? super U> comparator, Function<? super T, ? extends U> mapper) {
final Function<? super T, ? extends U> domain = Function1.of(mapper::apply).memoized();
return toJavaStream()
.sorted((e1, e2) -> comparator.compare(domain.apply(e1), domain.apply(e2)))
.collect(collector());
}