import java.util.Arrays;
import java.util.stream.Stream;
public class Main {
public static void main(String[] args) {
Integer[] numbers = new Integer[]{2, 7, 3, 9, 5, 4, 6, 8, 1};
Arrays.sort(numbers, Integer::compareTo);
Stream.of(numbers).forEach(System.out::println);
}
}