Here's my solution (the most important line here is the 17th - by using Arrays's class method sort):
import java.util.Arrays;
import java.util.Scanner;
public class Pr_01_SortArrayOfNumbers {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
int n = scanner.nextInt();
int[] array = new int[n];
for (int i = 0; i < n; i++) {
array[i] = scanner.nextInt();
}
Arrays.sort(array);
System.out.println("Printing with foreach:");
for (Integer number : array) {
System.out.print(number + " ");
}
System.out.println();
System.out.println("*********************************");
System.out.println("Printing with for:");
for (int i = 0; i < array.length; i++) {
System.out.print(array[i] + " ");
}
}
}