public class Lister {
    public static void main(String[] args) {
        // a)
        System.out.println("Oppgave a:");
        int[] liste = new int[10];
        for (int i = 0; i < liste.length; i++) {
            liste[i] = i;
        }
        for (int i : liste) {
            System.out.println(i);
        }
        
        // b)
        System.out.println("\n\nOppgave b:");
        for (int i = liste.length - 1; i >= 0; i--) {
            System.out.println(liste[i]);
        }

        // c)
        System.out.println("\n\nOppgave c:");
        int sum = 0;
        for (int i : liste) {
            sum += i;
            System.out.println("i: " + i + ", sum: " + sum);
        }
        
        // d)
        System.out.println("\n\nOppgave d:");
        String tekst = "";
        for (int i : liste) {
            tekst += i;
            System.out.println(tekst);
        }
       
        // e)
        System.out.println("\n\nOppgave e:");
        String[] stjerner = new String[10];
        for (int i = 0; i < stjerner.length; i++) {
            stjerner[i] = "";
            for (int j = 0; j < i + 1; j++) {
                stjerner[i] += "*";
            }
        }
        for (String s : stjerner) {
            System.out.println(s);
        }
    }   
}