Bespiel-Programm (in Java)

int start = 27;
System.out.println ("start: " + start);
while (x > 1) {
  if (0 == x % 2) { 
    x = x / 2;
  } else { 
    x = 3 * x + 1;
  }
  System.out.println (x + " ");
}