public void bombAllEnemies()
{
  while (hasMoreBombs())
    bombNextEnemy();
}

private void bombNextEnemy()
{
  int row = 0;
  while (!isEnemyAhead())
  {
    down();
    row++;
  }
  up();
  row--;
  forward();
  dropBomb();
  while (row > 0)
  {
    up();
    row--;
  }
}

public static int countCookies(CookieJar jar) {
  CookieJar temp = new CookieJar();
  int count = 0;
  //move all cookies from jar to temp
  while (!jar.isEmpty())
  {
    temp.addCookie(jar.removeCookie());
    count++;
  }
  //move all cookies back to jar
  while (!temp.isEmpty())
    jar.addCookie(temp.removeCookie());
  return count;
}