function likes(names) {
  // TODO
  if (names.length === 0) {
    return "no one likes this"
  }
  if (names.length === 1) {
    return names[0]+" likes this"
  }
  if (names.length === 2) {
    return names[0]+" and "+names[1]+" like this"
  }
  if (names.length === 3) {
    return names[0]+", "+names[1]+" and "+names[2]+" like this"
  }
  return names[0]+", "+names[1]+" and "+(names.length - 2) +" others like this"
}