fby2017-ticket-scalalaz.scala

val users = Vector(
  "@demyanam1",
  "@CipHuK",
  "@sergey_samoylov",
  "@ermakovolegs",
  "@wouzar",
  "@_sashashakun",
  "@myBloodyScala",
  "@lmnet89",
  "@laughedelic",
  "@noviiden",
  "@AlexTyth",
  "@danich3g",
  "@yelbota",
  "@ledostuff",
  "@antonshwab",
  "@titantins",
  "@headstorn",
  "@andreyshikov"
)

val random = new scala.util.Random(users.hashCode)

Seq
  .fill(users.length)(random.nextInt(users.length))
  .distinct
  .map(users.apply)
  .zipWithIndex
  .foreach {
    case (name, index) =>
      println(s"${index + 1}. $name")
  }