gbdaitokai2014winter order

order.scala

import java.util.Random

val s = List(
  "Koutarou  Ishizaki",
  "ryosms",
  "Takafumi Yoshida",
  "英吉",
  "Katsuhiro  Masaki",
  "山本裕介",
  "Tomohiko Himura",
  "Ryuji IWATA"
) 
val l = List(
  "もじゃ変",
  "あべさんはアップを始めています",
  "きよくらならみ" 
) 

val r = new Random
val order = (l: List[String]) => (l.sortWith((_, _) => r.nextInt(2) == 1).zipWithIndex.map(s => (s._2 + 1, s._1)))

println("Short:")
println(order(s))
println("Long:")
println(order(l))

Short:
List((1,Ryuji IWATA), (2,Takafumi Yoshida), (3,Katsuhiro Masaki), (4,ryosms), (5,山本裕介), (6,英吉), (7,Koutarou Ishizaki), (8,Tomohiko Himura))
Long:
List((1,きよくらならみ), (2,あべさんはアップを始めています), (3,もじゃ変))