HelloWorld.scala

import java.util.Random

object HelloWorld extends App {
  println(randomString(748171626L) +" "+ randomString(31718954746L))
  println(randomString2(748171626L) +" "+ randomString2(31718954746L))

  def randomString(i :Long) :String = {
    val rand = new Random(i)
    val sb = new StringBuilder()
    rs(rand.nextInt(27))
    def rs(k :Int)  {
      if (k == 0) return
      else {
        sb.append(('`' + k).toChar)
        rs(rand.nextInt(27))
      }
    }
    sb.toString
  }

  def randomString2(i :Long) :String = {
    val rand = new Random(i)
    def mkList(rand :Random) :List[Int] = {
      val k = rand.nextInt(27)
      if (k == 0) Nil
      else k :: mkList(rand)
    }
    ("" /: mkList(rand)){ (x, y) => x + (('`' + y).toChar.toString) }
  }
}