Caeser Cipher Scala

gistfile1.scala

def printChar(i: Int) = print(i.toChar)

def decipherChar(c: Char, n: Int) = c match {
  case x if x < 97 || x > 122 => printChar(x)
  case x if x - n < 97 => printChar(122 - (97 - (x -n)) + 1)
  case _ => printChar(c - n)
}

def decipher(str: String, n: Int) = str.toLowerCase.toArray.foreach(decipherChar(_, n))

def bruteDecipher(str: String) = (1 to 25).foreach { i: Int =>
  println("Deciphering using shift of: " + i)
  decipher(str, i)
  println("\n")
}