scalaq.scala

scalaq.scala

  def encodePair(pair: (Char, Char)): (Char, Char) = {    
    (findLetterInSquare(pair._1), findLetterInSquare(pair._2)) match {    
      case ((A, B), (A, D))  => (indexToLetter((A, (B+1)%5)), indexToLetter((A, (D+1)%5))) // same row    
      case ((A, B), (C, B))  => (indexToLetter(((A + 1)%5, B)), indexToLetter(((C+1)%5, B))) // same column    
      case ((A, B), (C, D)) => (indexToLetter((A, D)),indexToLetter((C, B)))    
    }    
  }