sentence mangler

220E.scala

def getNonLetters(s:String): List[Int] = s.map(_.isLetter).zipWithIndex.filter(_._1==false).map(_._2).toList

def getUpperCase(s:String): List[Int] = s.map(_.isUpper).zipWithIndex.filter(_._1==true).map(_._2).toList

def makeLetters(s:String): List[Char] = s.toList.filter(_.isLetter == true)

def mkUpper(upps:List[Int], s:String): String = {
    def loop(is:List[Int], s:String): String = {
        is match {
            case Nil => s
            case x::xs => loop(xs, s.slice(0,x)+s(x).toUpper+s.slice(x+1,s.length))
        }
    }
    loop(upps, s)
}

def addPunc(punc:List[Int], orig:String, s:String): String = {
    def loop(is:List[Int], orig:String, s:String): String = {
        is match {
            case Nil => s
            case x::xs => loop(xs, orig, s.slice(0,x)+orig(x)+s.slice(x,s.length))
        }
    }
    loop(punc, orig, s)
}

def arrange(s:String): String = {
    val nons = getNonLetters(s)
    val upps = getUpperCase(s)
    mkUpper(upps, s.toLowerCase.split(" ").map(makeLetters(_).sorted).toList.map(_.mkString).mkString(" "))
}