import scala.io.Source

object zad3 extends App {

    def histogram(max: Int): Unit = {
        val input = Source.fromFile("ogniem.txt").getLines

        val formattedInput = input.foldLeft(Seq.empty[Seq[Char]])(
            (acc: Seq[Seq[Char]], curr: String) =>
                acc :+ curr.filter(_.isLetter).toLowerCase.toList
        ).flatten

        val groupedInput = formattedInput.groupBy(identity).map(n => (n._1, n._2.size)).toList.sorted

        groupedInput.foreach(n => n._2 match {
            case num if (num > max) => println(n._1 + " -> " + "*"*max)
            case num => println(n._1 + " -> " + "*"*n._2)
        })
    }

    histogram(200)

}