Letterpress Solver

Letterpress.scala

val letterSupply = args.reduce(_ + _)
                       .groupBy(_.toLower)
                       .mapValues(_.length)

scala.io.Source.fromFile("letterpress.words")
               .getLines
               .filter(word => word.forall(c => letterSupply.get(c).exists(_ >= word.count(_ == c))))
               .toList
               .sortBy(_.length)
               .foreach(System.out.println(_))

scala Letterpress.scala abcde fghij klmno pqrst uvwxy