ReverseWords.scala

import java.io.FileOutputStream
import scala.io.Source

object ReverseWords {
  def solve(str:String) = str.split(' ').reverse.mkString(" ")

  def main(args: Array[String]): Unit = {
    val INPUT = "B-large-practice.in"
    val OUTPUT = INPUT.takeWhile(_ != '.') + ".out"
    val isConsole = false

    val itr = Source.fromFile(INPUT).getLines()
    val stream = if (isConsole) Console.out else new FileOutputStream(OUTPUT)
    try {
      Console.withOut(stream) {
        val sets = itr.next().toInt
        (1 to sets).foreach { set =>
          println(f"Case #$set: ${solve(itr.next())}")
        }
      }
    } finally {
      stream.flush()
      if (!isConsole) stream.close()
    }
  }
}