DouKaku?

object Tsv {
  
  def tsv(text:String) : Unit = {
    import scala.io.Source
    val lines = Source.fromString(text).getLines
    print(lines.next)
    val data = lines.map({s:String => s.split("\t")})
    val lst = List.fromIterator(data).sort({(a:Array[String], b:Array[String]) => Integer.parseInt(a(0)) < Integer.parseInt(b(0))})
    for (line <- lst) {print(line(0) + "\t" + line(1) + "\t" + line(2) + "\t" + line(3))}
  }
  
  def main(args : Array[String]) : Unit = {
    val testData = "ID\tSurname\tForename\tAge\n1\tSato\tHanako\t17\n0\tSuzuki\tTaro\t18\n"
    tsv(testData)
  }
}