WordCount实现

Answer 1

提问者 Hataketed 2020-02-09 00:05:43

object FileApp extends App {

  var file: BufferedSource = _

  try {

    file = Source.fromFile("/xxx/test.txt")

    val txt = file.mkString.trim

    println(txt)

    List(txt)

      .flatMap(_.split(","))

      .groupBy(x => x)

      .foreach(x => println(s"${x._1} : ${x._2.length}"))

  } catch {

    case e: Exception => e.printStackTrace()

  } finally {

    file.close()

  }

}