scala实现word count

    val strList = List(
      "java scala",
      "hello java",
      "hello scala from java",
      "hello spark from scala",
      "hello world");
    
    implicit val ord = Ordering[Int].reverse

    val resultMap = strList.flatMap(words => words.split(" "))

      .groupBy(word => word)
      .map(kv => (kv._1, kv._2.size))
      .toList
      .sortBy(_._2);
     
    println(resultMap);