scala 词频统计

package com.fuxi.zji

object Ten4 {
  def main(args: Array[String]): Unit = {
    val words = """Scala combines object-oriented and functional programming in one concise, high-level language. Scala's static types help avoid bugs in complex applications, and its JVM and JavaScript runtimes let you build high-performance systems with easy access to huge ecosystems of libraries."""
    val w = Array(words).toBuffer
    println(w)
    println("======================================")
    val x = w.flatMap(_.split(" ")).map((_,1)).groupBy(_._1).map(t=>(t._1,t._2.size))
    x.foreach(kv=>println(kv._1,kv._2))
    println(x)
  }
}