Scala编程实验三

import scala.io.Source
object test1 {
  def main(args: Array[String]):Unit= {
    val phone = Source.fromFile("test.txt")
    val lineIterator = phone.getLines().toList
    print(lineIterator)
    var man = 0
    for (line <- lineIterator) {
      if(line.contains("男")) man+=1
    }
//    print("共有男性"+(man)+"名。")
  }
}

import java.util.Scanner
import scala.io.Source
object count_words {
  def main(args: Array[String]): Unit = {
    val text = Source.fromFile("words.txt")
    val lines = text.getLines().toList
    //数据转换
    val mappedWords = lines.flatMap(_.split(" ").map(_.trim)).filterNot(_
      .isEmpty).map((_,1))
    //根据数据进行分组
    val groupedWords: Map[String, List[(String, Int)]] = mappedWords.groupBy(tuple=>tuple._1)
    //每组进行数据计算
    val result = groupedWords.map(tuple=>{
      //获得Word单词（key）
      val word = tuple._1
      //计算该Word对应的数量（value）
      val count = tuple._2.map(t=>t._2).sum
      //返回结果
      (word,count)
    })
    println(result.toList)
  }
}