Score

任务

1.读入文件 2.计算 （1）每个同学的总分 （2）每个同学的平均分 （3）每个科目的最高分 ...

package score.txt

object score01 {
  def main(args:Array[String]): Unit = {
    val content = scala.io.Source.fromFile("score.txt").mkString
    println(content)
  }

}

ackage score.txt

object score01 {
  case class Stu(name:String,yuwen:Double,shuxue:Double,yingyu:Double)
  def main(args:Array[String]): Unit = {
    val stuList = scala.collection.mutable.ListBuffer[Stu]()
    val lines = scala.io.Source.fromFile("score.txt").getLines
   lines.next()
    while(lines.hasNext) {
      val line = lines.next()
      val li = line.split(",")
      stuList += Stu(li(0), li(1).toDouble, li(2).toDouble, li(3).toDouble)
    }
    println("读入数据结束")
    stuList.foreach(stu =>{
      val total = stu.yuwen + stu.yingyu + stu.shuxue
      val avg = total / 3
      println(s"${stu.name},总分:${total} 平均分:${avg}")
    })
    }
  }

package score.txt

object score01 {
  case class Stu(name:String,yuwen:Double,shuxue:Double,yingyu:Double)
  def main(args:Array[String]): Unit = {
    val stuList = scala.collection.mutable.ListBuffer[Stu]()
    val lines = scala.io.Source.fromFile("score.txt").getLines
   lines.next()
    while(lines.hasNext) {
      val line = lines.next()
      val li = line.split(",")
      stuList += Stu(li(0), li(1).toDouble, li(2).toDouble, li(3).toDouble)
    }
    println("读入数据结束")
    println("计算结束，开始写入")
    val fileWriter = new FileWriter("score_result.txt")
    fileWriter.write("高三19班成绩单\n");
    stuList.foreach(stu =>{
      val total = stu.yuwen + stu.yingyu + stu.shuxue
      val avg = total / 3
      fileWeiter.write(s"${stu.name},总分:${total}平均分:${avg}\n")
    })
    fileWriter.close()
    }
  }