scala字符串

package test33
import scala.collection.mutable.ListBuffer

import scala.io.Source
case class Student(name:String,yumen:Int,shuxue:Int,yingyu:Int,total:Int,ang:Int)

object test {
  def main(args: Array[String]): Unit = {
    val list=ListBuffer[Student]()
    val it=Source.fromFile("score.txt").getLines().drop(1)
    val shuxuezongfen=0
    while (it.hasNext){
      val content=it.next()
      val arr=content.split("，")
      val name=arr(0)
      val yuwen=arr(1).toInt
      val shuxue=arr(2).toInt
      val yingyu=arr(3).toInt
      val total=yuwen+shuxue+yingyu
      val avg=total / 3
      list+=Student(name,yuwen,shuxue,yingyu, total,avg )
      println("数学平均分",shuxuezongfen/list.length)
      val orderList=list.sortWith((a,b)=>a.total>b.total).slice(0,3)


      orderList.foreach(s=>println(s"姓名：${s.name},总分：${s.total}"))
      list.sortWith((a,b)=>a.shuxue>b.shuxue)
        .foreach(s=>println(s"姓名：${s.name},数学：${s.shuxue},总分:${s.total}"))
    }
  }

}