score

package score

import java.io.FileWriter

object score01 {
  case class Stu(name:String, yuwen:Double, shuxue:Double,yingyu:Double)

  def main(args: Array[String]): Unit = {
    // 0. 创建一个可变List
    val stuList = scala.collection.mutable.ListBuffer[Stu]()

    // 1. 读入文件 迭代器
    val lines = scala.io.Source.fromFile("score.txt").getLines()

    lines.next() // 跳过第一行

    while(lines.hasNext){
      val line = lines.next()
      // 字符串拆分
      val li = line.split("，")
      stuList += Stu(li(0), li(1).toDouble, li(2).toDouble, li(3).toDouble)
    }
    // 读入数据结束
    println("读入数据结束")
    println("计算结束，开始写入")
    // 写结果
    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
      fileWriter.write(s"${stu.name}, 总分: $total; 平均分: $avg\n")
    })
    fileWriter.close()
  }
}