java - 使用 Double 列表对相应的 String 列表进行排序

Question

我正在创建一个概率结果模拟器，其中的信息是从 .csv 文件输入的。该文件包含两支球队、他们的失利、获胜、排名和之前的比赛结果。最后，他们的“信心”等级被放入一个 ArrayList 中，两支球队都被放入另一个 ArrayList 中(取决于谁获胜，该团队将首先被放入 ArrayList 中)。所以每个对应的两个团队都有一个置信度分数。到目前为止，这是我的代码:

import javafx.application.Application;
import javafx.scene.Scene;
import javafx.stage.Stage;
import javafx.scene.layout.*;
import javafx.scene.control.*;
import javafx.stage.FileChooser;
import javafx.geometry.*;
import java.util.*;
import java.io.*;

public class POS extends Application
{
   private ArrayList<Double> confidenceList = new ArrayList<>();
   private ArrayList<String> cityList = new ArrayList<>();
   private BorderPane pane = new BorderPane();
   private Button runBtn = new Button("Run");
   @Override
   public void start(Stage stage)
   {


      VBox vBox = new VBox(20);
      vBox.setPadding(new Insets(15));
      Button selectBtn = new Button("Select File");
      selectBtn.setStyle("-fx-font: 22 arial; -fx-base: #b6e7c9;");
      vBox.getChildren().add(selectBtn);

      selectBtn.setOnAction(e->
      {
         FileChooser fileChooser = new FileChooser();
         fileChooser.setTitle("Open Resource File");
         FileChooser.ExtensionFilter extFilter = 
                        new FileChooser.ExtensionFilter("TEXT files (*.csv)", "*.CSV", ".xlsv", ".XLSV");
                fileChooser.getExtensionFilters().add(extFilter);
         File file = fileChooser.showOpenDialog(stage);

            run(file);


      });

      RadioButton weekBtn = new RadioButton("Current Week");  
      RadioButton seasonBtn = new RadioButton("Entire Season");

      runBtn.setStyle("-fx-font: 22 arial; -fx-base: #b6e7c9;");


      weekBtn.setSelected(true);
      seasonBtn.setDisable(true);
      vBox.getChildren().add(weekBtn);
      vBox.getChildren().add(seasonBtn);
      vBox.getChildren().add(runBtn);

      pane.setLeft(vBox);
      Scene scene = new Scene(pane, 500, 200);
      stage.setScene(scene);
      stage.setTitle("POS");
      stage.show();
   }
   public void run(File file)
   {
      runBtn.setOnAction(e->
      {
         try
         {
            Scanner input = new Scanner(file);
            input.nextLine(); 
            sortFile(file, input);

            input.close();
         }

         catch (InputMismatchException ex)
         {
            System.out.println("Error you seem to have typed the wrong type of file");
         }
         catch(IOException ex)
         {
            System.out.println("Error, file could not be found");
         }


      });
   }
   public void sortFile(File file, Scanner input)
   {
      if (!input.hasNext())
      {
         sortArrays(confidenceList, cityList);
      }
      else
      {
      String strList = Arrays.toString(input.nextLine().split("\t"));
      String[] arrList = strList.split(",");

      int homeRank = Integer.parseInt(arrList[1]);

      int roadRank = Integer.parseInt(arrList[6]);
      Random r = new Random();

      int lowestTeamRank = Math.abs(homeRank - roadRank);

      double numForHomeTeam = 0;
      double numForRoadTeam = 0;
      if (homeRank < roadRank)
      {
         numForHomeTeam = ((r.nextInt(lowestTeamRank) - r.nextInt(2)) + (getLastGameOutcome(arrList[4])* r.nextInt(3))) - getWinPct(arrList[2], arrList[3]);

         numForRoadTeam = ((r.nextInt(roadRank) + r.nextInt(2)) + (getLastGameOutcome(arrList[9])* r.nextInt(3))) - getWinPct(arrList[7], arrList[8]);
      }

      else if (homeRank > roadRank)
      {
         numForHomeTeam = ((r.nextInt(homeRank) - r.nextInt(2)) + (getLastGameOutcome(arrList[4])* r.nextInt(3))) - getWinPct(arrList[2], arrList[3]);

         numForRoadTeam = r.nextInt(lowestTeamRank) - r.nextInt(2) + getLastGameOutcome(arrList[9])* r.nextInt(3) - getWinPct(arrList[7], arrList[8]);
      }



      double confidenceRate = Math.round(Math.abs(numForHomeTeam - numForRoadTeam));
      confidenceList.add(confidenceRate);
      if (numForHomeTeam < numForRoadTeam)
      {
          cityList.add(arrList[0]);
          cityList.add(arrList[5]);
      }
      else if (numForHomeTeam > numForRoadTeam)
      {
         cityList.add(arrList[5]);
         cityList.add(arrList[0]);
      }
      else
      {
         cityList.add(arrList[0]);
         cityList.add(arrList[5]);
      }

      sortFile(file, input);
      }
   }

   public int getLastGameOutcome(String lastGame)
   {
      if (lastGame.charAt(0) == 'W')
      {
         return (int)(Math.random() * 3);
      }

      else
      {
         return (int)(Math.random() * -3);
      }  
   }

   public double getWinPct(String wins, String losses)
   {
       double newWins = Double.parseDouble(wins);
       double newLosses = Double.parseDouble(losses);
       return newWins / (newWins + newLosses);
   } 

   public void sortArrays(ArrayList<Double> doubleArray, ArrayList<String> stringArray)
   {


   } 

}

我希望它准确地像这样的示例:

ArrayList with confidence ranks: 2, 50, 20, 30, etc.
ArrayList with teams: Chicago, Detroit, Atlanta, NY, etc.

芝加哥和底特律对应2，亚特兰大和纽约对应50，排序后应该是这样的:

50, 30, 20, 2
Atlanta, NY......

我该如何实现？

Answer 1

推荐的方法是按照 @Kevin Esche 的建议构建一个代表您的实体的对象。

在这种情况下，您将拥有一个 Team 对象，其属性在 CSV 文件中表示。然后您将让您的 Team 对象实现 Comparable界面。

此接口(interface)的目的是为您提供对 Team 对象集合进行排序的方法。完成此操作后，您只需执行 Collections.sort(myTeamCollection) 即可对集合进行排序。

这应该允许代码更容易理解，并且程序中的困惑更少。