在while循环中声明字符串变量，而不是整个循环 - java

Question

我被困在我应该声明一个名为“phrase”的字符串变量的地方，它不应该一直循环。

给你一个想法，我的任务是：与选项 1 类似，除了用户在完成为第一队输入结果时输入“N”（而不是“Q”）。然后，程序输入第二个团队名称及其结果，直到输入“Q”。输出两条语句，例如选项 1 中的语句，然后是第三条语句，说明哪个团队排名第一（基于分数）

示例输入：

2
Toronto
W
W
L
O
W
O
W
N
Montreal // how would I make this appear in the same while loop?
L
L
O 
L
L
W
L
L
Q

样本输出：

Toronto has played 7 games and has earned 10 points
Montreal has played 8 games and has earned 3 points
Toronto is in first place by 7 points

更新：

我的代码：

else if (option == 2){
            int counter = 0;
            int totalpoints = 0;
            String phrase = keyboard.next();
            while(go){
                String letter = keyboard.next();
                    if (letter.equals("W")){
                    pointsW++;
                    }
                    else if (letter.equals("L")){
                    pointsL++;
                    }
                    else if (letter.equals("O")){
                    pointsO++;
                    }
                    counter++;
                    if (letter.equals("N")){
                        totalpoints = pointsW + pointsL + pointsO;
                        counter--;
                        go = false;
                }
            }
            int counter2 = 0;
            int totalpoints2 = 0;
            pointsW = 2;
            pointsL = 0;
            pointsO = 1;
            String phrase2 = keyboard.next();
                while (go2){
                    String letter2 = keyboard.next();
                    if (letter2.equals("W")){
                    pointsW++;
                    }
                    else if (letter2.equals("L")){
                    pointsL++;
                    }
                    else if (letter2.equals("O")){
                    pointsO++;
                    }
                    counter2++;
                    if (letter2.equals("Q")){
                        counter2--;
                        totalpoints2 = pointsW + pointsL + pointsO;
                        go2 = false;
                    }
                }
                            System.out.println(phrase + " has played "+counter+" games and has earned "+totalpoints+" points");
                            System.out.println(phrase2 + " has played "+counter2+" games and has earned "+totalpoints2+" points");
                    if (totalpoints > totalpoints2){
                            System.out.println(phrase + " is in first place by "+(totalpoints - totalpoints2) + " points");
                    }else{
                            System.out.println(phrase2 + " is in first place by "+(totalpoints2 - totalpoints) + " points");
            }
        }

示例输入：

2
Toronto
W
W
L
O
W
O
W
N
Montreal 
L
L
O 
L
L
W
L
L
Q

问题：这是我得到的输出“蒙特利尔打了 8 场比赛并获得了 11 分”，而应该是“蒙特利尔已经打了 8 场比赛并获得了 3 分”

The output I am getting

---

Answer 1

1. 您可以为各个点重复使用相同的变量，即pointsW 和pointsO，因为您不希望将它们的值保留到发布结果的最后。循环条件变量即go和用于输入赢/输的变量即letter也是如此。

2. 您将需要数组或不同的变量来存储总分、计数和团队名称。

   import java.util.Scanner;
   
   public class Standings {
       public static void main(String[] args) {
           Scanner keyboard = new Scanner(System.in);
           int option = keyboard.nextInt();
           int pointsW = 0;
           int pointsO = 0;
           String letter;
           boolean go = true;
           if (option == 2) {
               // Variables for total points, counting, and name for the first team
               int playedGamesTeamOne = 0;
               int teamOnePoints = 0;
               String teamOneName = keyboard.next();
               while (go) {
                   letter = keyboard.next();
                   if (letter.equals("W")) {
                       pointsW += 2;
                   } else if (letter.equals("O")) {
                       pointsO++;
                   }
                   playedGamesTeamOne++;
                   if (letter.equals("N")) {
                       teamOnePoints = pointsW + pointsO;
                       playedGamesTeamOne--;
                       go = false;
                   }
               }
   
               // Reset common variables
               go = true;
               pointsW = 0;
               pointsO = 0;
   
               // Variables for total points, counting, and name for the second team
               int playedGamesTeamTwo = 0;
               int teamTwoPoints = 0;
               String teamTwoName = keyboard.next();
               while (go) {
                   letter = keyboard.next();
                   if (letter.equals("W")) {
                       pointsW += 2;
                   } else if (letter.equals("O")) {
                       pointsO++;
                   }
                   playedGamesTeamTwo++;
                   if (letter.equals("Q")) {
                       teamTwoPoints = pointsW + pointsO;
                       playedGamesTeamTwo--;
                       go = false;
                   }
               }
   
               System.out.println(teamOneName + " has played " + playedGamesTeamOne + " games and has earned "
                       + teamOnePoints + " points");
               System.out.println(teamTwoName + " has played " + playedGamesTeamTwo + " games and has earned "
                       + teamTwoPoints + " points");
               if (teamOnePoints > teamTwoPoints) {
                   System.out
                           .println(teamOneName + " is in first place by " + (teamOnePoints - teamTwoPoints) + " points");
               } else {
                   System.out
                           .println(teamTwoName + " is in first place by " + (teamTwoPoints - teamOnePoints) + " points");
               }
           }
       }
   }
   

   示例运行：

   2
   Toronto
   W
   W
   L
   O
   W
   O
   W
   N
   Montreal 
   L
   L
   O
   L
   L
   W
   L
   L
   Q
   Toronto has played 7 games and has earned 10 points
   Montreal has played 8 games and has earned 3 points
   Toronto is in first place by 7 points
   

Answer 2

您可以将此代码用于选项二

     Scanner keyboard = new Scanner(System.in);

    int teamCounter = 1;
    //String[] teamsNames = new String[2];
    String teamOneName="";
    String teamTwoName="";
    //int[] playedGames = new int[2];
    int playedGamesTeamOne = 0;
    int playedGamesTeamTwo = 0;
    //int[] points = new int[2];
    int teamOnePoints = 0;
    int teamTwoPoints = 0;
    boolean firstTimeTeam1 = true;
    boolean firstTimeTeam2 = true;
    while (teamCounter <= 2) {
        if (teamCounter == 1) {
            if (firstTimeTeam1) {
                teamOneName = keyboard.nextLine();
                firstTimeTeam1 = false;
            }

            String letter = keyboard.next();
            if (letter.equals("W")) {
                teamOnePoints += 2;
                playedGamesTeamOne++;
            } else if (letter.equals("L")) {
                playedGamesTeamOne++;
            } else if (letter.equals("O")) {
                teamOnePoints += 1;
                playedGamesTeamOne++;
            } else if (letter.equals("N")) {
                teamCounter++;
            }


        } else {
            if (firstTimeTeam2) {
                teamTwoName = keyboard.next();
                firstTimeTeam2 = false;
            }

            String letter = keyboard.next();
            if (letter.equals("W")) {
                teamTwoPoints += 2;
                playedGamesTeamTwo++;
            } else if (letter.equals("L")) {
                playedGamesTeamTwo++;
            } else if (letter.equals("O")) {
                teamTwoPoints += 1;
                playedGamesTeamTwo++;
            } else if (letter.equals("Q")) {
                teamCounter++;
            }
        }
    }
    System.out.println(teamOneName + " has played " + playedGamesTeamOne + " games and has earned " + teamOnePoints + " points");
    System.out.println(teamTwoName + " has played " + playedGamesTeamTwo + " games and has earned " + teamTwoPoints + " points");
    if (teamOnePoints > teamTwoPoints) {
        System.out.println(teamOneName + " is in first place by " + (teamOnePoints-teamTwoPoints) + " points");
    } else {
        System.out.println(teamTwoName + " is in first place by " + (teamTwoPoints-teamOnePoints) + " points");
    }