Question

我是Java的新手，我有一个程序玩家猜测一个项目的价格（首先输入确切的价格）。我有一个名为winnerCount的数组，它跟踪每个玩家赢得的回合。我想使用＆＃34; JOptionPane.showMessageDialog＆＃34;输出它。部分代码涉及根据赢得的回合给每位玩家一个奖励。因此，对于我的伪代码，我有IF轮次赢得= 1那么奖金赢得：15,125美元。当我在Java中尝试相同的想法时，它给了我错误＆＃34;无与伦比的类型＆＃34;因为它比较int和int[]。由于Java无法比较不同的数据类型，我可以通过哪种方式输出所需的结果（＆＃34; winnerCount＆＃34;以及每位玩家赢得的奖品）？

这是我与

合作的内容

import javax.swing.JOptionPane;
import java.lang.Math;
import java.util.*;

public class priceIsRight {

 public static void main(String[] args) {

  double [] numPlayers = new double [4];
  double exactPrice = getExactPrices();
  double [] guessPrice = getGuessPrices(exactPrice);
  int roundsWon = getRoundsWon(guessPrice, exactPrice);
  int numRounds = 0;
  int [] winnersCount = new int [4];
  int roundWinner = getRoundsWon(guessPrice, exactPrice); 
  int prizesWon = calculatePrizesWon(winnersCount, roundWinner);

  }

 public static int getRoundsWon(double[] guessPrice, double exactPrice) {

    int roundWinner = getRoundsWon(guessPrice, exactPrice);
    int [] winnersCount = new int [4];
    int numRounds = 0;
    do {
       double minValue = Math.abs(exactPrice-guessPrice[0]);
       roundWinner = 0;
       for (int i=1;i < guessPrice.length; i++) {
           double diff = Math.abs(exactPrice-guessPrice[i]);
           if (diff<minValue) {
               minValue=diff;
               roundWinner=i;
           }
           winnersCount[roundWinner]++;
       }
       }
       while (numRounds <=3);
       return roundWinner;

   }


//Outputs result
     public static int calculatePrizesWon(int [] winnersCount, int roundWinner) {

     int prizesWon = 0;
     if (winnersCount = 0) {
        JOptionPane.ShowMessageDialog(null, "Prize won: $106 consolidation prize!");
        }
     else if (winnersCount = 1) {    
     JOptionPane.ShowMessageDialog(null, "Prize won: $15,125!");
        } 
     else if (winnersCount = 2) {    
     JOptionPane.ShowMessageDialog(null, "Prize won: $30,110!");
        } 
     else if (winnersCount = 3) {    
     JOptionPane.ShowMessageDialog(null, "Prize won: $15,120,000!");
        } 

    }
}

Answer 1

您需要指定要比较的数组中的哪个位置。试试这个：

public static int calculatePrizesWon(int[] winnersCount, int roundWinner) {

    int prizesWon = 0;
    if (winnersCount[roundWinner] == 0) {
        JOptionPane.showMessageDialog(null, "Prize won: $106 consolidation prize!");
    } else if (winnersCount[roundWinner] == 1) {
        JOptionPane.showMessageDialog(null, "Prize won: $15,125!");
    } else if (winnersCount[roundWinner] == 2) {
        JOptionPane.showMessageDialog(null, "Prize won: $30,110!");
    } else if (winnersCount[roundWinner] == 3) {
        JOptionPane.showMessageDialog(null, "Prize won: $15,120,000!");
    }
    return prizesWon; // Replace this with the real prize won number.
}

您可能会使用switch语句做得更好。如果您想查看或接收有关其他事项的评论，您可以更好地发表评论。

Answer 2

有些事情对这段代码没有意义。例如，为什么你让numPlayers成为double []？

是不是更有意义呢？

int numPlayers = 4;

对于你的winnersCount，是存储每个玩家赢了多少轮？如果是这样，那么我假设您的calculatePrizesWon方法应该迭代每个玩家，并输出他们的奖品。

像

这样的东西

public static int calculatePrizesWon(int [] winnersCount, int roundWinner) 
{
    int prizesWon = 0;

    for (int i = 0; i < winnersCount.length; i++)
    {
        if (winnersCount[i] == 0) 
        {
            JOptionPane.ShowMessageDialog(null, "Player "+i+" - Prize won: $106 consolidation prize!");
        }
        else if (winnersCount[i] == 1) 
        {    
            JOptionPane.ShowMessageDialog(null, "Player "+i+" - Prize won: $15,125!");
        } 
        else if (winnersCount[i] == 2) 
        {    
            JOptionPane.ShowMessageDialog(null, "Player "+i+" - Prize won: $30,110!");
        } 
        else if (winnersCount[i] == 3) 
        {    
            JOptionPane.ShowMessageDialog(null, "Player "+i+" - Prize won: $15,120,000!");
        } 
    }
}

此外，您传递给calculatePrizesWon的“圆形赢家”参数是什么？什么是“prizesWon”变量？例如，如果一名球员赢了三轮，那么他们也不会赢得三个奖项吗？那么winnersCount和奖品之间有什么区别呢？我会尝试提供帮助，但你需要更清楚地解释一下你正在做些什么。

麻烦输出数组计数器

2 个答案: