Question

我正在编写一个保龄球分数计划，我输入一系列保龄球的昵称，然后制作一个平行的2D数组，分数为4轮。然后在最后我应该能够打印他们的分数和他们的分数的平均值。但是，我对平均值的代码循环遍历每个数字并将其除以4。每次它也将数字添加到前一个数字。 toString方法也不起作用。

import java.util.Arrays;

public class BowlingScores {
public void printScores()
 {
 String[] nicknames = {"Kylie", "Caitlyn", "Kim", "Kanye"};


int[][] scores =  
{{145, 167, 183, 193},
{76, 84, 92, 104},
{77, 177, 182, 196},
{300, 300, 300, 300}};

int sum = 0; 

for(int index = 0; index < scores.length; index++)
for(int j = 0; j < 4; j++)
{

        sum = sum + scores[index][j];
        int average = sum/ scores.length; 




     System.out.println("");



    System.out.print(nicknames[index] + " bowled rounds of " + scores[index] + " and had an average of " + average);








}
}
}

Answer 1

这应解决您的聚合问题和toString()问题：

for (int index = 0; index < scores.length; index++) {
  int sum = 0;
  for (int j = 0; j < scores[index].length; j++) {
    sum = sum + scores[index][j];
  }
  int average = sum / scores[index].length;
  System.out.println(nicknames[index] + " bowled rounds of "
      + Arrays.toString(scores[index])
      + " and had an average of " + average);
}

请注意，数组上的toString()直接无法正常工作。相反，您应该使用明确的java.util.Arrays.toString()。

我编写了一个BowlingScores程序。

1 个答案: