質問編集履歴
3
文章変更
test
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多次元配列の１行ごとの合計の出し方・成績表を作りたい
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f多次元配列の１行ごとの合計の出し方・成績表を作りたい
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test
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### 該当のソースコード
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```
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```java
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package jp.learningdesign.javastudy;
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printNames() ;
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をメインに
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をメインにおきましたがエラーが出ます。
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```
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[])
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```
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### 補足情報（FW/ツールのバージョンなど）
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ここにより詳細な情報を記載してください。
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コード修正
test
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File without changes
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test
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### 発生している問題・エラーメッセージ
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エラーコードは出ていないのですが、何も表示さないです。
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```
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p
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package jp.learningdesign.javastudy;
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class Task2_Lab5 {
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public static void main(String[] args) {
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//1. input
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String[][] names = {
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{"Ewell ", "Nate"},
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{"Smurthwaite ", "Adelina"},
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{"Bernollet ", "Maryjane"},
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{"Chalfain ", "Karlis"},
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{"Huckabe ", "Almire"}
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};
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double[][] grades = {
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{3.83, 9.21, 9.25, 0.84, 1.40, 7.90, 1.41, 5.15},
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{5.09, 3.66, 3.04, 3.02, 8.59, 2.34, 8.86, 7.40},
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{5.35, 0.85, 8.56, 7.37, 2.78, 3.19, 2.04, 5.70},
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{9.25, 9.62, 7.08, 7.27, 9.86, 5.88, 9.86, 9.70},
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{3.39, 2.75, 1.23, 1.04, 3.87, 8.72, 4.60, 6.21}
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};
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}
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public double classAverage(double[][] grades, double classAverage) {
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// avg of per line
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double[] personAvg = new double[grades.length];
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for (int i = 0; i < grades.length; i++) {
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double Sum = 0;
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for (int j = 0; j < grades[i].length; j++) {
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double
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double classSum = 0;
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double classAvg = 0;
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}
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double classAvg = ((Sum / grades.length) / grades[0].length);
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{3.39, 2.75, 1.23, 1.04, 3.87, 8.72, 4.60, 6.21}
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};
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personAvg[i] = Sum / grades[i].length;// １行の平均
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System.out.println("each students average " + personAvg[i]);
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System.out.println("class average " + classAvg);
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}
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return classAverage;
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}
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public void printNames(String[][] names, double[] personAvg) {
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String students = " ";
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for (int i = 0; i < names.length; i++) {
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for (int j = names[i].length - 1; j >= 0; j--) {
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students += " " + names[i][j];
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}
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students += "\t" + personAvg[i];
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}
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System.out.print(
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System.out.print(students + "\t\n");
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students = "";
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}
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}
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}
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```
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@@ -104,7 +140,25 @@
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### 試したこと
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classAverage(grades);
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printNames(names) ;
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や
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classAverage();
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printNames() ;
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をメインに置く。
|
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154
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+
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155
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+
```
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156
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107
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-
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The method classAverage(double[][], double) in the type Task2_Lab5 is not applicable for the arguments (double[]
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158
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159
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[])
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160
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+
|
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161
|
+
```
|
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108
162
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109
163
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110
164
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1
誤字
test
CHANGED
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File without changes
|
test
CHANGED
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@@ -1,6 +1,8 @@
|
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1
1
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### 前提・実現したいこと
|
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2
2
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3
3
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２次元配列を使った成績表を作っています。
|
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4
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+
|
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5
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+
完成イメージはこのように名前と平均成績の表を出したいです。
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