请问如何使用循环将一个泛型为对象的集合行转列到另一个泛型为对象的集合?

Question

现在程序中有一组学生成绩数据（getScoreList()返回结果），每条数据为某个学生的某科成绩。学生成绩可能不是4科都有，可能有缺科。
对这组数据进行数据转换和计算处理，转换成学生记录列表，每条记录里面有4科成绩和总成绩，并在此基础上计算全班的平均成绩。
列表按总成绩从高到低排序。计算平均成绩时，考虑缺课时的情况。

• 想要输出的结果是这样的形式

    姓名    数学  语文  英语  物理  总成绩
    王五    77    82    90   65    434
    张三    65    84    89         316
    李四    89    76         76    313
     …
  平均成绩 83.5  70.5  78   82.5  314.5

public class ShowMeBug {
        public static void main(String[] args) {
                new ShowMeBug().test();
        }

        public void test(){
                List<ScoreVo> scoreList = getScoreList();
                // TODO 在这里实现代码

                System.out.println(scoreList.size());
        }

        public List<ScoreVo> getScoreList() {
                List<ScoreVo> scoreList = new ArrayList<ScoreVo>();
                scoreList.add(new ScoreVo("张三", "语文", 80));
                scoreList.add(new ScoreVo("张三", "物理", 76));
                scoreList.add(new ScoreVo("李四", "语文", 78));
                scoreList.add(new ScoreVo("茅十八", "英语", 65));
                scoreList.add(new ScoreVo("李四", "数学", 88));
                scoreList.add(new ScoreVo("李四", "物理", 87));
                scoreList.add(new ScoreVo("王五", "语文", 67));
                scoreList.add(new ScoreVo("张三", "数学", 76));
                scoreList.add(new ScoreVo("李四", "英语", 89));
                scoreList.add(new ScoreVo("王五", "数学", 65));
                scoreList.add(new ScoreVo("赵六", "物理", 95));
                scoreList.add(new ScoreVo("王五", "英语", 78));
                scoreList.add(new ScoreVo("王五", "物理", 65));
                scoreList.add(new ScoreVo("赵六", "语文", 89));
                scoreList.add(new ScoreVo("赵六", "英语", 87));
                scoreList.add(new ScoreVo("黄七", "语文", 78));
                scoreList.add(new ScoreVo("黄七", "数学", 65));
                scoreList.add(new ScoreVo("刘八", "英语", 87));
                scoreList.add(new ScoreVo("张三", "英语", 56));
                scoreList.add(new ScoreVo("黄七", "物理", 76));
                scoreList.add(new ScoreVo("刘八", "数学", 89));
                scoreList.add(new ScoreVo("黄七", "英语", 98));
                scoreList.add(new ScoreVo("刘八", "语文", 56));
                scoreList.add(new ScoreVo("刘八", "物理", 76));
                scoreList.add(new ScoreVo("钱九", "语文", 88));
                scoreList.add(new ScoreVo("钱九", "数学", 67));
                scoreList.add(new ScoreVo("茅十八", "数学", 43));
                scoreList.add(new ScoreVo("钱九", "英语", 75));
                scoreList.add(new ScoreVo("茅十八", "语文", 45));
                scoreList.add(new ScoreVo("茅十八", "物理", 56));

                return scoreList;
        }

        class ScoreVo {
                public String studentName;
                public String courseName;
                public double score;

                public ScoreVo(String studentName, String courseName, double score){
                        this.studentName = studentName;
                        this.courseName = courseName;
                        this.score = score;
                }

                public String toString(){
                        return this.studentName + "\t" + this.courseName + "\t" + this.score;
                }
        }
        class StudentVo {
                private String name;
                private double chineseScore;
                private double mathScore;
                private double englishScore;
                private double physicalScore;
                private double totalScore;

                public StudentVo(){

                }

                public String getName() {
                        return name;
                }
                public void setName(String name) {
                        this.name = name;
                }
                public double getChineseScore() {
                        return chineseScore;
                }
                public void setChineseScore(double chineseScore) {
                        this.chineseScore = chineseScore;
                }
                public double getMathScore() {
                        return mathScore;
                }
                public void setMathScore(double mathScore) {
                        this.mathScore = mathScore;
                }
                public double getEnglishScore() {
                        return englishScore;
                }
                public void setEnglishScore(double englishScore) {
                        this.englishScore = englishScore;
                }
                public double getPhysicalScore() {
                        return physicalScore;
                }
                public void setPhysicalScore(double physicalScore) {
                        this.physicalScore = physicalScore;
                }
                public double getTotalScore() {
                        return totalScore;
                }
                public void setTotalScore(double totalScore) {
                        this.totalScore = totalScore;
                }
        }
}

Answer 1

https://blog.csdn.net/weixin_30408675/article/details/97259160