C# List合并相同元素，把相同的元素的某个值累加

public class Student
{
    public string? Name { get; set; }
    public string? Sex { get; set; }
    public int Score { get; set; }//成绩
    public string? Course { get; set; }//课程
}


//数据源
List<Student> students = new List<Student>
{
    new Student(){Name="刘一",Sex="男",Score=1 ,Course="语文"},
    new Student(){Name="陈二",Sex="男",Score=1 ,Course="语文"},
    new Student(){Name="张三",Sex="男",Score=1 ,Course="语文"},
    new Student(){Name="张三",Sex="男",Score=1 ,Course="数学"},//重复行3
    new Student(){Name="张三",Sex="男",Score=1 ,Course="音乐"},//重复行3
    new Student(){Name="李四",Sex="男",Score=1 ,Course="语文"},
    new Student(){Name="刘一",Sex="男",Score=1 ,Course="美术"},//重复行1
    new Student(){Name="王五",Sex="男",Score=1 ,Course="语文"},
    new Student(){Name="赵六",Sex="男",Score=1 ,Course="语文"},
    new Student(){Name="张三",Sex="男",Score=1 ,Course="化学"}//重复行3
};


List<Student> result = new List<Student>();
while (students.Count > 0)
{
    Student stu = students[0];
    students.RemoveAt(0);//移除元素


    List<Student> list = new List<Student>();//创建临时列表
    foreach (var item in students)
    {
        if (item.Name.Equals(stu.Name))
        {
            stu.Score += item.Score;
            stu.Course += " "+item.Course;
        }
        else
        {
            list.Add(item);
        }
    }
    students = list;
    result.Add(stu);
}


foreach (var item in result)
{
    Console.WriteLine(item.Name +"丨"+item.Sex + "丨" + item.Score + "丨" + item.Course);
}