小编use*_*289的帖子

我有一个具有以下属性的Student类

public class Student
{
    public string Name{ get; set; }
    public string Subject { get; set; }
}

假设我们有一个像下面这样的学生名单

var students = new List<Student>();
students.Add(new Student { Name = "John", Subject = "Math"});
students.Add(new Student { Name = "Bob", Subject = "English, Math"});
students.Add(new Student { Name = "Jane", Subject = "Math, History, Art"});
students.Add(new Student { Name = "Jim", Subject = "English"});

我想按主题对学生进行分组并计算主题.

所以输出就是

Math, 3
English, 1
History 1
Art 1

如何使用linq实现结果？