static void Main()
{
List <Student> studentList = new List <Student>();
studentList.Add(new Student("Penko", "Penkov", 19, "378204", new List <double> {
2, 5, 3, 3
}, "0889776523", "*****@*****.**", "Physics"));
studentList.Add(new Student("Genko", "Genkov", 29, "341104", new List <double> {
2, 2
}, "0979786523", "*****@*****.**", "Mathematics"));
studentList.Add(new Student("Stancho", "Prosenikov", 27, "298705", new List <double> {
5, 4, 5, 6
}, "0866776595", "*****@*****.**", "Informatics"));
studentList.Add(new Student("Ferdi", "Mravkata", 22, "277206", new List <double> {
6, 5
}, "02887665", "*****@*****.**", "Economics"));
studentList.Add(new Student("Oli", "Frenov", 22, "2888506", new List <double> {
2, 2
}, "02887665", "*****@*****.**", "2"));
Console.WriteLine("Problem 3. First before last");
Console.WriteLine(string.Join(",\n", Student.FirsBeforLast(studentList)));
Console.WriteLine();
Console.WriteLine("Problem 4. Age range");
Console.WriteLine(string.Join(",\n", Student.AgeBetween(studentList)));
Console.WriteLine();
Console.WriteLine("Problem 5. Order students");
Console.WriteLine(string.Join(",\n", Student.OrderStudents(studentList)));
Console.WriteLine();
Console.WriteLine("Problem 9.Student groups");
Console.WriteLine(string.Join(",\n", Student.GroupTwoStudent(studentList)));
Console.WriteLine();
Console.WriteLine("Problem 10. Student groups extensions");
Console.WriteLine(string.Join(",\n", Student.GroupTwoStudentExt(studentList)));
Console.WriteLine();
Console.WriteLine("Problem 11. Extract students by email");
Console.WriteLine(string.Join(",\n", Student.StudentEmail(studentList)));
Console.WriteLine();
Console.WriteLine("Problem 12. Extract students by phone");
Console.WriteLine(string.Join(",\n", Student.StudentTelefonInSofiq(studentList)));
Console.WriteLine();
Console.WriteLine("Problem 13. Extract students by marks");
Student.StudentWithSix(studentList);
Console.WriteLine();
Console.WriteLine("14. Extract students with two marks");
Console.WriteLine(string.Join(",\n", Student.StudentWithMarkTwo(studentList)));
Console.WriteLine();
Console.WriteLine("Problem 15. Extract marks");
Student.StudentTwoHundred(studentList);
Console.WriteLine();
Console.WriteLine("Problem 18. Grouped by GroupNumber");
Console.WriteLine(string.Join(",\n", Student.StudentGroup(studentList)));
Console.WriteLine();
Console.WriteLine("Problem 19. Grouped by GroupName extensions");
Student.StudentGroupExt(studentList);
Console.WriteLine();
}
