static void Main()
{
/* Create 4, or more, exercises.
* Create 3, or more, cohorts.
* Create 4, or more, students and assign them to one of the cohorts.
* Create 3, or more, instructors and assign them to one of the cohorts.
* Have each instructor assign 2 exercises to each of the students. */
Exercise Journal = new Exercise("Student Journal", "Javascript");
Exercise KandyKorner = new Exercise("Kandy Korner", "React")
{
};
Exercise CarLot = new Exercise("Car Lot", "C#");
Exercise Personal = new Exercise("Personal Website", "HTML");
Cohort thirty = new Cohort("Cohort 30");
Cohort twentynine = new Cohort("Cohort 29");
Cohort eveningeight = new Cohort("Evening 8");
Student pEris = new Student("Panya Gwynn-Eris", "naienko");
Student sRainault = new Student("Summer Rainault", "firechild");
Student bAllen = new Student("Bartholomew Allen", "theflash");
Student kDubhglas = new Student("Kieran Dubhglas", "eolascraicte");
Instructor sBrownlee = new Instructor("Steve Brownlee", "chortlehoort");
Instructor sStCyr = new Instructor("Sebastien StCyr", "elementalist");
Instructor eThawne = new Instructor("Eobard Thawne", "reverseflash");
thirty.AddStudents(new List <Student> {
sRainault, bAllen
}, thirty);
thirty.AddInstructors(eThawne, thirty);
eveningeight.AddStudents(kDubhglas, eveningeight);
eveningeight.AddInstructors(sBrownlee, eveningeight);
twentynine.AddStudents(pEris, twentynine);
twentynine.AddInstructors(sStCyr, twentynine);
sBrownlee.AssignExercise(Personal, kDubhglas);
sStCyr.AssignExercise(Journal, pEris);
eThawne.AssignExercise(KandyKorner, new List <Student> {
sRainault, bAllen
});
eThawne.AssignExercise(CarLot, sRainault);
eThawne.AssignExercise(Journal, bAllen);
sStCyr.AssignExercise(Personal, pEris);
sBrownlee.AssignExercise(Journal, kDubhglas);
Console.WriteLine(thirty);
Console.WriteLine(twentynine);
Console.WriteLine(eveningeight);
List <Student> students = new List <Student>()
{
pEris, bAllen, sRainault, kDubhglas
};
List <Exercise> exercises = new List <Exercise>()
{
Journal, CarLot, KandyKorner, Personal
};
List <Instructor> instructors = new List <Instructor>()
{
sBrownlee, eThawne, sStCyr
};
List <Cohort> cohorts = new List <Cohort>()
{
eveningeight, twentynine, thirty
};
// List exercises for the JavaScript language by using the Where() LINQ method.
var javascriptExercises = exercises.Where(e => e.Language == "Javascript");
Console.WriteLine("Exercises in Javascript");
foreach (var item in javascriptExercises)
{
Console.WriteLine(item);
}
Console.WriteLine(" ");
//List students in a particular cohort by using the Where() LINQ method.
var cohortThirtyStudents = students.Where(s => s._cohort == thirty);
Console.WriteLine("Cohort Thirty students");
foreach (var item in cohortThirtyStudents)
{
Console.WriteLine(item);
}
Console.WriteLine(" ");
//List instructors in a particular cohort by using the Where() LINQ method.
var cohortTwentynineInstructors = instructors.Where(i => i._cohort == twentynine);
Console.WriteLine("Cohort Twenty Nine Instructors");
foreach (var item in cohortTwentynineInstructors)
{
Console.WriteLine(item);
}
Console.WriteLine(" ");
//Sort the students by their last name.
IEnumerable <Student> byLastName = from student in students
orderby student._lastname ascending
select student;
Console.WriteLine("Sort by last name");
foreach (var item in byLastName)
{
Console.WriteLine(item);
}
Console.WriteLine(" ");
//Display any students that aren't working on any exercises (Make sure one of your student instances don't have any exercises. Create a new student if you need to.)
Student tMaclyr = new Student("Teleri MacLyr", "selkiegirl");
students.Add(tMaclyr);
IEnumerable <Student> boredStudent = from student in students
where student.Exercises.Count == 0
select student;
Console.WriteLine("Students who have no exercises");
foreach (var item in boredStudent)
{
Console.WriteLine(item);
}
Console.WriteLine(" ");
//Which student is working on the most exercises? Make sure one of your students has more exercises than the others.
eThawne.AssignExercise(Personal, sRainault);
IEnumerable <Student> starStudents = from student in students
orderby student.Exercises.Count descending
select student;
Console.WriteLine("The student who has the most exercises");
Console.WriteLine(starStudents.First());
Console.WriteLine(" ");
//How many students in each cohort?
List <StudentsInCohort> studentsPerCohort = (
from student in students
group student by student._cohort into cohortGroup
select new StudentsInCohort {
cohortName = cohortGroup.Key,
cohortCount = cohortGroup.Count()
}
).ToList();
foreach (StudentsInCohort entry in studentsPerCohort)
{
try{
Console.WriteLine($"{entry.cohortName.Name} has {entry.cohortCount} students in it.");
}
catch (NullReferenceException) {
Console.WriteLine($"There are unassigned students!");
}
}
}
