//PREPARATIONS
//Because I created custom class and didn't implement IEnumerate, I have to find an index of a specific student in StudentList by myself.
static int FindIndexStudent(Student student)
{
int index = -1;
for (int i = 0; i < StudentList.GetStudents().Length; i++)
{
if (student == StudentList.GetStudents()[i])
{
index = i;
}
}
return(index);
}
//DESCRIPTION ABOUT HOW DISTRIBUTION METHOD WORKS!
//Distribution method. This method allows to distribute all new students (that have GroupNumber = 0) to a specific group.
//First, it checks for students that can de distributed (GroupNumb = 0) and if so, puts them to an individual list.
//Second, it checks for Students Count in the list. If count is 0 -> a massage will occure about all students have been distributed already and method STOPS.
//Third, it asks to select a specific student from the list by his Number. If 0 is selected -> method STOPS (per request).
//Fourth, it asks about group number this student has to be assigned to.
//Fifth, it checks for availability of a selected group with a help of Overload function.
//If group is full already, it will ask to select another group.
//Sixth, with a help of DistMessage user get info about his actions; this student gets put into a dedicated group array _groupNum;
//this student gets removed from temp list "allStudents" -> this will help to check for duplicates of the same person;
//GroupNumber in StudentList of this specific student gets updated so he will no longer contribute in distribution function in further runs.
public static void Distribute()
{
List <Student> allStudents = new List <Student>();
//building a list of new students with (GroupNumb = 0).
for (int i = 0; i < StudentList.GetStudents().Length; i++)
{
if (StudentList.GetStudents()[i].GroupNumb == 0)
{
allStudents.Add(StudentList.GetStudents()[i]);
}
}
//check for amount of new students.
bool newStudents = true;
if (allStudents.Count == 0)
{
Console.WriteLine("All student already distributed between groups!");
newStudents = false;
}
//Intermidiate check for number of students already in the group in case Distribute method will be run multiple times.
int studentCount1 = 0;
int studentCount2 = 0;
int studentCount3 = 0;
for (int i = 0; i < 5; i++)
{
if (_groupNum1[i] != null)
{
studentCount1++;
}
}
for (int i = 0; i < 15; i++)
{
if (_groupNum2[i] != null)
{
studentCount2++;
}
}
for (int i = 0; i < 20; i++)
{
if (_groupNum3[i] != null)
{
studentCount3++;
}
}
//intermediate check end.
while (studentCount1 + studentCount2 + studentCount3 < StudentList.GetStudents().Length&& newStudents)
{
//duplicated list of students that can be assigned.
Console.WriteLine("========================================");
for (int i = 0; i < allStudents.Count; i++)
{
Console.WriteLine($"N: { i + 1, 0}, Name: { allStudents[i].Name, 10}, Surname: { allStudents[i].Surname, 10}, Age: { allStudents[i].Age, 3}");
}
Console.WriteLine("========================================");
//selection of a student.
int studentNum = -1 + Input.Validation(allStudents.Count, "Select number N of a student you want to assign to a specific group or select 0 if you want to quit.");
if (studentNum == -1)
{
break;
}
//selection of a group.
int groupNum = Overload(studentCount1, studentCount2, studentCount3, 5, 15, 20);
switch (groupNum)
{
case 1:
{
//message to user
DistMessage(groupNum, allStudents[studentNum]);
//assigning student to a GroupList collection.
_groupNum1[studentCount1] = allStudents[studentNum];
//changing GroupNumb of this student in StudentList collection.
StudentList.GetStudents()[FindIndexStudent(allStudents[studentNum])].GroupNumb = 1;
//removing student from the temporary list.
allStudents.Remove(allStudents[studentNum]);
//increasing counter of students in the group.
studentCount1++;
break;
}
case 2:
{
DistMessage(groupNum, allStudents[studentNum]);
_groupNum2[studentCount2] = allStudents[studentNum];
StudentList.GetStudents()[FindIndexStudent(allStudents[studentNum])].GroupNumb = 2;
allStudents.Remove(allStudents[studentNum]);
studentCount2++;
break;
}
case 3:
{
DistMessage(groupNum, allStudents[studentNum]);
_groupNum3[studentCount3] = allStudents[studentNum];
StudentList.GetStudents()[FindIndexStudent(allStudents[studentNum])].GroupNumb = 3;
allStudents.Remove(allStudents[studentNum]);
studentCount3++;
break;
}
case 0:
{
//return to a Student selection
break;
}
}
}
}
public ActionResult Index()
{
List <Student> myStudent = studentAll.GetStudents();
return(View(myStudent));
}