public void Add(Student student)
{
studentsList.AddFirst(student);
}
public Student GetElement(int index)
{
Student[] studentsListTab = new Student[studentsList.Count];
studentsList.CopyTo(studentsListTab, 0);
return(studentsListTab[index - 1]);
}
public void Sort(int sortDirection, int sortField)
{
int count = studentsList.Count;
Student[] studentsListTab = new Student[count];
studentsList.CopyTo(studentsListTab, 0);
Student[] studentsListFinish = new Student[count];
if (sortField == 1)
{
if (studentsList.Count > 0)
{
string lastWord = studentsListTab[0].FirstName;
int indexLastElement = 0;
for (int j = count - 1; j >= 0; j--)
{
for (int i = 1; i < count - 1; i++)
{
int compare = 0;
compare = String.Compare(lastWord, studentsListTab[i].FirstName);
if (compare > 0)
{
lastWord = studentsListTab[i].FirstName;
indexLastElement = i;
}
}
string firstName = " ";
string lastName = " ";
string studentNumber = " ";
float averageScore = 0;
firstName = studentsListTab[indexLastElement].FirstName;
lastName = studentsListTab[indexLastElement].LastName;
studentNumber = studentsListTab[indexLastElement].StudentNumber;
averageScore = studentsListTab[indexLastElement].AverageScore;
Student studentCopy = new Student(firstName, lastName, studentNumber, averageScore);
Student removeByIndex = studentsListTab[indexLastElement];
studentsList.Remove(removeByIndex);
studentsListFinish[j] = studentCopy;
}
}
if (sortDirection == 1)
{
for (int i = 0; i < count; i++)
{
Student student = studentsListFinish[i];
studentsList.AddLast(student);
}
}
if (sortDirection == 0)
{
for (int i = 0; i < count; i++)
{
Student student = studentsListFinish[i];
studentsList.AddFirst(student);
}
}
}
if (sortField == 2)
{
if (studentsList.Count > 0)
{
string lastWord = studentsListTab[0].LastName;
int indexLastElement = 0;
for (int j = count - 1; j >= 0; j--)
{
for (int i = 1; i < count - 1; i++)
{
int compare = 0;
compare = String.Compare(lastWord, studentsListTab[i].LastName);
if (compare > 0)
{
lastWord = studentsListTab[i].LastName;
indexLastElement = i;
}
}
string firstName = " ";
string lastName = " ";
string studentNumber = " ";
float averageScore = 0;
firstName = studentsListTab[indexLastElement].FirstName;
lastName = studentsListTab[indexLastElement].LastName;
studentNumber = studentsListTab[indexLastElement].StudentNumber;
averageScore = studentsListTab[indexLastElement].AverageScore;
Student studentCopy = new Student(firstName, lastName, studentNumber, averageScore);
Student removeByIndex = studentsListTab[indexLastElement];
studentsList.Remove(removeByIndex);
studentsListFinish[j] = studentCopy;
}
}
if (sortDirection == 1)
{
for (int i = 0; i < count; i++)
{
Student student = studentsListFinish[i];
studentsList.AddLast(student);
}
}
if (sortDirection == 0)
{
for (int i = 0; i < count; i++)
{
Student student = studentsListFinish[i];
studentsList.AddFirst(student);
}
}
}
if (sortField == 3)
{
if (studentsList.Count > 0)
{
string lastWord = studentsListTab[0].StudentNumber;
int indexLastElement = 0;
for (int j = count - 1; j >= 0; j--)
{
for (int i = 1; i < count - 1; i++)
{
int compare = 0;
compare = String.Compare(lastWord, studentsListTab[i].StudentNumber);
if (compare > 0)
{
lastWord = studentsListTab[i].StudentNumber;
indexLastElement = i;
}
}
string firstName = " ";
string lastName = " ";
string studentNumber = " ";
float averageScore = 0;
firstName = studentsListTab[indexLastElement].FirstName;
lastName = studentsListTab[indexLastElement].LastName;
studentNumber = studentsListTab[indexLastElement].StudentNumber;
averageScore = studentsListTab[indexLastElement].AverageScore;
Student studentCopy = new Student(firstName, lastName, studentNumber, averageScore);
Student removeByIndex = studentsListTab[indexLastElement];
studentsList.Remove(removeByIndex);
studentsListFinish[j] = studentCopy;
}
}
if (sortDirection == 1)
{
for (int i = 0; i < count; i++)
{
Student student = studentsListFinish[i];
studentsList.AddLast(student);
}
}
if (sortDirection == 0)
{
for (int i = 0; i < count; i++)
{
Student student = studentsListFinish[i];
studentsList.AddFirst(student);
}
}
}
if (sortField == 4)
{
if (studentsList.Count > 0)
{
float scoreMin = studentsListTab[0].AverageScore;
int indexMinElement = 0;
for (int j = count - 1; j >= 0; j--)
{
for (int i = 1; i < count - 1; i++)
{
if (scoreMin > studentsListTab[i].AverageScore)
{
scoreMin = studentsListTab[i].AverageScore;
indexMinElement = i;
}
}
string firstName = " ";
string lastName = " ";
string studentNumber = " ";
float averageScore = 0;
firstName = studentsListTab[indexMinElement].FirstName;
lastName = studentsListTab[indexMinElement].LastName;
studentNumber = studentsListTab[indexMinElement].StudentNumber;
averageScore = studentsListTab[indexMinElement].AverageScore;
Student studentCopy = new Student(firstName, lastName, studentNumber, averageScore);
Student removeByIndex = studentsListTab[indexMinElement];
studentsList.Remove(removeByIndex);
studentsListFinish[j] = studentCopy;
}
}
if (sortDirection == 1)
{
for (int i = 0; i < count; i++)
{
Student student = studentsListFinish[i];
studentsList.AddLast(student);
}
}
if (sortDirection == 0)
{
for (int i = 0; i < count; i++)
{
Student student = studentsListFinish[i];
studentsList.AddFirst(student);
}
}
}
}