private void AddInCollections(StudentFromAbstract student)
{
listStudents.Add(student);
listString.Add(student.ToString());
dictPerson.Add(student.BasePerson, student);
dictString.Add(student.ToString(), student);
}
public void DeleteElem()
{
if (listString.Count == 0)
{
Console.WriteLine("Коллекции пусты!");
return;
}
GetStudentInfo(out string name, out int age, out string gender, out int course, out double avgGrades);
var student = new StudentFromAbstract(name, age, gender, course, avgGrades);
if (!listString.Contains(student.ToString()))
{
Console.WriteLine("Элемент не найден!");
return;
}
else
{
student = dictString[student.ToString()];
}
listStudents.Remove(student);
listString.Remove(student.ToString());
dictPerson.Remove(student.BasePerson);
dictString.Remove(student.ToString());
}
public TestCollections()
{
int size = 1000;
Random r = new Random(DateTime.Now.Millisecond);
for (int i = 0; i < size; i++)
{
var student = new StudentFromAbstract(GenerateName(), r.Next(10, 100), GenerateGender(), r.Next(1, 7), r.NextDouble() * 5);
AddInCollections(student);
}
}
public void FindElems()
{
var firstElem = dictPerson[dictPerson.Keys.ToArray()[0]];
var middleElem = listStudents[500];
var lastElem = listStudents[999];
var newElem = new StudentFromAbstract("George", 10, "male", 1, 2);
FindItem(firstElem, "Поиск первого элемента: ");
FindItem(middleElem, "Поиск среднего элемента: ");
FindItem(lastElem, "Поиск последнего элемента: ");
FindItem(newElem, "Поиск не входящего в коллекцию элемента: ");
}
private void FindItem(StudentFromAbstract student, string message)
{
var watch = new Stopwatch();
var foundItem = new StudentFromAbstract();
Console.WriteLine(message + student.ToString());
Console.WriteLine("Поиск в первой коллекции (List<StudentFromAbstract>):");
watch.Start();
if (listStudents.Contains(student))
{
foundItem = new StudentFromAbstract(student.Name, student.Age, student.Gender, student.Course, student.AverageGrades);
watch.Stop();
Console.WriteLine("Элемент найден!");
}
else
{
watch.Stop();
Console.WriteLine("Элемент не найден!");
}
Console.WriteLine("Время поиска:" + watch.ElapsedTicks);
Console.WriteLine();
watch.Reset();
Console.WriteLine("Поиск во второй коллекции (List<string>):");
watch.Start();
if (listString.Contains(student.ToString()))
{
foundItem = new StudentFromAbstract(student.Name, student.Age, student.Gender, student.Course, student.AverageGrades);
watch.Stop();
Console.WriteLine("Элемент найден!");
}
else
{
watch.Stop();
Console.WriteLine("Элемент не найден!");
}
Console.WriteLine("Время поиска:" + watch.ElapsedTicks);
Console.WriteLine();
watch.Reset();
Console.WriteLine("Поиск в третьей коллекции (по ключу) (Dictionary<PersonAbstract, StudentFromAbstract>):");
watch.Start();
if (dictPerson.ContainsKey(student.BasePerson))
{
foundItem = new StudentFromAbstract(student.Name, student.Age, student.Gender, student.Course, student.AverageGrades);
watch.Stop();
Console.WriteLine("Элемент найден!");
}
else
{
watch.Stop();
Console.WriteLine("Элемент не найден!");
}
Console.WriteLine("Время поиска:" + watch.ElapsedTicks);
Console.WriteLine();
watch.Reset();
Console.WriteLine("Поиск в третьей коллекции (по значению) (Dictionary<PersonAbstract, StudentFromAbstract>):");
watch.Start();
if (dictPerson.ContainsValue(student))
{
foundItem = new StudentFromAbstract(student.Name, student.Age, student.Gender, student.Course, student.AverageGrades);
watch.Stop();
Console.WriteLine("Элемент найден!");
}
else
{
watch.Stop();
Console.WriteLine("Элемент не найден!");
}
Console.WriteLine("Время поиска:" + watch.ElapsedTicks);
Console.WriteLine();
watch.Reset();
Console.WriteLine("Поиск в четвертой коллекции (Dictionary<string, StudentFromAbstract>):");
watch.Start();
if (dictString.ContainsKey(student.ToString()))
{
foundItem = new StudentFromAbstract(student.Name, student.Age, student.Gender, student.Course, student.AverageGrades);
watch.Stop();
Console.WriteLine("Элемент найден!");
}
else
{
watch.Stop();
Console.WriteLine("Элемент не найден!");
}
Console.WriteLine("Время поиска:" + watch.ElapsedTicks);
Console.WriteLine();
watch.Reset();
}
