Interfeys toifalari tushunchasi Interfeys toifalarni abstract bazaviy sinflar bilan taqqoslash Maxsus interfeyslarni kiritish

Stek (LIFO: Last in – First out)
Stack sinfi “oxiri kirding – birinchi chiqding” tarzida elementlarga xizmat qiluvchi elementlar kollektsiyasini taqdim etadi.
static void UseGenericStack()
{
Stack
stackOfPeople = new Stack
();
stackOfPeople.Push (new Person
{ FirstName = "Homer", LastName = "Simpson", Age = 47 });
stackOfPeople.Push (new Person
{ FirstName = "Marge", LastName = "Simpson", Age =45 });
stackOfPeople.Push(new Person
{ FirstName = "Lisa", LastName = "Simpson", Age = 9 });
// Tepadagi elementni ko’rish, uni chiqarish va yana ko’rish
Console.WriteLine("Birinchi xodim: {0}", stackOfPeople.Peek());
Console.WriteLine("Chiqarildi {0}", StackOfPeople.Pop());
Console.WriteLine("\n Birinchi xodim: {0}", stackOfPeople.Peek());
Console.WriteLine("Chiqarildi {0}", stackOfPeople.Pop());
Console.WriteLine("\n Birinchi xodim: {0}", stackOfPeople.Peek());
Console.WriteLine("Chiqarildi {0}", stackOfPeople.Pop());
try
{
Console.WriteLine("\nn Birinchi xodim: {0}", StackOfPeople.Peek());
Console.WriteLine("Chiqarildi {0}", stackOfPeople.Pop());
}
catch (InvalidOperationException ex)
{
Console.WriteLine("\nError! {0}", ex.Message); // Xato! Stek bo’sh
}
}
Natija:
Birinchi xodim: Name: Lisa Simpson, Age: 9
Chiqarildi Name: Lisa Simpson, Age: 9
Birinchi xodim: Name: Marge Simpson, Age: 45
Chiqarildi Name: Marge Simpson, Age: 45
Birinchi xodim: Name: Homer Simpson, Age: 47
Chiqarildi Name: Homer Simpson, Age: 47
Error! Stack empty.

Navbat (FIFO – First in – First out)
Navbatlar – bu “birinchi kirding – birinchi chiqding” tarzida elementlarga ishlov berish uchun ishlatiladi. Buning uchun Queue sinfidan foydalanish qulaydir.
Navbatga oid misol ko’rishdan oldin, ushbu statik metod bor (ya’ni yozilgan) deb faraz qilaylik:
static void GetCoffee(Person p)
{
Console.WriteLine("{0} kofe oldi!”, p. FirstName);
}
Bu metod quyidagi yordamchi metod ichida chaqiriladi:
static void UseGenericQueue()
{
// Uchta odamdan iborat navbat hosil qilish
Queue
peopleQ = new Queue
();
peopleQ.Enqueue(new Person {FirstName= "Homer”,
LastName=”Simpson", Age=47});
peopleQ.Enqueue(new Person {FirstName= "Marge",
LastName="Simpson", Age=45});
peopleQ.Enqueue(new Person {FirstName= ’’Lisa”,
LastName="Simpson", Age=9});
// Navbatda birinchi kim ekanini ko’rish
Console.WriteLine("{0} birinchida!", peopleQ.Peek().FirstName);
// Hammani navbatdan o’chirish
GetCoffee(peopleQ.Dequeue() ) ;
GetCoffee(peopleQ.Dequeue());
GetCoffee(peopleQ.Dequeue());
// Navbatdagi kimnidir olishga urinish
try
{
GetCoffee(peopleQ.Dequeue() ) ;
}
catch(InvalidOperationException e)
{
Console.WriteLine("Error! {0}", e.Message); // Xato! Navbat bo’sh
}
}
Endi bu metodni Main() metodidan chaqirsak, ushbu natija ekranga chiqariladi:
Homer is birinchida!
Homer kofe oldi!
Marge kofe oldi!
Lisa kofe oldi!
Error1 Queue empty.