static void Main(string[] args)
{
/* ----------------Part-4-------------------
*/
//arraylist-an ordered collection of an object that can be indexed individually
//unlike array you can add and remove items from a list at a specified position
//using an index and the array resizes itself automatically.
//It also allows dynamic memory allocation, adding, searching and sorting items in the list.
ArrayList al = new ArrayList();
al.Add(45);
al.Add(78);
al.Add(33);
al.Add(56);
al.Add(12);
al.Add(23);
al.Add(9);
Console.WriteLine("Capacity: {0} ", al.Capacity);
Console.WriteLine("Count: {0}", al.Count);
Console.Write("Content: ");
foreach (int i in al)
{
Console.Write(i + " ");
}
Console.WriteLine();
Console.Write("Sorted Content: ");
al.Sort();
foreach (int i in al)
{
Console.Write(i + " ");
}
Console.WriteLine();
//hashtable-collection of key-and-value pairs
//that are organized based on the hash code of the key.
//It uses the key to access the elements in the collection.
Hashtable ht = new Hashtable();
ht.Add("001", "Heli");
ht.Add("002", "Deepika");
ht.Add("003", "Ranveer");
ht.Add("004", "Shahrukh");
ht.Add("005", "Salman");
ht.Add("006", "Alia");
ht.Add("007", "Neha");
if (ht.ContainsValue("Durga"))
{
Console.WriteLine("This student name is already in the list");
}
else
{
ht.Add("008", "Durga");
}
ICollection key = ht.Keys;
foreach (string k in key)
{
Console.WriteLine(k + ": " + ht[k]);
}
//sortedlist-collection of key-and-value pairs that are sorted by the keys
//and are accessible by key and by index.
//A sorted list is a combination of an array and a hash table.
//It contains a list of items that can be accessed using a key or an index.
//If you access items using an index, it is an ArrayList, and if you access items using a key,
//it is a Hashtable. The collection of items is always sorted by the key value.
SortedList sl = new SortedList();
sl.Add("001", "Heli");
sl.Add("002", "Deepu");
sl.Add("003", "Ranveer");
sl.Add("004", "Nehu");
sl.Add("005", "Rohanpreet");
sl.Add("006", "Alia");
sl.Add("007", "Ritesh");
if (sl.ContainsValue("Durga"))
{
Console.WriteLine("This student name is already in the list");
}
else
{
sl.Add("008", "Durga");
}
ICollection key_sl = sl.Keys;
foreach (string k in key_sl)
{
Console.WriteLine(k + ": " + sl[k]);
}
//stack-a last-in, first out collection of object.
//It is used when you need a last-in, first-out access of items. When you add an item in the list,
//it is called pushing the item and when you remove it, it is called popping the item.
Stack st = new Stack();
st.Push('A');
st.Push('M');
st.Push('G');
st.Push('W');
Console.WriteLine("Current stack: ");
foreach (char c in st)
{
Console.Write(c + " ");
}
Console.WriteLine();
st.Push('V');
st.Push('H');
Console.WriteLine("Current stack: ");
foreach (char c in st)
{
Console.Write(c + " ");
}
Console.WriteLine();
Console.WriteLine("The next poppable value in stack: {0}", st.Peek());
Console.WriteLine("Removing values ");
st.Pop();
st.Pop();
st.Pop();
Console.WriteLine("Current stack: ");
foreach (char c in st)
{
Console.Write(c + " ");
}
Console.WriteLine();
//queue-a first-in, first out collection of object. It is used when
//you need a first-in, first-out access of items.
//When you add an item in the list, it is called enqueue,
//and when you remove an item, it is called deque.
Queue q = new Queue();
q.Enqueue('A');
q.Enqueue('M');
q.Enqueue('G');
q.Enqueue('W');
Console.WriteLine("Current queue: ");
foreach (char c in q)
{
Console.Write(c + " ");
}
Console.WriteLine();
q.Enqueue('V');
q.Enqueue('H');
Console.WriteLine("Current queue: ");
foreach (char c in q)
{
Console.Write(c + " ");
}
Console.WriteLine();
Console.WriteLine("Removing some values ");
char ch = (char)q.Dequeue();
Console.WriteLine("The removed value: {0}", ch);
ch = (char)q.Dequeue();
Console.WriteLine("The removed value: {0}", ch);
Console.ReadKey();
}
static void Main(string[] args)
{
Vehicle[] crafts = new Vehicle[5] {
new Aircraft("SU-27", 16.9), new Aircraft("MIG-29", 10.9),
new Amphibian("DINGO", 3.6), new Amphibian("BE-200", 27.6), new Aircraft("SU-35", 19.0)
};
ArrayList arrayList = new ArrayList();
arrayList.AddRange(crafts);
int choice = 11;
do
{
Console.WriteLine("**************************************");
Console.WriteLine("* Главное меню *");
Console.WriteLine("* выберите действие *");
Console.WriteLine("**************************************");
Console.WriteLine("1 - просмотр коллекции");
Console.WriteLine("2 - добавление элемента (конструктор с двумя параметрами)");
Console.WriteLine("3 - добавление элемента по указанному индексу");
Console.WriteLine("4 - нахождение элемента с начала коллекции");
Console.WriteLine("5 - нахождение элемента с конца коллекции");
Console.WriteLine("6 - удаление элемента по индексу");
Console.WriteLine("7 - удаление элемента по значению");
Console.WriteLine("8 - реверс коллекции");
Console.WriteLine("9 - сортировка");
Console.WriteLine("10 - выполнение методов всех обьектов, поддерживающих Interface2");
Console.WriteLine("0 - выход");
choice = int.Parse(Console.ReadLine());
switch (choice)
{
case 1:
ShowList(arrayList);
break;
case 2:
AddObject(arrayList);
break;
case 3:
AddByIndex(arrayList);
break;
case 4:
Console.WriteLine("Элемент с начала коллекци");
((Vehicle)arrayList[0]).Print1();
break;
case 5:
Console.WriteLine("Элемент с конца коллекци");
((Vehicle)arrayList[(arrayList.Count) - 1]).Print1();
break;
case 6:
Console.WriteLine("Ввдите индекс удаляемого обьекта");
int delIndex = int.Parse(Console.ReadLine());
if (delIndex < 0 || delIndex >= (arrayList.Count))
{
Console.WriteLine("Неверный индекс!");
}
else
{
arrayList.RemoveAt(delIndex);
Console.WriteLine("Элемент с индексом {0} успешно удален из коллекции", delIndex);
}
break;
case 7:
Console.WriteLine("*********Удаление элемента по значению*************");
Console.WriteLine("Введите имя удаляемого обьекта...");
string delObjectname = Console.ReadLine();
int craftIndex = 0;
int craftIndex1 = 0;
bool condition = false;
foreach (Vehicle craft in arrayList)
{
if (delObjectname == craft.name)
{
craftIndex1 = craftIndex;
condition = true;
}
craftIndex++;
}
if (condition)
{
Console.WriteLine("Элемент с указанным значением существует в коллекции и будет удален");
arrayList.RemoveAt(craftIndex1);
}
else
{
Console.WriteLine("Элемент с указанным значением не найден!");
}
break;
case 8:
Console.WriteLine("Реверс коллекции выполнен");
arrayList.Reverse();
break;
case 9:
Console.WriteLine("Сортировка коллекции выполнена");
arrayList.Sort();
break;
case 10:
Console.WriteLine("Выполнение методов всех обьектов, поддерживающих интерфейс ISwiming");
foreach (Vehicle craft in arrayList)
{
if (craft is ISwiming)
{
((ISwiming)craft).Swim();
}
}
break;
default: return;
}
} while (choice != 0);
}