public static void Main(string[] args)
{ //1
ArrayList list = new ArrayList();
Student student = new Student("Vasya", 18);
Random random = new Random();
string myString = "Here's a string";
for (var i = 0; i < 5; i++)
{
list.Add(random.Next(0, 100));
}
list.Add(myString);
list.Add(student);
list.RemoveAt(0);
Console.WriteLine("Our Arraylist collection:\n");
foreach (object o in list)
{
Console.WriteLine(o);
}
Console.WriteLine($"\nCount of elements: {list.Count}");
for (var i = 0; i < list.Count; i++)
{
if (list[i] == myString)
{
Console.WriteLine("Строка myString найдена!");
}
}
//2
MyDictionary <double, string> dictionary_1 = new MyDictionary <double, string>();
double[] keys = { 1, 2.1 };
dictionary_1.Add(1.5, "Hello");
dictionary_1.Add(2.1, "World");
dictionary_1.Add(1, "Banana");
dictionary_1.Delete(1);
foreach (KeyValuePair <double, string> pair in dictionary_1)
{
Console.WriteLine("{0}, {1}", pair.Key, pair.Value);
}
MyQueue <string> queue_1 = new MyQueue <string>();
foreach (KeyValuePair <double, string> pair in dictionary_1)
{
queue_1.Add(pair.Value);
}
foreach (string item in queue_1)
{
Console.WriteLine(item);
}
string s = "Hello";
foreach (string item in queue_1)
{
if (item == s)
{
Console.WriteLine("An item has been finded in a queue");
}
}
//3
MyDictionary <double, Student> dictionary_2 = new MyDictionary <double, Student>();
Student student_1 = new Student("Petya", 20);
Student student_2 = new Student("Masha", 17);
dictionary_2.Add(1, student_1);
dictionary_2.Add(2, student_2);
MyQueue <Student> queue_2 = new MyQueue <Student>();
foreach (KeyValuePair <double, Student> pair in dictionary_2)
{
queue_2.Add(pair.Value);
}
foreach (Student item in queue_2)
{
Console.WriteLine(item);
}
Student student_3 = new Student("Petya", 20);
foreach (Student item in queue_2)
{
if ((item.Name == student_3.Name) && (item.Age == student_3.Age))
{
Console.WriteLine("Студент Петя уже существует!");
}
}
//4
ObservableCollection <Student> students = new ObservableCollection <Student>
{
student_1,
student_2
};
students.CollectionChanged += Students_CollectionChanged;
students.Add(student_3);
students.Remove(student_2);
Console.ReadKey();
}
