public static void TestGetEnumerator()
{
MyCollection collBase = CreateCollection(100);
IEnumerator enumerator = collBase.GetEnumerator();
Assert.NotNull(enumerator);
int count = 0;
while (enumerator.MoveNext())
{
Assert.Equal(collBase[count], enumerator.Current);
count++;
}
Assert.Equal(collBase.Count, count);
}
static void Main()
{
MyCollection collection = new MyCollection(10);
foreach (int item in collection)
{
Console.Write(item + " ");
}
Console.WriteLine();
////////////////////////////////////////////////
for (AlexEnumerator tmp = collection.GetEnumerator(); tmp.MoveNext();)
{
int item = tmp.Current;
Console.Write(item + " ");
}
Console.WriteLine();
}
public static void TestGetEnumerator_Invalid()
{
MyCollection collBase = CreateCollection(100);
IEnumerator enumerator = collBase.GetEnumerator();
// Index < 0
Assert.Throws <InvalidOperationException>(() => enumerator.Current);
// Index >= dictionary.Count
while (enumerator.MoveNext())
{
;
}
Assert.Throws <InvalidOperationException>(() => enumerator.Current);
Assert.False(enumerator.MoveNext());
// Current throws after resetting
enumerator.Reset();
Assert.True(enumerator.MoveNext());
enumerator.Reset();
Assert.Throws <InvalidOperationException>(() => enumerator.Current);
}
static void Main(string[] args)
{
Son o1 = new Son(5);
Dad o3 = new OtherSon();
Dad o2 = o1;
// o1 = o3;
// o1 = (Son)o3;
o1 = o3 is Son ? (Son)o3 : null;
o1 = o3 as Son;
o1 = o3 as Son;
Console.WriteLine(o1);
OtherSon o4 = new OtherSon();
Console.WriteLine("======================");
o2.F();
o4.F();
o3.F();
MyClass[] myObjects = { 5, 4, 3, 2, 1 };
Array.Sort(myObjects);
foreach (var o in myObjects)
{
Console.Write(" " + o.Number);
}
Console.WriteLine();
//Console.WriteLine(o1.G<char, int>(5));
MyClass o5 = 10;
IComparable <MyClass> o6 = o5;
Console.WriteLine(o6.CompareTo(new MyClass()
{
Number = 1
}));
MyCollection coll = new MyCollection();
Console.WriteLine("###################");
IEnumerator iter = coll.GetEnumerator();
while (iter.MoveNext())
{
Console.Write(iter.Current);
}
Console.WriteLine();
Console.WriteLine("###################");
foreach (var element in coll)
{
if (element.Number > 5)
{
break;
}
Console.Write(element.Number);
}
Console.WriteLine();
int counter = 15;
foreach (int a in ArithSeq(1, 2))
{
if (--counter == 0)
{
break;
}
Console.Write(" " + a);
}
Console.WriteLine();
}
public static void Main(string[] args)
{
//1* Implement double LinkedList for a Person class (which contains Id, Name , Location properties) and use enumerator to
// iterate through each item and print the values on console. Note: Dont not use any default classes, only use either IEnumerable/IEnumerator.
Myenumarable enumarableObj = new Myenumarable ();
var enumarator = enumarableObj.GetEnumerator ();
while (enumarator.MoveNext ()) {
Person person = (Person)enumarator.Current;
Console.WriteLine ("Person ID: {0}, Name: {1}, Location: {2}",person.ID, person.Name, person.Location);
}
//2. Implement IList<T> interface and perform operations to add, remove, contains, clear all.
MyCollection<int> myCollection = new MyCollection<int>();
myCollection.Add (1);
myCollection.Add (2);
myCollection.Add (3);
var enumarator1 = myCollection.GetEnumerator();
while (enumarator1.MoveNext ()) {
Console.WriteLine (enumarator1.Current);
}
//4. Using .Net provided List<T> and Dictionary<Tkey,TValue>, perform operations for Add,AddRange, Remove, Contains, InsertAt, Clear.
MyCollection<string> myCollection4 = new MyCollection<string>();
myCollection4.Add ("John");
myCollection4.Add ("Lessy");
myCollection4.Add ("Clair");
var enumarator4 = myCollection4.GetEnumerator();
while (enumarator4.MoveNext ()) {
Console.WriteLine (enumarator4.Current);
}
myCollection4.Remove ("Lessy");
var enumarator41 = myCollection4.GetEnumerator();
while (enumarator41.MoveNext ()) {
Console.WriteLine (enumarator41.Current);
}
//3* Implement stack and Queue using array as backing field in the class.
stack st = new stack();
while (true)
{
Console.Clear();
Console.WriteLine("\nStack MENU(size -- 10)");
Console.WriteLine("1. Add an element");
Console.WriteLine("2. See the Top element.");
Console.WriteLine("3. Remove top element.");
Console.WriteLine("4. Display stack elements.");
Console.WriteLine("5. Exit");
Console.Write("Select your choice: ");
int choice = Convert.ToInt32(Console.ReadLine());
switch (choice)
{
case 1:
Console.WriteLine("Enter an Element : ");
st.Push(Console.ReadLine());
break;
case 2: Console.WriteLine("Top element is: {0}", st.Peek());
break;
case 3: Console.WriteLine("Element removed: {0}", st.Pop());
break;
case 4: st.Display();
break;
case 5: System.Environment.Exit(1);
break;
}
Console.ReadKey();
}
}
