private static void RunDesignPattern_ObserverDesignPattern()
{
Console.WriteLine("Start (10) Run Design Pattern - Observer Design Pattern");
var description =
"The observer design pattern enables a subscriber to register with and receive notifications from a provider. It is suitable for any scenario that requires push-based notification." + "\n" +
"目的：觀察者模式是軟體設計模式的一種。在此種模式中，一個目標物件管理所有相依於它的觀察者物件，並且在它本身的狀態改變時主動發出通知。這通常透過呼叫各觀察者所提供的方法來實現。此種模式通常被用來實時事件處理系統。";
Console.WriteLine(description);
Console.WriteLine("------------------------------------------------------------------------");
BaggageHandler provider = new BaggageHandler();
ArrivalsMonitor observer1 = new ArrivalsMonitor("BaggageClaimMonitor1");
ArrivalsMonitor observer2 = new ArrivalsMonitor("SecurityExit");
provider.BaggageStatus(712, "Detroit", 3);
Console.WriteLine("BaggageClaimMonitor1 Subscribe");
observer1.Subscribe(provider);
provider.BaggageStatus(712, "Kalamazoo", 3);
provider.BaggageStatus(400, "New York-Kennedy", 1);
provider.BaggageStatus(712, "Detroit", 3);
Console.WriteLine("SecurityExit Subscribe");
observer2.Subscribe(provider);
provider.BaggageStatus(511, "San Francisco", 2);
provider.BaggageStatus(712);
Console.WriteLine("SecurityExit Unsubscribe");
observer2.Unsubscribe();
provider.BaggageStatus(400);
provider.LastBaggageClaimed();
Console.WriteLine("Done. 請按任意鍵繼續");
Console.ReadLine();
}
public static void Main()
{
BaggageHandler provider = new BaggageHandler();
ArrivalsMonitor observer1 = new ArrivalsMonitor("BaggageClaimMonitor1");
ArrivalsMonitor observer2 = new ArrivalsMonitor("SecurityExit");
provider.BaggageStatus(712, "Detroit", 3);
observer1.Subscribe(provider);
provider.BaggageStatus(712, "Kalamazoo", 3);
provider.BaggageStatus(400, "New York-Kennedy", 1);
provider.BaggageStatus(712, "Detroit", 3);
observer2.Subscribe(provider);
provider.BaggageStatus(511, "San Francisco", 2);
provider.BaggageStatus(712);
observer2.Unsubscribe();
provider.BaggageStatus(400);
provider.LastBaggageClaimed();
// Wait for user
Console.ReadKey();
}
static void Main()
{
// First example
ConcreteSubject s = new ConcreteSubject();
s.Attach(new ConcreteObserver(s, "x"));
s.Attach(new ConcreteObserver(s, "y"));
s.Attach(new ConcreteObserver(s, "z"));
s.SubjectState = "abc";
s.Notify();
IBM ibm = new IBM("IBM", 120.00);
ibm.Attach(new Investor("Sorros"));
ibm.Attach(new Investor("Berkshire"));
ibm.Price = 120.10;
ibm.Price = 121.00;
ibm.Price = 120.50;
ibm.Price = 120.75;
ibm.Notify();
// Second example
BaggageHandler provider = new BaggageHandler();
ArrivalsMonitor observer1 = new ArrivalsMonitor("BaggageClaimMonitor1");
ArrivalsMonitor observer2 = new ArrivalsMonitor("SecurityExit");
provider.BaggageStatus(712, "Detroit", 3);
observer1.Subscribe(provider);
provider.BaggageStatus(712, "Kalamazoo", 3);
provider.BaggageStatus(400, "New York-Kennedy", 1);
provider.BaggageStatus(712, "Detroit", 3);
observer2.Subscribe(provider);
provider.BaggageStatus(511, "San Francisco", 2);
provider.BaggageStatus(712);
observer2.Unsubscribe();
provider.BaggageStatus(400);
provider.LastBaggageClaimed();
// Third example
var weatherData = new WeatherData();
var forecastDisplay = new ForecastDisplay(weatherData);
var heatIndexDisplay = new HeatIndexDisplay(weatherData);
weatherData.setMeasurements(80, 65, 30.4f);
}
public static void Main()
{
BaggageHandler provider = new BaggageHandler();
ArrivalsMonitor observer1 = new ArrivalsMonitor("BaggageClaimMonitor1");
ArrivalsMonitor observer2 = new ArrivalsMonitor("SecurityExit");
provider.BaggageStatus(712, "Detroit", 3);
observer1.Subscribe(provider);
provider.BaggageStatus(712, "Kalamazoo", 3);
provider.BaggageStatus(400, "New York-Kennedy", 1);
provider.BaggageStatus(712, "Detroit", 3);
observer2.Subscribe(provider);
provider.BaggageStatus(511, "San Francisco", 2);
provider.BaggageStatus(712);
observer2.Unsubscribe();
provider.BaggageStatus(400);
provider.LastBaggageClaimed();
Console.ReadLine();
}
static void Main(string[] args)
{
#region Design Patterns
#region Decorator Pattern Example
Espresso beverage1 = new Espresso();
Console.WriteLine("Double Mocha Esspresso");
Mocha d1 = new Mocha(beverage1);
Mocha d2 = new Mocha(d1);
Console.WriteLine(d2.Cost() + " " + d2.Description);
Console.WriteLine("\n House Blend, Moch, Whip");
HouseBlend beverage2 = new HouseBlend();
Mocha d3 = new Mocha(beverage2);
Whip d4 = new Whip(d3);
Console.WriteLine(d4.Cost() + " " + d4.Description);
#endregion
#region Factory Pattern
// Note: constructors call Factory Method
Document[] documents = new Document[2];
documents[0] = new Resume();
documents[1] = new Report();
// Display document pages
foreach (Document document in documents)
{
Console.WriteLine("\n" + document.GetType().Name + "--");
foreach (Page page in document.Pages)
{
Console.WriteLine(" " + page.GetType().Name);
}
}
#endregion
#region Abstract Factory Pattern
ContinentFactory africa = new AfricaFactory();
AnimalWorld world = new AnimalWorld(africa);
world.RunFoodChain();
ContinentFactory america = new AmericaFactory();
world = new AnimalWorld(america);
world.RunFoodChain();
#endregion
#region Singleton
Console.WriteLine(Singleton.Math.Instance.add(34, 3));
#endregion
#region Obsever Pattern
BaggageHandler provider = new BaggageHandler();
ArrivalsMonitor observer1 = new ArrivalsMonitor("BaggageClaimMonitor1");
ArrivalsMonitor observer2 = new ArrivalsMonitor("SecurityExit");
provider.BaggageStatus(712, "Detroit", 3);
observer1.Subscribe(provider);
provider.BaggageStatus(712, "Kalamazoo", 3);
provider.BaggageStatus(400, "New York-Kennedy", 1);
provider.BaggageStatus(712, "Detroit", 3);
observer2.Subscribe(provider);
provider.BaggageStatus(511, "San Francisco", 2);
provider.BaggageStatus(712);
observer2.Unsubscribe();
provider.BaggageStatus(400);
provider.LastBaggageClaimed();
#endregion
#region Strategy Pattern
SortedList studentRecords = new SortedList();
studentRecords.Add("samual");
studentRecords.Add("Jimmy");
studentRecords.Add("Sandra");
studentRecords.Add("Vivek");
studentRecords.Add("Anna");
studentRecords.SetSortStrategy(new QuickSort());
studentRecords.Sort();
studentRecords.SetSortStrategy(new ShellSort());
studentRecords.Sort();
studentRecords.SetSortStrategy(new MergeSort());
studentRecords.Sort();
#endregion
#region Composite Pattern
CompositeElement root = new CompositeElement("Picture");
root.Add(new PrimitiveElement("Red Line"));
root.Add(new PrimitiveElement("Blue Circle"));
root.Add(new PrimitiveElement("Green Box"));
CompositeElement comp = new CompositeElement("Two Circles");
comp.Add(new PrimitiveElement("Black Circle"));
comp.Add(new PrimitiveElement("White Circle"));
root.Add(comp);
PrimitiveElement pe = new PrimitiveElement("Yellow Line");
root.Add(pe);
root.Remove(pe);
root.Display(1);
#endregion
#region Command Pattern
User user = new User();
user.Compute('+', 100);
user.Compute('-', 50);
user.Compute('*', 10);
user.Compute('/', 2);
user.Undo(4);
user.Redo(3);
#endregion
#region COR (Chain of Responsibility)
// Setup Chain of Responsibility
Handler h1 = new ConcreteHandlerA();
Handler h2 = new ConcreteHandlerB();
Handler h3 = new ConcreteHandlerC();
h2.SetSuccessor(h3);
h1.SetSuccessor(h2);
// Generate and process request
int[] requests = { 2, 5, 14, 22, 18, 3, 27, 20 };
foreach (int request in requests)
{
h1.HandleRequest(request);
}
#endregion
#endregion
#region AD
#region List
MyArrayList list = new MyArrayList(5);
//setting values
list.add(1);
list.add(2);
list.add(3);
list.add(4);
list.add(5);
Console.WriteLine(list.get(2) + " staat op positie 2");
//testing print function
list.print();
//testing set function
list.set(2, 10); //true
list.print();
list.set(10, 2); //false
//occurences test
list.set(0, 2);
list.set(4, 2);
list.countOccurences(2);
//testing clear
list.clear();
list.print();
MyLinkedList <int> linkedList = new MyLinkedList <int>();
linkedList.addFirst(1);
linkedList.addFirst(12);
linkedList.addFirst(3);
linkedList.addFirst(4);
linkedList.addFirst(5);
linkedList.insert(0, 123);
linkedList.remove(12);
MyLinkedList <int> .printList(linkedList);
Console.ReadLine();
#endregion
#region Graph
Graph g = new Graph();
try
{
StreamReader d = new StreamReader(Console.ReadLine());
string line;
while ((line = d.ReadLine()) != null)
{
Console.WriteLine(line);
string[] words = line.Split(' ');
try
{
if (words.Length > 3)
{
Console.WriteLine("Skipping bad line: " + line);
continue;
}
string source = words[0];
string dest = words[1];
int cost = Int32.Parse(words[2]);
g.addEdge(source, dest, cost);
}
catch (FormatException e)
{
Console.WriteLine("Skipping bad line: " + line);
Console.WriteLine(e);
}
}
}
catch (Exception e) { Console.WriteLine(e); }
//while (processRequest(g));
#endregion
#region Binairy tree
string seperator = "-----------------------------------------------------------------------";
Console.WriteLine(seperator);
Console.WriteLine("Binary Tree Basic: ");
BinaryNode <int> NodeA = new BinaryNode <int>(2);
BinaryNode <int> NodeB = new BinaryNode <int>(5);
BinaryNode <int> NodeC = new BinaryNode <int>(6);
BinaryNode <int> NodeD = new BinaryNode <int>(3);
BinaryNode <int> NodeE = new BinaryNode <int>(7);
BinaryNode <int> NodeF = new BinaryNode <int>(10);
BinaryNode <int> NodeG = new BinaryNode <int>(1);
NodeE.setRight(NodeG);
NodeA.setLeft(NodeC);
NodeA.setRight(NodeD);
NodeB.setLeft(NodeE);
NodeB.setRight(NodeF);
BinaryTree <int> tree = new BinaryTree <int>(12);
tree.Root.setLeft(NodeA);
tree.Root.setRight(NodeB);
tree.printPreOrder();
Console.ReadLine();
Console.WriteLine(seperator);
Console.WriteLine("Binary Search Tree: ");
BinaryTree <int> BST = new BinaryTree <int>();
BST.Insert(5);
BST.Insert(1254);
BST.Insert(252);
BST.Insert(378);
BST.Insert(45);
BST.Insert(668);
BST.Insert(71);
BST.Insert(8);
BST.Insert(942);
//fail test
BST.Insert(1);
Console.WriteLine(seperator);
Console.WriteLine("Printing in order: ");
BST.printInOrder();
Console.ReadLine();
Console.WriteLine(seperator);
Console.WriteLine("Finding Min:");
Console.WriteLine(BST.FindMin());
Console.ReadLine();
Console.WriteLine(seperator);
Console.WriteLine("Finding Max: ");
Console.WriteLine(BST.FindMax());
Console.ReadLine();
Console.WriteLine(seperator);
Console.WriteLine("Finding value 5:");
Console.WriteLine(BST.Find(5));
Console.ReadLine();
Console.WriteLine(seperator);
Console.WriteLine("Removing 5");
BST.Remove(5);
Console.ReadLine();
Console.WriteLine(seperator);
Console.WriteLine("Printing in order: ");
BST.printInOrder();
Console.ReadLine();
Console.WriteLine(seperator);
Console.WriteLine("Removing Min");
BST.RemoveMin();
Console.ReadLine();
Console.WriteLine(seperator);
Console.WriteLine("Printing in order: ");
BST.printInOrder();
Console.ReadLine();
#endregion
#region Max heap
MaxHeap theHeap = new MaxHeap(21);
theHeap.Insert(40);
theHeap.Insert(70);
theHeap.Insert(20);
theHeap.Insert(60);
theHeap.Insert(50);
theHeap.Insert(100);
theHeap.Insert(82);
theHeap.Insert(35);
theHeap.Insert(90);
theHeap.Insert(10);
theHeap.DisplayHeap();
Console.WriteLine("Inserting a new node with value 120");
theHeap.Insert(120);
theHeap.DisplayHeap();
Console.WriteLine("Removing max element");
theHeap.Remove();
theHeap.DisplayHeap();
Console.WriteLine("Changing root to 130");
theHeap.HeapIncreaseDecreaseKey(0, 130);
theHeap.DisplayHeap();
Console.WriteLine("Changing root to 5");
theHeap.HeapIncreaseDecreaseKey(0, 5);
theHeap.DisplayHeap();
Console.ReadLine();
#endregion
#region Min heap
int[] arrA = { 50, 2, 30, 7, 40, 4, 10, 16, 12 };
Console.WriteLine("Original Array : ");
for (int i = 0; i < arrA.Length; i++)
{
Console.Write(" " + arrA[i]);
}
MinHeap m = new MinHeap(arrA.Length);
Console.WriteLine("\nMin-Heap : ");
m.createHeap(arrA);
m.display();
Console.WriteLine("Extract Min :");
for (int i = 0; i < arrA.Length; i++)
{
Console.Write(" " + m.extractMin());
}
#endregion
#region Sorting
Console.WriteLine();
int[] tmpArray = { 0, 15, 48, 60, 88, 123, 1, 5, 4, 12, 99, 11, 200, 41 };
Console.WriteLine(seperator);
Console.WriteLine("Base Array: ");
SortingAlgorithms.Show_array_elements(tmpArray);
Console.WriteLine(seperator);
var watch = System.Diagnostics.Stopwatch.StartNew();
SortingAlgorithms.ShellSort(tmpArray);
watch.Stop();
var elapsedMs = watch.ElapsedMilliseconds;
Console.WriteLine("Shell sorted Array in: " + elapsedMs + "ms");
SortingAlgorithms.Show_array_elements(tmpArray);
Console.WriteLine(seperator);
Console.ReadKey();
tmpArray = new[] { 0, 15, 48, 60, 88, 123, 1, 5, 4, 12, 99, 11, 200, 41 };
Console.WriteLine("Base Array: ");
SortingAlgorithms.Show_array_elements(tmpArray);
Console.WriteLine(seperator);
watch = System.Diagnostics.Stopwatch.StartNew();
SortingAlgorithms.PerformInsertionSort(tmpArray);
watch.Stop();
elapsedMs = watch.ElapsedMilliseconds;
Console.WriteLine("Insertion sorted Array in: " + elapsedMs + "ms");
SortingAlgorithms.Show_array_elements(tmpArray);
Console.WriteLine(seperator);
Console.ReadKey();
tmpArray = new[] { 0, 15, 48, 60, 88, 123, 1, 5, 4, 12, 99, 11, 200, 41 };
Console.WriteLine("Base Array: ");
SortingAlgorithms.Show_array_elements(tmpArray);
Console.WriteLine(seperator);
watch = System.Diagnostics.Stopwatch.StartNew();
SortingAlgorithms.MergeSort(tmpArray);
watch.Stop();
elapsedMs = watch.ElapsedMilliseconds;
Console.WriteLine("Merge sorted Array in: " + elapsedMs + "ms");
SortingAlgorithms.Show_array_elements(tmpArray);
Console.WriteLine(seperator);
Console.ReadKey();
tmpArray = new[] { 0, 15, 48, 60, 88, 123, 1, 5, 4, 12, 99, 11, 200, 41, 46 };
Console.WriteLine("Base Array: ");
SortingAlgorithms.Show_array_elements(tmpArray);
Console.WriteLine(seperator);
watch = System.Diagnostics.Stopwatch.StartNew();
SortingAlgorithms.QuickSort(tmpArray, 0, tmpArray.Length - 1);
watch.Stop();
elapsedMs = watch.ElapsedMilliseconds;
Console.WriteLine("Quick sorted Array in: " + elapsedMs + "ms");
SortingAlgorithms.Show_array_elements(tmpArray);
Console.WriteLine(seperator);
Console.ReadKey();
#endregion
#endregion
Console.ReadKey();
}