static void Main(string[] args)
{
// Collections can resize unlike arrays
// #region provides a way to collapse
// long blocks of code
// ---------- ARRAYLISTS ----------
#region ArrayList Code
// ArrayLists are resizable arrays
// that can hold multiple data types
ArrayList aList = new ArrayList();
aList.Add("Bob");
aList.Add(40);
// Number of items in list
Console.WriteLine("ARRAYLIST\nCount: {0}",
aList.Count);
// The capacity automatically increases
// as items are added
Console.WriteLine("Capacity: {0}",
aList.Capacity);
ArrayList aList2 = new ArrayList();
// Add an object array
aList2.AddRange(new object[] { "Mike", "Sally", "Egg" });
// Add 1 array list to another
aList.AddRange(aList2);
// You can sort the list if the types
// are the same
aList2.Sort();
aList2.Reverse();
// Insert at the 2nd position
aList2.Insert(1, "Turkey");
// Get the 1st 2 items
ArrayList range = aList2.GetRange(0, 2);
/*
* // Remove the first item
* aList2.RemoveAt(0);
*
* // Remove the 1st 2 items
* aList2.RemoveRange(0, 2);
*/
// Search for a match starting at the provided
// index. You can also find the last index
// with LastIndexOf
Console.WriteLine("Turkey Index : {0}",
aList2.IndexOf("Turkey", 0));
// Cycle through the list
foreach (object o in range)
{
Console.WriteLine(o);
}
// Convert an ArrayList into a string array
string[] myArray = (string[])aList2.ToArray(typeof(string));
// Convert a string array into an ArrayList
string[] customers = { "Bob", "Sally", "Sue" };
ArrayList custArrayList = new ArrayList();
custArrayList.AddRange(customers);
#endregion
// ---------- DICTIONARIES ----------
#region Dictionary Code
// Dictionaries store key value pairs
// To create them define the data
// type for the key and the value
Dictionary <string, string> superheroes = new Dictionary <string, string>();
superheroes.Add("Clark Kent", "Superman");
superheroes.Add("Bruce Wayne", "Batman");
superheroes.Add("Barry West", "Flash");
// Remove a key / value
superheroes.Remove("Barry West");
// Number of keys
Console.WriteLine("\nDICTIONARY\nCount : {0}",
superheroes.Count);
// Check if a key is present
Console.WriteLine("Clark Kent : {0}",
superheroes.ContainsKey("Clark Kent"));
// Get the value for the key and store it
// in a string
superheroes.TryGetValue("Clark Kent", out string test);
Console.WriteLine($"Clark Kent : {test}");
// Cycle through key value pairs
foreach (KeyValuePair <string, string> item in superheroes)
{
Console.WriteLine("{0} : {1}",
item.Key,
item.Value);
}
// Clear a dictionary
superheroes.Clear();
#endregion
// ---------- QUEUES ----------
#region Queue Code
// Queue 1st in 1st Out Collection
// Create a Queue
Queue queue = new Queue();
// Add values
queue.Enqueue(1);
queue.Enqueue(2);
queue.Enqueue(3);
// Is item in queue
Console.WriteLine("\nQUEUES\n1 in Queue : {0}",
queue.Contains(1));
// Remove 1st item from queue
Console.WriteLine("Remove 1 : {0}",
queue.Dequeue());
// Look at 1st item but don't remove
Console.WriteLine("Peek 1 : {0}",
queue.Peek());
// Copy queue to array
object[] numArray = queue.ToArray();
// Print array
Console.WriteLine(string.Join(",", numArray));
// Print queue items
foreach (object o in queue)
{
Console.WriteLine($"Queue : {o}");
}
// Clear the queue
queue.Clear();
#endregion
// ---------- STACKS ----------
#region Queue Code
// Stack Last in 1st Out Collection
// Stacks are based on a stack of dishes that you wash in a restaurant
// Create a stack
Stack stack = new Stack();
// Put items on the stack
stack.Push(1);
stack.Push(2);
stack.Push(3);
// Get but don't remove item
Console.WriteLine("\nSTACKS\nPeek 1 : {0}",
stack.Peek());
// Remove item
Console.WriteLine("Pop 1 : {0}",
stack.Pop());
// Does item exist on stack
Console.WriteLine("Contain 1 : {0}",
stack.Contains(1));
// Copy stack to array
object[] numArray2 = stack.ToArray();
// Print array
Console.WriteLine(string.Join(",", numArray2));
// Print the stack
foreach (object o in stack)
{
Console.WriteLine($"Stack : {o}");
}
// Clear stack
#endregion
Console.ReadLine();
}
static void Main(string[] args)
{
#region Fundamentos
Pessoa p1;
p1.nome = "ola1";
p1.idade = 10;
Pessoa p2;
p2.nome = "ola2";
p2.idade = 11;
Pessoa p3;
p3.nome = "ola3";
p3.idade = 10;
Pessoa[] novo = new Pessoa[20];
novo[0] = p1;
//novo[0] = "ola"; //é possível?
string[] nomes = new string[] { "ola", "ole" };
#endregion
#region ArrayList
ArrayList aux = new ArrayList();
aux.Add("luis");
aux.Add("luis");
aux.Add(12);
aux.Add(nomes);
//aux.AddRange(nomes);//adiciona elementos no final do ArrayList
aux.Add("benfica");
aux.Add(p2);
aux.Add(p1);
Console.WriteLine("Size= " + aux.Count);
aux.Remove("luis");
Console.WriteLine("Index: " + aux.IndexOf(p1).ToString());
Console.WriteLine("Existe Benfica: " + aux.Contains("benfica"));
//mostrar arrayList
for (int i = 0; i < aux.Count; i++)
{
if (aux[i].GetType() == typeof(Pessoa))
{
Pessoa p = (Pessoa)aux[i];
Console.WriteLine("{0} - {1}\n", p.nome, p.idade);
}
else
{
Console.WriteLine(aux[i].ToString());
}
}
//acrecsenta a Queue ao ArrayList
//aux.AddRange(myQueue);
ShowII(aux, '\n');
#endregion
#region Queues
// Declaring a Queue
Queue q = new Queue();
// Adds an element at the end of Queue i.e. Enqueue operation
q.Enqueue("Pankaj");
q.Enqueue(1);
q.Enqueue(10.5);
q.Enqueue(true);
q.Enqueue('A');
q.Enqueue("Benfica");
q.Enqueue("Portinho");
q.Enqueue("Braguinha");
q.Enqueue(6000000);
q.Enqueue("Tadinhos!!!");
//Get the number of elements present in the Queue
Console.WriteLine("Count : {0}", q.Count);
Console.WriteLine();
//Printing all the element of Queue
Console.WriteLine("Elements in Queue : ");
foreach (object obj in q)
{
Console.WriteLine(obj);
}
Console.WriteLine();
//Exploe ShowII
//Returns the "next" of the Queue without removing
Console.WriteLine("End element of Queue : {0}", q.Peek());
Console.WriteLine();
//Removes and Returns the end element of the Queue i.e. Dequeue operation
object TopElement = q.Dequeue();
Console.WriteLine("Removing End element of Queue = {0}\nNow End element of Queue = {1}\n", TopElement, q.Peek());
//Determines whether an element present or not in the Queue
if (q.Contains("Benfica"))
{
Console.WriteLine("O Glorioso!");
}
else
{
Console.WriteLine("Não é clube...");
}
//Copies all queue to a new Array(object)
Object[] ob = q.ToArray();
Console.WriteLine();
foreach (object obj in ob)
{
Console.WriteLine(obj);
}
//Adjust queue size...Trim the Queue
q.TrimToSize();
//More...
ShowII(q, '\n');
Console.WriteLine("(Peek) \t{0}", q.Peek());
Console.WriteLine("(Dequeue)\t{0}", q.Dequeue());
ShowII(q, '\n');
//Removes all the element from Queue
q.Clear();
Console.WriteLine();
Console.WriteLine("Count : {0}", q.Count);
Console.ReadKey();
#endregion
#region Stacks
// Declaring a stack
Stack st = new Stack();
// Inserting an element at the top of stack i.e. Push operation
st.Push("Benfica");
st.Push(1);
st.Push(10.5);
st.Push(true);
st.Push('A');
//Get the number of elements contained in the stack
Console.WriteLine("Count : {0}", st.Count);
Console.WriteLine();
//Printing all the element of stack
Console.WriteLine("Element in stack : ");
foreach (object obj in st)
{
Console.WriteLine(obj);
}
Console.WriteLine();
//Returns the topmost element of the stack without removing
Console.WriteLine("Top most element of stack : {0}", st.Peek());
Console.WriteLine();
//Removes and Returns the topmost element of the stack i.e. Pop operation
Object TopElement1 = st.Pop();
Console.WriteLine("Removing Top element of Stack = {0}\nNow Top element of stack = {1}\n", TopElement1, st.Peek());
//Determines whether an element present or not in the stack
if (st.Contains("Benfica"))
{
Console.WriteLine("O maior");
}
else
{
Console.WriteLine("Que clube estranho...");
}
//Copies the stack to a new Array(object)
Object[] ob1 = st.ToArray();
Console.WriteLine();
foreach (object obj in ob1)
{
Console.WriteLine(obj);
}
//Removes all the element from stack
st.Clear();
Console.WriteLine();
Console.WriteLine("Count : {0}", st.Count);
Console.ReadKey();
#endregion
#region OrdenarCollections
ArrayList n = new ArrayList();
n.Add(12);
n.Add(24);
n.Add(7);
n.Sort();
n.Add("ola");
//n.Add(new Pessoa());
Console.WriteLine("Antes de Ordenar");
Show(n);
//n.Sort(); //comparar do mesmo tipo...OK!
Console.ReadKey();
//n.Sort(); // Porque falha?
n.Sort(new MyComparer(SortDirecc.Asc));
Console.WriteLine("Depois de Ordenar");
Show(n);
Console.ReadKey();
//#endregion
#endregion
#region Ordenar MyArrayList
//MyArrayList m = new MyArrayList();
MyArrayList m = new MyArrayList(2); //Capacidade multiplos de 2
//m.MyArr.Add("ola");
m.MyArr.Add(p1);
m.MyArr.Add(p2);
m.MyArr.Add(p1); //A Capacidade (capacity) duplica sempre que se esgota a reservada inicialmente
//m.MyArr.Sort(
m.MyArr.Insert(0, p3); //Insere na posição 0...shift rigth das existentes
m.MyArr.Remove(p1);
m.MyArr.Add(p1);
//m.MyArr.Remove(p1);
//Antes de ordenar
m.ShowCollection();
m.MyArr.Sort(new MyComparer()); //para ordenar é necessário um "IComparer
//depois de ordenar
m.ShowCollection();
Console.WriteLine("Existe P1? " + m.MyArr.Contains(p1).ToString());
Console.WriteLine("Em que posição está P2?" + m.MyArr.IndexOf(p2).ToString());
Console.WriteLine("Capacidade: " + m.MyArr.Capacity.ToString());
Console.WriteLine("Elementos: " + m.MyArr.Count.ToString());
Console.WriteLine(m.ShowCollectionAdvanced().ToString());
#endregion
#region Hashtable I
Hashtable ht = new Hashtable();
//inicializar
//Hashtable ht = new Hashtable() { { 1, 2 }, { 2, "ok" } };
//Adding item into HashTable
ht.Add(1, "Benfica");
ht.Add(12, "Porto");
ht.Add(8, "Braga");
ht.Add(4, "Outro");
Console.WriteLine("Count : {0}", ht.Count);
if (ht.ContainsValue("Benfica"))
{
Console.WriteLine("Benfica existe na HashTable");
}
else
{
ht.Add(5, "Benfica");
}
//Get a collection of values
Console.WriteLine("Valores :");
ICollection values = ht.Values;
foreach (string str in values)
{
Console.WriteLine(str);
}
//Get a collection of Keys
Console.WriteLine("Chaves:");
ICollection keys = ht.Keys;
foreach (int i in keys)
{
Console.WriteLine("Key: " + i + " Value: " + ht[i]);
}
;
ht.Remove(3);
ht.Clear();
// Put keys in an ArrayList.
ArrayList arrayList = new ArrayList(ht.Keys);
foreach (int key in arrayList)
{
Console.WriteLine(key);
}
Console.ReadKey();
#endregion
#region HashTable II
MyHashTable h = new MyHashTable();
//h.MyHash.Add(p1.nome, p1);
//h.MyHash.Add(p2.nome, p2);
//Console.WriteLine(((Pessoa)(h.MyHash[p1.nome])).nome);
//Console.WriteLine("Contem chave ? " + h.MyHash.ContainsKey(p3.nome));
//Console.WriteLine("Número de chaves ? " + h.MyHash.Count.ToString());
//h.MyHash.Clear() //limpa hash
Console.WriteLine(h.ShowHash());
Console.WriteLine(h.MyGetHashCode(p1.nome, 50));
Console.WriteLine(h.MyGetHashCode(p2.nome, 50));
Console.WriteLine(h.MyGetHashCode(p3.nome, 50));
h.MyInsert(p1);
h.MyInsert(p2);
h.MyInsert(p3);
h.MyInsert(p1); //colisão!
#endregion
#region Arrays
Array a = Array.CreateInstance(typeof(string), 20);
a.SetValue("Benfica", 0);
a.SetValue("Porto", 1);
string s1 = (string)a.GetValue(0);
#endregion
#region SortedList
Console.WriteLine("\nSortedList\n");
SortedList sl = new SortedList();
sl.Add(1, "Benfica");
sl.Add(3, "Porto");
sl.Add(4, "Braguinha");
sl.Add(2, "Sporting");
Console.WriteLine("Número de Elementos : {0}", sl.Count);
if (sl.ContainsValue("Benfica"))
{
Console.WriteLine("Benfica é o maior");
}
else
{
sl.Add(1, "Benfica");
}
Console.WriteLine("Valor e chave na posição 3 = {0} , {1}", sl.GetByIndex(3), sl.GetKey(3));
//Percorre a SortedList...mostra todas as chaves
Console.Write("Chaves: ");
foreach (int i in sl.Keys)
{
Console.Write(i + " ");
}
//Agrupa pares (k,v)
IList keys1 = sl.GetKeyList();
IList values1 = sl.GetValueList();
Console.WriteLine("\nValores :");
foreach (object obj in values1)
{
Console.WriteLine(obj);
}
//Or
Console.WriteLine("\nChaves: Valores :");
foreach (object obj in keys1)
{
Console.WriteLine("Chave: " + obj + " Valor: " + sl[obj]);
}
Console.WriteLine("Index do Porto é : {0}", sl.IndexOfValue("Porto"));
//Mostra todos os pares (k,v)
foreach (object obj in keys1)
{
Console.WriteLine("Key: {0} - Valor: {1}\n", obj, sl[obj]);
}
//Remover
//remove elemento com chave 3
sl.Remove(3);
// Remove um elemento num determinado index
sl.RemoveAt(2); //?
Console.ReadKey();
#endregion
#region Carros
ArrayList carros = new ArrayList();
carros.Add(new Carro("19-12-12"));
carros.Add(new Carro("12-12-13"));
carros.Add(new Carro("13-12-12"));
foreach (Carro c in carros)
{
Console.WriteLine("Mat= " + c.matricula);
}
carros.Sort(new MyComparer());
foreach (Carro c in carros)
{
Console.WriteLine("Mat= " + c.matricula);
}
#endregion
}