Queue Demo: enqueue, dequeue and peek : Queue « Data Structure « VB.Net

1. VB.Net
2. Data Structure
3. Queue

Queue Demo: enqueue, dequeue and peek

  
Imports System
Imports System.Collections

Public Class MainClass
    
    Shared Sub Main()
             Dim intQueue As New Queue(  )

             Dim i As Integer
             For i = 0 To 4
                 intQueue.Enqueue((i * 5))
             Next i

             Console.WriteLine("intQueue values:")
             DisplayValues(intQueue)

             Console.WriteLine("(Dequeue) {0}", intQueue.Dequeue(  ))

             Console.WriteLine("intQueue values:")
             DisplayValues(intQueue)

             Console.WriteLine("(Dequeue) {0}", intQueue.Dequeue(  ))

             Console.WriteLine("intQueue values:")
             DisplayValues(intQueue)

             Console.WriteLine("(Peek)   {0}", intQueue.Peek(  ))

             Console.WriteLine("intQueue values:")
             DisplayValues(intQueue)
   End Sub

   Public Shared Sub DisplayValues(ByVal myCollection As IEnumerable)
       Dim myEnumerator As IEnumerator = myCollection.GetEnumerator(  )
       While myEnumerator.MoveNext(  )
           Console.WriteLine("{0} ", myEnumerator.Current)
       End While
       Console.WriteLine(  )
   End Sub

End Class


           
         
    
  

Related examples in the same category

1.	Queue Item Count
2.	Simple Demo for Queue: Enqueue, Dequeue and Peek
3.	Creates a queue of strings with default capacity and uses the Enqueue method to queue five strings.
4.	The elements of the queue are enumerated, which does not change the state of the queue.
5.	The Dequeue method is used to dequeue the first string.
6.	The Peek method is used to look at the next item in the queue
7.	The ToArray method is used to create an array and copy the queue elements to it
8.	the array is passed to the Queue<(Of <(T>)>) constructor that takes IEnumerable<(Of <(T>)>)
9.	CopyTo method is used to copy the array elements beginning at the middle of the array.
10.	Create a second copy of the queue containing three null elements at the beginning.
11.	Queue Class represents a first-in, first-out collection of objects.