VB.Net/Data Structure/Tree Yours

Our Tree Structure

<source lang="vbnet"> Imports System Public Class MainClass

 Public Shared Sub Main()
     Dim tree As Tree = New Tree()
     Dim insertValue As Integer
     Dim i As Integer
     Dim randomNumber As Random = New Random()
     For i = 1 To 10
        insertValue = randomNumber.Next(100)
        Console.Write(insertValue & " ")
        tree.InsertNode(insertValue)
     Next
     Console.WriteLine("Preorder Traversal")
     tree.PreorderTraversal()
     Console.WriteLine("Inorder Traversal")
     tree.InorderTraversal()
     Console.WriteLine("Postorder Traversal")
     tree.PostorderTraversal()
 End Sub

End Class Public Class TreeNode

  Private mLeftNode As TreeNode
  Private mData As Integer
  Private mRightNode As TreeNode
  Public Sub New(ByVal nodeData As Integer)
     mData = nodeData
     mRightNode = Nothing 
     LeftNode = Nothing 
  End Sub 
  Public Property LeftNode() As TreeNode
     Get
        Return mLeftNode
     End Get
     Set(ByVal value As TreeNode)
        mLeftNode = value
     End Set
  End Property 
  Public Property Data() As Integer
     Get
        Return mData
     End Get
     Set(ByVal value As Integer)
        mData = value
     End Set
  End Property 
  Public Property RightNode() As TreeNode
     Get
        Return mRightNode
     End Get
     Set(ByVal value As TreeNode)
        mRightNode = value
     End Set
  End Property 
  Public Sub Insert(ByVal insertValue As Integer)
     If insertValue < mData Then
        If mLeftNode Is Nothing Then
           LeftNode = New TreeNode(insertValue)
        Else
           LeftNode.Insert(insertValue)
        End If
     ElseIf insertValue > mData Then
        If RightNode Is Nothing Then
           RightNode = New TreeNode(insertValue)
        Else
           RightNode.Insert(insertValue)
        End If
     End If
  End Sub 

End Class

Public Class Tree

  Private root As TreeNode
  Public Sub New()
     root = Nothing
  End Sub " New
  Public Sub InsertNode(ByVal insertValue As Integer)
     SyncLock (Me)
        If root Is Nothing Then
           root = New TreeNode(insertValue)
        Else 
           root.Insert(insertValue)
        End If
     End SyncLock
  End Sub
  Public Sub PreorderTraversal()
     SyncLock (Me)
        PreorderHelper(root)
     End SyncLock
  End Sub 
  Private Sub PreorderHelper(ByVal node As TreeNode)
     If node Is Nothing Then
        Return
     End If
     Console.Write(node.Data & " ")
     PreorderHelper(node.LeftNode)
     PreorderHelper(node.RightNode)
  End Sub 
  Public Sub InorderTraversal()
     SyncLock (Me)
        InorderHelper(root)
     End SyncLock
  End Sub 
  Private Sub InorderHelper(ByVal node As TreeNode)
     If node Is Nothing Then
        Return
     End If
     InorderHelper(node.LeftNode)
     Console.Write(node.Data & " ")
     InorderHelper(node.RightNode)
  End Sub 
  Public Sub PostorderTraversal()
     SyncLock (Me)
        PostorderHelper(root)
     End SyncLock
  End Sub 
  Private Sub PostorderHelper(ByVal node As TreeNode)
     If node Is Nothing Then
        Return
     End If
     PostorderHelper(node.LeftNode)
     PostorderHelper(node.RightNode)
     Console.Write(node.Data & " ")
  End Sub 

End Class

      </source>