动态数组有关问题

动态数组问题
程序源码如下
Option Explicit

Private Sub Command1_Click()
Dim Web As Object
Dim Arr(), Brr() As String
Dim a, i As Integer
  For Each Web In WebBrowser1.Document.All
  If UCase(Web.tagName) = "A" Then
  ReDim Preserve Arr(a)
  Arr(a) = Web.href
  a = a + 1
  End If
  Next Web
  For i = 0 To a - 1
  Debug.Print Arr(i)
  Next i
End Sub

Private Sub Form_Load()
WebBrowser1.Navigate "http://www.baidu.com/s?wd=123"
End Sub

通过打印结果发现数组有不少重复的，请问如果在添加的时候做个筛选，如果发现数组中有想同的就不添加



[解决办法]
其实用links直接就可以得到链接的集合。

VB code

Option ExplicitPrivate Sub Command1_Click()    Dim lnk As Object    Dim Arr() As String    Dim a As Integer, s$        For Each lnk In WebBrowser1.Document.links        If InStr(s, lnk.href & vbCrLf) = 0 Then            ReDim Preserve Arr(a)            Arr(a) = lnk.href            a = a + 1            s = s & lnk.href & vbCrLf        End If    Next    For a = 0 To UBound(Arr)        Debug.Print Arr(a)    NextEnd SubPrivate Sub Form_Load()    WebBrowser1.Navigate "http://www.baidu.com/s?wd=123"End Sub