VBA学习笔记3-数据结构类型SortedList
在VBA中,虽然没有内置的SortedList数据类型,但可以通过使用Collection对象或自定义类来实现类似的功能。SortedList通常用于按键值对排序和检索数据。以下是一个示例,演示如何使用Collection对象来模拟SortedList的功能:
Sub SortedListExample() Dim sortedList As New Collection Dim key As String Dim value As String ' 添加键值对到SortedList sortedList.Add "apple", "A" sortedList.Add "banana", "B" sortedList.Add "orange", "O" ' 按键排序 For Each key In SortCollection(sortedList) value = sortedList(key) Debug.Print key & ": " & value Next key End Sub Function SortCollection(col As Collection) As Variant Dim arr() As String Dim i As Integer ReDim arr(1 To col.Count) For i = 1 To col.Count arr(i) = col(i) Next i QuickSort arr, LBound(arr), UBound(arr) SortCollection = arr End Function Sub QuickSort(arr As Variant, left As Integer, right As Integer) Dim i As Integer, j As Integer Dim pivot As String, temp As String i = left j = right pivot = arr((left + right) \ 2) While i <= j While arr(i) < pivot i = i + 1 Wend While arr(j) > pivot j = j - 1 Wend If i <= j Then temp = arr(i) arr(i) = arr(j) arr(j) = temp i = i + 1 j = j - 1 End If Wend If left < j Then QuickSort arr, left, j If i < right Then QuickSort arr, i, right End Sub
在上面的示例中,我们使用Collection对象模拟了一个SortedList,并实现了按键排序的功能。通过添加键值对到Collection中,并使用自定义的QuickSort函数对键进行排序,最终按照排序后的键顺序输出键值对。这个示例展示了SortedList的常见用途之一,即按键排序和检索数据。
希望这个示例对你有帮助!如果有任何问题或者需要进一步帮助,请随时告诉我。