VBA 按值对集合进行排序

Question

我下面有 VBA 合集

我想按值排序，这样集合将在最高索引位置以最高双精度值结束（即 "e" 值 14 在第一个索引中，"c"值 10 是第二个，等等）。这怎么可能？

Public Function SortCollection(ByVal c As Collection) As Collection
    Dim n As Long: n = c.Count

    If n = 0 Then
        Set SortCollection = New Collection
    Exit Function

    ReDim Index(0 To n - 1) As Long ' allocate index array
    Dim i As Long, m As Long

    For i = 0 To n - 1: Index(i) = i + 1: Next ' fill index array

    For i = n \ 2 - 1 To 0 Step -1 ' generate ordered heap
        Heapify c, Index, i, n
    Next

    For m = n To 2 Step -1 ' sort the index array
        Exchange Index, 0, m - 1 ' move highest element to top
        Heapify c, Index, 0, m - 1
    Next

    Dim c2 As New Collection
    For i = 0 To n - 1 ' fill output collection
         c2.Add c.item(Index(i))
    Next

    Set SortCollection = c2

   End Function

Private Sub Heapify(ByVal c As Collection, Index() As Long, ByVal i1 As Long, ByVal n As Long)
   ' Heap order rule: a[i] >= a[2*i+1] and a[i] >= a[2*i+2]
   Dim nDiv2 As Long: nDiv2 = n \ 2
   Dim i As Long: i = i1
   Do While i < nDiv2
      Dim k As Long: k = 2 * i + 1
      If k + 1 < n Then
         If c.item(Index(k)) < c.item(Index(k + 1)) Then k = k + 1
         End If
      If c.item(Index(i)) >= c.item(Index(k)) Then Exit Do
      Exchange Index, i, k
      i = k
      Loop
   End Sub

Private Sub Exchange(Index() As Long, ByVal i As Long, ByVal j As Long)
   Dim Temp As Long: Temp = Index(i)
   Index(i) = Index(j)
   Index(j) = Temp
   End Sub

Answer 1

根据 Domenic 的评论，他没有回答。

"If you use a Dictionary object instead of a Collection and you can sort by value as shown here. – Domenic Aug 30 at 22:29 "

现在可以了。

VBA 按值对集合进行排序

VBA sorting a collection by value

collections

vba

bubble-sort

heapsort