该函数遍历所有整数并只用五个整数值挑出二进制值并将它们写入电子表格。什么可能会减慢我的Excel VBA宏?
运行这个For x = 1 To 134217728
需要2.5天!帮帮我!
我怎么能加快速度?
Function D2B(ByVal n As Long) As String
n = Abs(n)
D2B = ""
Do While n > 0
If n = (n \ 2) * 2 Then
D2B = "0" & D2B
Else
D2B = "1" & D2B
n = n - 1
End If
n = n/2
Loop
End Function
Sub mixtures()
Dim x As Long
Dim y As Integer
Dim fill As String
Dim mask As String
Dim RowOffset As Integer
Dim t As Date
t = Now
fill = ""
For x = 1 To 134217728
mask = Right(fill & CStr(D2B(x)), Len(fill & CStr(D2B(x))))
Debug.Print mask
If x > 100000 Then Exit For
If Len(mask) - Len(WorksheetFunction.Substitute(mask, "1", "")) = 5 Then _
RowOffset = RowOffset + 1
For y = 1 To Len(mask)
If Len(mask) - Len(WorksheetFunction.Substitute(mask, "1", "")) = 5 Then _
Range("mix").Offset(RowOffset).Cells(y) = Mid(mask, y, 1)
Next
Next
Debug.Print DateDiff("s", Now, t)
End Sub
确实,单元访问太慢了 – 2011-03-29 08:03:27