Excel 如何随机选择多个单元格并在消息框中显示内容?
我在A1-A37单元有一个身份证号码1101-1137的列表。我想点击一个按钮,随机选择其中20个,没有重复,并显示在一个消息框中 我现在所拥有的似乎是从数字1-37中随机选择的,而不是单元格的实际内容,我不知道如何修复它。例如,如果我从单元格A37中删除编号1137,则编号37仍然可以出现在消息框中;如果我用字母E替换单元格A5中的数字1105,E将不会显示在消息框中,但5可以 但是,如果我将“Const nItemsTotal As Long=37”更改为等于其他数字,比如31,它将只输出1-31之间的数字 这就是我所拥有的:Excel 如何随机选择多个单元格并在消息框中显示内容?,excel,vba,Excel,Vba,我在A1-A37单元有一个身份证号码1101-1137的列表。我想点击一个按钮,随机选择其中20个,没有重复,并显示在一个消息框中 我现在所拥有的似乎是从数字1-37中随机选择的,而不是单元格的实际内容,我不知道如何修复它。例如,如果我从单元格A37中删除编号1137,则编号37仍然可以出现在消息框中;如果我用字母E替换单元格A5中的数字1105,E将不会显示在消息框中,但5可以 但是,如果我将“Const nItemsTotal As Long=37”更改为等于其他数字,比如31,它将只输出1
Private Sub CommandButton1_Click()
Const nItemsToPick As Long = 20
Const nItemsTotal As Long = 37
Dim rngList As Range
Dim idx() As Long
Dim varRandomItems() As Variant
Dim i As Long
Dim j As Long
Dim booIndexIsUnique As Boolean
Set rngList = Range("A1").Resize(nItemsTotal, 1)
ReDim idx(1 To nItemsToPick)
ReDim varRandomItems(1 To nItemsToPick)
For i = 1 To nItemsToPick
Do
booIndexIsUnique = True ' Innocent until proven guilty
idx(i) = Int(nItemsTotal * Rnd + 1)
For j = 1 To i - 1
If idx(i) = idx(j) Then
' It's already there.
booIndexIsUnique = False
Exit For
End If
Next j
If booIndexIsUnique = True Then
strString = strString & vbCrLf & idx(i)
Exit Do
End If
Loop
varRandomItems(i) = rngList.Cells(idx(i), 1)
Next i
Msg = strString
MsgBox Msg
' varRandomItems now contains nItemsToPick unique random
' items from range rngList.
End Sub
我肯定这是个愚蠢的错误,但我迷路了。非常感谢您的帮助。我在您的代码中增加了一行。。。现在是:
strString = strString & vbCrLf & Cells(idx(i), 1).Value
完整代码为:
Private Sub CommandButton1_Click()
Const nItemsToPick As Long = 20
Const nItemsTotal As Long = 37
Dim rngList As Range
Dim idx() As Long
Dim varRandomItems() As Variant
Dim i As Long
Dim j As Long
Dim booIndexIsUnique As Boolean
Set rngList = Range("A1").Resize(nItemsTotal, 1)
ReDim idx(1 To nItemsToPick)
ReDim varRandomItems(1 To nItemsToPick)
For i = 1 To nItemsToPick
Do
booIndexIsUnique = True ' Innocent until proven guilty
idx(i) = Int(nItemsTotal * Rnd + 1)
For j = 1 To i - 1
If idx(i) = idx(j) Then
' It's already there.
booIndexIsUnique = False
Exit For
End If
Next j
If booIndexIsUnique = True Then
strString = strString & vbCrLf & Cells(idx(i), 1).Value
Exit Do
End If
Loop
varRandomItems(i) = rngList.Cells(idx(i), 1)
Next i
Msg = strString
MsgBox Msg
' varRandomItems now contains nItemsToPick unique random
' items from range rngList.
End Sub
因此,它不返回数字,而是使用返回的数字查看与其相关的行上的值。只需将索引洗牌即可:
Sub MAIN()
Dim ary(1 To 37) As Variant
Dim i As Long, j As Long
For i = 1 To 37
ary(i) = i
Next i
Call Shuffle(ary)
msg = ""
For i = 1 To 20
j = ary(i)
msg = msg & vbCrLf & Cells(j, 1).Value
Next i
MsgBox msg
End Sub
Public Sub Shuffle(InOut() As Variant)
Dim i As Long, j As Long
Dim tempF As Double, Temp As Variant
Hi = UBound(InOut)
Low = LBound(InOut)
ReDim Helper(Low To Hi) As Double
Randomize
For i = Low To Hi
Helper(i) = Rnd
Next i
j = (Hi - Low + 1) \ 2
Do While j > 0
For i = Low To Hi - j
If Helper(i) > Helper(i + j) Then
tempF = Helper(i)
Helper(i) = Helper(i + j)
Helper(i + j) = tempF
Temp = InOut(i)
InOut(i) = InOut(i + j)
InOut(i + j) = Temp
End If
Next i
For i = Hi - j To Low Step -1
If Helper(i) > Helper(i + j) Then
tempF = Helper(i)
Helper(i) = Helper(i + j)
Helper(i + j) = tempF
Temp = InOut(i)
InOut(i) = InOut(i + j)
InOut(i + j) = Temp
End If
Next i
j = j \ 2
Loop
End Sub
如果您构建了一个包含通过随机化找到的ID的字符串,您可以检查重复
Dim i As Long, msg As String, id As String
msg = Chr(9)
For i = 1 To 20
id = 1100 + Int((37 - 1 + 1) * Rnd + 1)
Do Until Not CBool(InStr(1, msg, Chr(9) & id & Chr(9)))
Debug.Print id & msg
id = 1100 + Int((37 - 1 + 1) * Rnd + 1)
Loop
msg = msg & id & Chr(9)
Next i
msg = Mid(Left(msg, Len(msg) - 1), 2)
MsgBox msg
另一种方法:
Sub test()
Dim Dic As Object, i%
Set Dic = CreateObject("Scripting.Dictionary")
Dic.comparemode = vbTextCompare
While Dic.Count <> 20
i = WorksheetFunction.RandBetween(1, 37)
If Not Dic.exists(i) Then Dic.Add i, Cells(i, "A")
Wend
MsgBox Join(Dic.Items, Chr(13))
End Sub
子测试()
作为对象的Dim Dic,i%
设置Dic=CreateObject(“Scripting.Dictionary”)
Dic.comparemode=vbTextCompare
数到20
i=工作表函数.randbween(1,37)
如果不存在Dic(i),则Dic添加i,单元格(i,“A”)
温德
MsgBox连接(Dic.Items,Chr(13))
端接头
测试:
你非常可爱,当然现在它工作得非常完美。非常感谢。