如何计算单元格中字符串的出现数？

Question

我试图计算从第2行开始的AJ列中的每一行中"SMM:“这个短语的出现次数，然后将每一行的赋值分配给从第2行开始的BL列。

Sub calculateamlp()


Dim charactercount As Integer
Dim rangeAG As Range
Dim cellCheck As Range
Dim f As Integer
f = 2
 Worksheets("pptsr").Activate

Set rangeAG2 = Range("BL2", Range("BL2").End(xlDown))
Set rangeAG = Range("Aj2", Range("Aj2").End(xlDown))
For Each cellCheck In rangeAG

        charactercount = Len(cellCheck) - Len(WorksheetFunction.Substitute(cellCheck, ":", ""))


        Worksheets("pptsr").Range("BL2" & f).Value = charactercount

   f = f + 1
Next cellCheck

End Sub

Answer 1

为了精确匹配，您应该使用"vbBinaryCompare“。如果要将"smm:“与"SMM:”匹配，则应该使用"vbTextCompare“。试试这个：

Sub calculateamlp()
Dim count As Long, i As Long, j As Long, rw As Long
Dim ws As Worksheet
Set ws = Worksheets("pptsr")
With ws
    rw = .Range("AJ" & .Rows.count).End(xlUp).Row
    For i = 2 To rw
        For j = 1 To Len(.Cells(i, "AJ"))
            If InStr(j, .Cells(i, "AJ"), "SMM:", vbTextCompare) Then
                count = count + 1
                j = InStr(j, .Cells(i, "AJ"), "SMM:", vbTextCompare)
            End If
        Next j
        .Cells(i, "BL") = count
        count = 0
    Next
End With
End Sub

Answer 2

此函数通过计算使用with子字符串拆分字符串中的元素数来获得计数。

Function getStrOccurenceCount(Text As String, SubString As String)
    getStrOccurenceCount = UBound(Split(Text, SubString))
End Function

您可以这样修改代码

工作表(“pptsr”).Range(“BL2”& f).Value = getStrOccurenceCount(cellCheck.Text，"SMM:")

下面是如何使用带有数组的getStrOccurenceCount来提高效率。

Sub calculateamlp2()
    Const SUBSTRING As String = "SMM:"
    Dim rangeAG As Range
    Dim data As Variant
    Dim x As Long

    Set rangeAG = Range("AJ2", Range("AJ2").End(xlDown))

    data = rangeAG.Value

    For x = 1 To UBound(data)
        data(x, 1) = getStrOccurenceCount(CStr(data(x, 1)), SUBSTRING)
    Next

    rangeAG.EntireRow.Columns("BL").Value = data
End Sub

演示:示例数据999,999行，执行时间0.9375秒：

​

​