Tách số từ chuỗi

[levanduyet]

Chào các bạn,
Đôi khi các bạn muốn tách số ra khỏi một chuổi trong Excel. Bạn có thể dùng hàm ExtractNumber sau của OzGrid Business Applications:

Function ExtractNumber(rCell As Range, _
    Optional Take_decimal As Boolean, Optional Take_negative As Boolean) As Double
    
    Dim iCount As Integer, i As Integer, iLoop As Integer
    Dim sText As String, strNeg As String, strDec As String
    Dim lNum As String
    Dim vVal, vVal2
     
     ''''''''''''''''''''''''''''''''''''''''''
     'Written by OzGrid Business Applications
     'www.ozgrid.com
     
     'Extracts a number from a cell containing text and numbers.
     ''''''''''''''''''''''''''''''''''''''''''
    sText = rCell
    If Take_decimal = True And Take_negative = True Then
        strNeg = "-" 'Negative Sign MUST be before 1st number.
        strDec = "."
    ElseIf Take_decimal = True And Take_negative = False Then
        strNeg = vbNullString
        strDec = "."
    ElseIf Take_decimal = False And Take_negative = True Then
        strNeg = "-"
        strDec = vbNullString
    End If
    iLoop = Len(sText)
        
            For iCount = iLoop To 1 Step -1
            vVal = Mid(sText, iCount, 1)
            
    
                If IsNumeric(vVal) Or vVal = strNeg Or vVal = strDec Then
                    i = i + 1
                    lNum = Mid(sText, iCount, 1) & lNum
                        If IsNumeric(lNum) Then
                            If CDbl(lNum) < 0 Then Exit For
                        Else
                          lNum = Replace(lNum, Left(lNum, 1), "", , 1)
                        End If
                End If
                 
                If i = 1 And lNum <> vbNullString Then lNum = CDbl(Mid(lNum, 1, 1))
            Next iCount
        
     
    ExtractNumber = CDbl(lNum)
     
End Function

Chuổi text Công thức Kết quả
a-bg-12909- =ExtractNumber(A1,,TRUE) -12909
a-bg-12909- =ExtractNumber(A2) 12909
a.a1.2... =ExtractNumber(A3,TRUE) 1.2
a.a1.2... =ExtractNumber(A4) 12
a.a-1.2.... =ExtractNumber(A5,TRUE,TRUE) -1.2
abg1290.11 =ExtractNumber(A6,TRUE) 1290.11
abg129013Agt =ExtractNumber(A7) 129013
abg129012 =ExtractNumber(A8) 129013

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