求助，如何批量处理？

reason04

各位专家：
      小虫在网上找到一段可以计算两个单元格文字间Levenshtein edit distance距离的vba代码，但是该代码只能一次处理两个单元格，我如果想批量处理两列文本的相似度，不知道该如何修改该代码？
      谢谢！

Public result As Double

Public Function Levenshtein_Distance(ByVal str1 As String, ByVal str2 As String) As Double
    Dim d As Long
    If Len(str1) > Len(str2) Then
        d = Len(str1)
    Else
        d = Len(str2)
    End If
    result = 1 - (LD(str1, str2) / d)
End Function

Private Function Minimum(ByVal a As Integer, ByVal b As Integer, ByVal c As Integer) As Integer
    Dim min As Integer
    min = a
    If b < min Then
        min = b
    End If
    If c < min Then
        min = c
    End If
    Minimum = min
End Function

Public Function LD(ByVal s As String, ByVal t As String) As Integer
    Dim dis() As Integer
    Dim m As Integer
    Dim n As Integer
    Dim i As Integer
    Dim j As Integer
    Dim s_i As String
    Dim t_j As String
    Dim cost As Integer
    n = Len(s)
    m = Len(t)
    If n = 0 Then
        LD = m
        Exit Function
    End If
    If m = 0 Then
        LD = n
        Exit Function
    End If
    ReDim dis(0 To n, 0 To m)
    For i = 0 To n
        dis(i, 0) = i
    Next i
    For j = 0 To m
        dis(0, j) = j
    Next j
    For i = 1 To n
        s_i = Mid$(s, i, 1)
        For j = 1 To m
            t_j = Mid$(t, j, 1)
            If s_i = t_j Then
                cost = 0
            Else
                cost = 1
            End If
            dis(i, j) = Minimum(dis(i - 1, j) + 1, dis(i, j - 1) + 1, dis(i - 1, j - 1) + cost)
        Next j
    Next i
    LD = dis(n, m)
    Erase dis
End Function

Sub cc()
    str1 = Sheets("sheet1").Range("A1").Value
    str2 = Sheets("sheet1").Range("B1").Value
    Levenshtein_Distance str1, str2
    MsgBox result
    [C1] = result
End Sub