用excel时，发现如下这个宏，不知道是不是病毒，请解答，谢谢
Sub RemoveSame()
Dim col1, col2 As String
col1 = "A"
col2 = "B"
Dim row1, row2, i, j As Integer
Dim finded As Boolean
row1 = ActiveSheet.Range(col1 & "65536").End(xlUp).row
row2 = ActiveSheet.Range(col2 & "65536").End(xlUp).row
For i = 1 To row1
    finded = False
    If (Range(col1 & i) <> "") Then
    For j = 1 To row2
        If (Range(col1 & i) = Range(col2 & j)) Then
            Range(col2 & j) = ""
            finded = True
        End If
        If (finded) Then
        Range(col1 & i) = ""
        End If
    Next
    End If
Next
End Sub


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将excel文件压缩跟帖上传。