excel 求两个字符串的相同部分

Atl+F11——菜单栏——插入——模块，粘贴以下代码：

Function J(a As String, b As String) As String

Dim i As Integer, t, d As Object

Set d = CreateObject("Scripting.Dictionary")

For i = 1 To Len(b)

t = Mid(b, i, 1)

If InStr(a, t) Then d(t) = d(t)

Next

t = d.keys

J = Join(t, "")

Set d = Nothing

End Function

关闭VBA窗口。

在C1输入

=J(A1,B1)

回车并向下填充。