回答編集履歴
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コード追記
test
CHANGED
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@@ -24,7 +24,7 @@
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```vba
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-
Function Hikaku(a As String)
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Function Hikaku(a As String) As Long
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@@ -47,3 +47,35 @@
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=Hikaku(A1)
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```
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---
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やりたいことがよくわからないですが、
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文字列を先頭から比較していってどこまで一致しているのかその文字数を表示するというユーザー定義関数を提示しておきます。
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```vba
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Function Hikaku(a As String, b As String) As Long
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Dim i As Long, l As Long
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l = Len(a)
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If l > Len(b) Then l = Len(b)
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For i = 1 To l
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If Mid(a, i, 1) <> Mid(b, i, 1) Then Exit For
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Next
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Hikaku = i - 1
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End Function
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```
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