回答編集履歴
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説明不足
answer
CHANGED
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@@ -1,3 +1,55 @@
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ヒントだけでも良いとの事なので置いておきます。
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なんとなく再帰処理っぽい気はするのですが……。
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-
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3
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+
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4
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【追記】
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5
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表は[4,0,1,5]とかを、4015(７進数)などに見立てて数を調べた結果です。
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6
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プログラムは以下。
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7
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```VBA
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8
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'注意：下手にketaとかsinsuに大きな数字(10以上とか)を入れると、あっという間に固まります。
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Sub Macro1()
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10
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Dim keta As Double
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Dim sinsu As Double
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Dim ans As Double
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Dim i As Double
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Dim mstr_i As String
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Dim tmpsinsu As Double
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keta = 3
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sinsu = 4
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ans = 0
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i = 0
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While i < sinsu ^ keta
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mstr_i = S10_2(i, sinsu)
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tmpsinsu = 0
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mstr_i = Replace(mstr_i, "0", "") '先に０を抜いとく
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While Len(mstr_i) Mod 2 = 0 And Len(mstr_i) <> 0
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mstr_i = Replace(mstr_i, CStr(tmpsinsu), "")
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tmpsinsu = tmpsinsu + 1
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Wend
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If Len(mstr_i) = 0 Then
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ans = ans + 1
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End If
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i = i + 1
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Wend
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MsgBox "sinsu=" & sinsu & " keta=" & keta & " ans=" & ans
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End Sub
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40
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'10進→2進
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Function S10_2(X As Double, sin As Double) As String
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Dim XX As Double
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Dim Y As String
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XX = X
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If (XX < 0) Then
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Y = "Error"
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Else
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Do
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Y = XX Mod sin & Y
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XX = XX \ sin
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Loop While (XX > 0)
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End If
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S10_2 = Y
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End Function
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55
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```
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