* 링크 못 찾음
Thus, I was thinking that there should be a fast way to calculate the first few numbers with System.Collections.ArrayList as far as I have written about a helper to sort arrays and range sorter. So, as far as it can be obviously solved with a N^2 complexity algorithm it is quite easy to be done:
Public Sub TaxiCabNumber() Dim a As Long Dim b As Long Dim lastNumber As Long Dim cnt As Long lastNumber = 200 Dim arrList As Object Set arrList = CreateObject("System.Collections.ArrayList") For a = 1 To lastNumber For b = a + 1 To lastNumber Dim current As String current = a ^ 3 + b ^ 3 'Debug.Assert (a <> 1 Or b <> 12) And (a <> 9 Or b <> 10) If arrList.contains(current) Then Debug.Print current Else arrList.Add (current) End If cnt = cnt + 1 Next b Next a End Sub
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