RosettaCodeData/Task/Non-decimal-radices-Convert/PureBasic/non-decimal-radices-convert...

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Global alphanum$ = "0123456789abcdefghijklmnopqrstuvwxyz" ;36 digits
#maxIntegerBitSize = SizeOf(Integer) * 8
Procedure toDecimal(base, s.s)
Protected length, i, toDecimal
length = Len(s)
If length: toDecimal = FindString(alphanum$, Left(s, 1), 1) - 1: EndIf
For i = 2 To length
toDecimal * base + FindString(alphanum$, Mid(s, i, 1), 1) - 1
Next
ProcedureReturn toDecimal
EndProcedure
Procedure.s toBase(base, number)
Protected i, rem, toBase.s{#maxIntegerBitSize} = Space(#maxIntegerBitSize)
For i = #maxIntegerBitSize To 1 Step -1
rem = number % base
PokeC(@toBase + i - 1, PeekC(@alphanum$ + rem))
If number < base: Break: EndIf
number / base
Next
ProcedureReturn LTrim(toBase)
EndProcedure
If OpenConsole()
PrintN( Str(toDecimal(16, "1a")) )
PrintN( toBase(16, 26) )
Print(#CRLF$ + #CRLF$ + "Press ENTER to exit")
Input()
CloseConsole()
EndIf