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January 4, 2016 02:29
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| let romanmap = [(1000,"M");(900,"CM");(500,"D");(400,"CD");(100,"C");(90,"XC");(50,"L");(40,"XL");(10,"X");(9,"IX");(5,"V");(4,"IV");(1,"I")] | |
| let rec roman romanmap n = | |
| match romanmap with | |
| | [] -> "" | |
| | x::xs -> if fst x <= n then snd x ^ roman romanmap (n - fst x) else roman xs n |
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