A Scala version (basically similar in form to the Perl/Python versions): 
val rtoa = Map('M' -> 1000, 'D' -> 500, 'C' -> 100, 'L' -> 50, 'X' -> 
+10, 'V' -> 5, 'I' -> 1)

def romanToDec(roman: String) : Int =
  roman.map((c) => rtoa(c.toUpperCase)).reduceLeft((x, y) => x + y - x
+ % y * 2)

val testData = List("XLII", "LXIX", "mi")
for(r <- testData)
  println(r + ": " + romanToDec(r))

[download]

In reply to Re: Rosetta PGA-TRAM by Arunbear
in thread Rosetta PGA-TRAM by eyepopslikeamosquito

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