19 lines
491 B
Julia
19 lines
491 B
Julia
function parseroman(rnum::AbstractString)
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romandigits = Dict('I' => 1, 'V' => 5, 'X' => 10, 'L' => 50,
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'C' => 100, 'D' => 500, 'M' => 1000)
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mval = accm = 0
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for d in reverse(uppercase(rnum))
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val = try
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romandigits[d]
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catch
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throw(DomainError())
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end
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if val > mval maxval = val end
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if val < mval
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accm -= val
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else
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accm += val
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end
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end
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return accm
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end
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