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# File 'lib/romanumerator.rb', line 21
def convert(input)
adder = Adder.new
numerals = input.upcase.scan /I|V|U|X|L|C|D|M/
running_total = 0
index = 0
while index < numerals.length do
s1 = adder.count(numerals[index])
if (index + 1) < numerals.length then
s2 = adder.count(numerals[index + 1])
if s1 >= s2 then
running_total += s1
index += 1
else
running_total += s2 - s1
index += 2
end
else
running_total += s1
index += 1
end
end
running_total
end
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