Created
July 24, 2015 02:35
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# adapted from solution found at https://codequizzes.wordpress.com/2013/10/27/converting-an-integer-to-a-roman-numeral/ | |
class Integer | |
def to_roman | |
number = self | |
result = "" | |
roman_hash.keys.each do |divisor| | |
quotient, modulus = number.divmod(divisor) | |
result << roman_hash[divisor] * quotient | |
number = modulus | |
end | |
result | |
end | |
private | |
def roman_hash | |
{ | |
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" | |
} | |
end | |
end |
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