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r = ["I", "V", "X", "L", "C", "D", "M"]
v = [1, 5, 10, 50, 100, 500, 1000]
def roman(c):
for i in range(len(r)):
if r[i] == c:
return v[i]
basic = [ "IIII", "VIIII", "XXXX", "LXXXX", "CCCC", "DCCCC" ]
modern = [ "IV", "IX", "XL", "XC", "CD", "CM" ]
def convert_from_roman(s):
print("Input:",s)
for i in range(len(basic)):
key = modern[i]
val = basic[i]
s = s.replace(key, val)
sum = 0
for c in list(s):
sum += roman(c)
print("Output:", sum)
def convert_to_roman(num):
print("Input:", num)
ans = ""
stack = []
for i in range(len(r)):
if num >= v[i]:
stack.append(v[i])
i = len(stack) - 1
while i >= 0:
x = stack.pop()
d = int(num/x)
for j in range(d):
ans += r[i]
num -= d*x
i -= 1
for i in range(len(basic)):
key = basic[len(basic) - 1 - i]
val = modern[len(basic) - 1 - i]
ans = ans.replace(key, val)
print("Output:", ans)
convert_from_roman("CCXLVI")
convert_to_roman(39);
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