72 lines
2.2 KiB
Python
72 lines
2.2 KiB
Python
|
def single_digit_integer_to_spoken_language(n):
|
||
|
|
if n == 0:
|
||
|
|
return ""
|
||
|
|
assert(n > 0 and n < 10)
|
||
|
|
return {1: 'one', 2: 'two', 3: 'three', 4: 'four', 5: 'five',
|
||
|
|
6: 'six', 7: 'seven', 8: 'eight', 9: 'nine'}[n]
|
||
|
|
|
||
|
|
|
||
|
|
def double_digit_integer_to_spoken_language(n):
|
||
|
|
assert(n > 9 and n < 100)
|
||
|
|
try:
|
||
|
|
return {
|
||
|
|
10: 'ten', 11: 'eleven', 12: 'twelve', 13: 'thirteen',
|
||
|
|
14: 'fourteen', 15: 'fifteen', 16: 'sixteen',
|
||
|
|
17: 'seventeen', 18: 'eighteen', 19: 'nineteen'}[n]
|
||
|
|
except KeyError:
|
||
|
|
pass
|
||
|
|
a, b = str(n)
|
||
|
|
a = {2: 'twenty', 3: 'thirty', 4: 'forty', 5: 'fifty',
|
||
|
|
6: 'sixty', 7: 'seventy', 8: 'eighty', 9: 'ninety'}[int(a)]
|
||
|
|
b = integer_to_spoken_language(int(b))
|
||
|
|
return a + '-' + b
|
||
|
|
|
||
|
|
|
||
|
|
def triple_digit_integer_to_spoken_language(n):
|
||
|
|
a, b = str(n)[0], str(n)[1:]
|
||
|
|
a = single_digit_integer_to_spoken_language(int(a))
|
||
|
|
b = integer_to_spoken_language(int(b))
|
||
|
|
if not b:
|
||
|
|
return a + " hundred"
|
||
|
|
return a + " hundred and " + b
|
||
|
|
|
||
|
|
|
||
|
|
def four_digit_integer_to_spoken_language(n):
|
||
|
|
a, b = str(n)[0], str(n)[1:]
|
||
|
|
a = single_digit_integer_to_spoken_language(int(a))
|
||
|
|
b = integer_to_spoken_language(int(b))
|
||
|
|
return a + " thousand " + b
|
||
|
|
|
||
|
|
|
||
|
|
def integer_to_spoken_language(n):
|
||
|
|
length = len(str(n))
|
||
|
|
if length == 1:
|
||
|
|
return single_digit_integer_to_spoken_language(n)
|
||
|
|
elif length == 2:
|
||
|
|
return double_digit_integer_to_spoken_language(n)
|
||
|
|
elif length == 3:
|
||
|
|
return triple_digit_integer_to_spoken_language(n)
|
||
|
|
elif length == 4:
|
||
|
|
return four_digit_integer_to_spoken_language(n)
|
||
|
|
else:
|
||
|
|
raise Exception("Length not supported.")
|
||
|
|
|
||
|
|
|
||
|
|
assert(integer_to_spoken_language(5) == 'five')
|
||
|
|
assert(integer_to_spoken_language(19) == 'nineteen')
|
||
|
|
assert(integer_to_spoken_language(21) == 'twenty-one')
|
||
|
|
assert(integer_to_spoken_language(210) == 'two hundred and ten')
|
||
|
|
assert(integer_to_spoken_language(3000) == 'three thousand ')
|
||
|
|
assert(integer_to_spoken_language(8333) ==
|
||
|
|
'eight thousand three hundred and thirty-three')
|
||
|
|
|
||
|
|
|
||
|
|
def euler_017():
|
||
|
|
s = "".join([integer_to_spoken_language(i) for i in range(1, 1001)])
|
||
|
|
s = s.replace(" ", "").replace("-", "")
|
||
|
|
return len(s)
|
||
|
|
|
||
|
|
|
||
|
|
assert(euler_017() == 21124)
|
||
|
|
print("e017.py: {}".format(euler_017()))
|