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problem_17.py
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"""
problem 17:
If the numbers 1 to 5 are written out in words:
one, two, three, four, five, then there are 3 + 3 + 5 + 4 + 4 = 19 letters
used in total.
If all the numbers from 1 to 1000 (one thousand) inclusive were written out
in words, how many letters would be used?
NOTE: Do not count spaces or hyphens. For example,
342 (three hundred and forty-two) contains 23 letters and
115 (one hundred and fifteen) contains 20 letters.
The use of "and" when writing out numbers is in compliance with British usage.
"""
def once(num):
word = ''
if num == '1':
word = "One"
if num == '2':
word = "Two"
if num == '3':
word = "Three"
if num == '4':
word = "Four"
if num == '5':
word = "Five"
if num == '6':
word = "Six"
if num == '7':
word = "Seven"
if num == '8':
word = "Eight"
if num == '9':
word = "Nine"
word = word.strip()
return word
def ten(num):
word = ''
if num[0] == '1':
if num[1] == '0':
word = "Ten"
if num[1] == '1':
word = "Eleven"
if num[1] == '2':
word = "Twelve"
if num[1] == '3':
word = "Thirteen"
if num[1] == '4':
word = "Fourteen"
if num[1] == '5':
word = "Fifteen"
if num[1] == '6':
word = "Sixteen"
if num[1] == '7':
word = "Seventeen"
if num[1] == '8':
word = "Eighteen"
if num[1] == '9':
word = "Nineteen"
else:
text = once(num[1])
if num[0] == '2':
word = "Twenty"
if num[0] == '3':
word = "Thirty"
if num[0] == '4':
word = "Forty"
if num[0] == '5':
word = "Fifty"
if num[0] == '6':
word = "Sixty"
if num[0] == '7':
word = "Seventy"
if num[0] == '8':
word = "Eighty"
if num[0] == '9':
word = "Ninety"
word = word + "" + text
word = word.strip()
return word
def hundred(num):
word = ''
text = ten(num[1:])
if num[0] == '1':
word = "One"
if num[0] == '2':
word = "Two"
if num[0] == '3':
word = "Three"
if num[0] == '4':
word = "Four"
if num[0] == '5':
word = "Five"
if num[0] == '6':
word = "Six"
if num[0] == '7':
word = "Seven"
if num[0] == '8':
word = "Eight"
if num[0] == '9':
word = "Nine"
if num[0] != '0':
word = word + "Hundredand"
word = word + text
word = word.strip()
return word
def thousand(num):
word = ''
pref = ''
text = ''
length = len(num)
if length == 6:
text = hundred(num[3:])
pref = hundred(num[:3])
if length == 5:
text = hundred(num[2:])
pref = ten(num[:2])
if length == 4:
text = hundred(num[1:])
if num[0] == '1':
word = "One"
if num[0] == '2':
word = "Two"
if num[0] == '3':
word = "Three"
if num[0] == '4':
word = "Four"
if num[0] == '5':
word = "Five"
if num[0] == '6':
word = "Six"
if num[0] == '7':
word = "Seven"
if num[0] == '8':
word = "Eight"
if num[0] == '9':
word = "Nine"
word = word + "Thousand"
word = word + text
if length == 6 or length == 5:
word = pref + "Thousand" + word
word = word.strip()
return word
def million(num):
word = ''
pref = ''
text = ''
length = len(num)
if length == 9:
text = thousand(num[3:])
pref = hundred(num[:3])
if length == 8:
text = thousand(num[2:])
pref = ten(num[:2])
if length == 7:
text = thousand(num[1:])
if num[0] == '1':
word = "One"
if num[0] == '2':
word = "Two"
if num[0] == '3':
word = "Three"
if num[0] == '4':
word = "Four"
if num[0] == '5':
word = "Five"
if num[0] == '6':
word = "Six"
if num[0] == '7':
word = "Seven"
if num[0] == '8':
word = "Eight"
if num[0] == '9':
word = "Nine"
word = word + "Million"
word = word + text
if length == 9 or length == 8:
word = pref + "Million" + word
word = word.strip()
return word
def billion(num):
word = ''
pref = ''
text = ''
length = len(num)
if length == 12:
text = million(num[3:])
pref = hundred(num[:3])
if length == 11:
text = million(num[2:])
pref = ten(num[:2])
if length == 10:
text = million(num[1:])
if num[0] == '1':
word = "One"
if num[0] == '2':
word = "Two"
if num[0] == '3':
word = "Three"
if num[0] == '4':
word = "Four"
if num[0] == '5':
word = "Five"
if num[0] == '6':
word = "Six"
if num[0] == '7':
word = "Seven"
if num[0] == '8':
word = "Eight"
if num[0] == '9':
word = "Nine"
word = word + "Billion"
word = word + text
if length == 12 or length == 11:
word = pref + "Billion" + word
word = word.strip()
return word
#104382426112 One Hundred Four Billion Three Hundred Eighty Two Million Four Hundred Twenty Six Thousand One HUndred Twelve
def to_letter(test):
a = str(test)
leng = len(a)
if leng == 1:
num = once(a)
if leng == 2:
num = ten(a)
if leng == 3:
num = hundred(a)
if leng > 3 and leng < 7:
num = thousand(a)
if leng > 6 and leng < 10:
num = million(a)
if leng > 9 and leng < 13:
num = billion(a)
return num
def to_convert(initial, final):
s = 0
for k in range(initial, final+1):
print(to_letter(k), len(to_letter(k)))
s += len(to_letter(k))
return s
# RUN
# problem 17
print(to_convert(1, 1000))