<p>我最初是使用列表和python2为projecteuler编写的。很可能有bug我没有测试太多,但希望它能帮助你</p>
<pre><code>nums = ["", "one", "two", "three", "four", "five",
"six", "seven", "eight", "nine "]
teens = ["", "eleven", "twelve", "thirteen", "fourteen",
"fifteen", "sixteen", "seventeen", "eighteen", "nineteen"]
tens = ["", "ten", "twenty", "thirty", "forty",
"fifty", "sixty", "seventy", "eighty", "ninety"]
thousands = ["","thousand", "million", "billion", "trillion"]
def num_to_words():
n= int(input("Enter number to convert: "))
words = ""
if n == 0:
words += "zero"
else:
numStr = "%d" % n
groups = (len(numStr) + 2) // 3
numStr = numStr.zfill(groups * 3)
for i in range(0, groups*3, 3):
h = int(numStr[i])
t = int(numStr[i+1])
u = int(numStr[i+2])
g = groups - (i // 3 + 1)
if h >= 1:
words += nums[h]
words += " hundred "
words+=" "
if int(numStr) % 100: # if number modulo 100 has remainder add "and" i.e one hundred and ten
words+=" and "
if t > 1:
words+= tens[t]
if u >= 1:
words+= nums[u]
words+=" "
elif t == 1:
if u >= 1:
words+= teens[(u)]
else:
words+= tens[t]
words+=" "
else:
if u >= 1:
words+= nums[u]
words+=" "
if g >= 1 and (h + t + u) > 0:
words+= thousands[g]
words+=" "
return words
In [7]: num_to_words()
Enter number to convert: 12399990
Out[7]: 'twelvemillion three hundred and ninetynine thousand nine hundred and ninety'
</code></pre>