Jerry Hill wrote:
On Wed, May 19, 2010 at 3:58 PM, superpollo <ute...@esempio.net> wrote:
... how many positive integers less than n have digits that sum up to m:
...
any suggestion for pythonizin' it?
This is how I would do it:
def prttn(m, n):
"""How many positive integers less than n have digits that sum up to m"""
total = 0
for testval in range(n):
sumofdigits = sum(int(char) for char in str(testval))
if sumofdigits == m:
total += 1
return total
I added a docstring to the function, saying what it does, and what the
arguments are supposed to represent. I also moved the
convert-to-string-and-sum-the-digits logic into a single generator
expression that's passed to the builtin sum function. Oh, and I tried
to use slightly more expressive variable names.
my favorite solutio nso far.
@ OP
What means prttn ? is it any Dutch word :D ? m & n are also very poors
argument names.
I will be difficult to name properly the function, as it is doing
something ... I don't find the word, something like un-intuitive. Sounds
like homework.
def how_many_positive_integers_less_than_n_have_digits_that_sum_up_to_m(m, n)
:o)
JM
PS : read http://tottinge.blogsome.com/meaningfulnames/
<http://tottinge.blogsome.com/meaningfulnames/>
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