Vlastimil, Thank you so much, but... All that is Chinese for me. Can you show a 'normal' Python code for me?
Yehuda On Sat, Jan 2, 2016 at 2:44 PM, Vlastimil Brom <vlastimil.b...@gmail.com> wrote: > 2016-01-02 12:49 GMT+01:00 <katye2...@gmail.com>: > > Hi, newbie here! > > I'm trying to write a python program to find how many trailing zeros are > in 100! (factorial of 100). > > I used factorial from the math module, but my efforts to continue > failed. Please help. > > > > Thank you, > > Yehuda > > -- > > https://mail.python.org/mailman/listinfo/python-list > > Hi, > rather an illustration of the available tools in python, than a > (submittable) solution: > > >>> import re, math > >>> len(re.search(r"0*$", str(math.factorial(100))).group()) > 24 > [or the same code on more lines with some indentation - if it is > preserved via e-mail] > >>> len( > ... re.search( > ... r"0*$", > ... str( > ... math.factorial(100) > ... ) > ... ).group() > ... ) > 24 > >>> > > I.e. You need the length of the string resulting as the match of the > regular expression search for a pattern representing zero or more "0" > at the end of the input text, which is the string version of 100! > > Of course, there are other ways to get this result :-) > > regards, > vbr > -- https://mail.python.org/mailman/listinfo/python-list
