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Groups > comp.lang.python > #98913

Re: palindrome

From Peter Otten <__peter__@web.de>
Newsgroups comp.lang.python
Subject Re: palindrome
Date 2015-11-17 10:48 +0100
Organization None
Message-ID <mailman.380.1447753729.16136.python-list@python.org> (permalink)
References <s4bl4bd739gfq92c5hipb16grv8a5fh5pb@4ax.com> <mailman.376.1447735216.16136.python-list@python.org> <78cl4bljie79vqr80d1g084jm8ma3k0r9k@4ax.com> <CADgpKWbZ6kVWR3kxSuBrM+kys3+7FCS8N5W1rvqMbGY7H7KGvQ@mail.gmail.com>

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Abhiram R wrote:

> ​Haha. Nice. Although with your length of string and the range you're
> picking from,the chances of you getting a palindrome are (1/24!)  :D ​

Are you sure?

>>> candidates = list(itertools.product(string.ascii_lowercase, repeat=4))
>>> len(candidates)/len([c for c in candidates if c == c[::-1]])
676.0

That looks like one in 26**(length//2)

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Thread

palindrome Seymore4Head <Seymore4Head@Hotmail.invalid> - 2015-11-16 23:29 -0500
  Re: palindrome Abhiram R <abhi.darkness@gmail.com> - 2015-11-17 10:09 +0530
    Re: palindrome Seymore4Head <Seymore4Head@Hotmail.invalid> - 2015-11-16 23:48 -0500
      Re: palindrome Abhiram R <abhi.darkness@gmail.com> - 2015-11-17 10:25 +0530
      Re: palindrome Peter Otten <__peter__@web.de> - 2015-11-17 10:48 +0100
  Re: palindrome Peter Otten <__peter__@web.de> - 2015-11-17 10:31 +0100

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