Re: converting letters to numbers

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Subject	Re: converting letters to numbers
Date	Tue, 08 Oct 2013 11:36:51 -0400
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On Tue, Oct 8, 2013, at 10:28, kjakupak@gmail.com wrote:
> I have to define a function add(c1, c2), where c1 and c2 are capital
> letters; the return value should be the sum (obtained by converting the
> letters to numbers, adding mod 26, then converting back to a capital
> letter). 
> 
> All I have so far is:
> 
> def add(c1, c2):
>     ord(c1) - ord('a') + 1
>     ord(c2) - ord('a') + 1
> 
> I know I need to use ord and chr, just not sure how.

Your description says capital letters, but 'a' is a lowercase letter.

Does "mod 26" means A is 1, or is it 0? i.e., is A+A = B or is it A?

What should your function do if the letter isn't a capital letter from
the basic set of 26 English letters?

Thread

converting letters to numbers kjakupak@gmail.com - 2013-10-08 07:28 -0700
  Re: converting letters to numbers Robert Day <robertkday@gmail.com> - 2013-10-08 15:47 +0100
    Re: converting letters to numbers kjakupak@gmail.com - 2013-10-08 07:51 -0700
      Re: converting letters to numbers Joel Goldstick <joel.goldstick@gmail.com> - 2013-10-08 11:01 -0400
  Re: converting letters to numbers random832@fastmail.us - 2013-10-08 11:36 -0400
    Re: converting letters to numbers kjakupak@gmail.com - 2013-10-08 08:44 -0700
      Re: converting letters to numbers random832@fastmail.us - 2013-10-08 11:58 -0400
      Re: converting letters to numbers Tim Roberts <timr@probo.com> - 2013-10-13 20:13 -0700
        Re: converting letters to numbers Steven D'Aprano <steve@pearwood.info> - 2013-10-14 05:02 +0000
          Re: converting letters to numbers Charles Hixson <charleshixsn@earthlink.net> - 2013-10-16 12:18 -0700
            Re: converting letters to numbers Piet van Oostrum <piet@vanoostrum.org> - 2013-10-16 16:25 -0400
          Re: converting letters to numbers Rotwang <sg552@hotmail.co.uk> - 2013-10-16 23:39 +0100
            Re: converting letters to numbers MRAB <python@mrabarnett.plus.com> - 2013-10-16 23:53 +0100
            Re: converting letters to numbers Oscar Benjamin <oscar.j.benjamin@gmail.com> - 2013-10-17 01:21 +0100
          Re: converting letters to numbers Tim Roberts <timr@probo.com> - 2013-10-19 16:31 -0700
          Re: converting letters to numbers rusi <rustompmody@gmail.com> - 2013-10-20 01:33 -0700
  Re: converting letters to numbers Mark Lawrence <breamoreboy@yahoo.co.uk> - 2013-10-08 17:05 +0100
  Re: converting letters to numbers Dave Angel <davea@davea.name> - 2013-10-08 21:24 +0000

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