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MathGroup Archive 2006

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Re: how to sum lists of unequal length?

  • To: mathgroup at smc.vnet.net
  • Subject: [mg70387] Re: [mg70352] how to sum lists of unequal length?
  • From: "Chris Chiasson" <chris at chiasson.name>
  • Date: Sun, 15 Oct 2006 00:18:54 -0400 (EDT)
  • References: <200610140706.DAA07887@smc.vnet.net>

write some code to find the length of the longest list and pad them
all to that length

there is probably a shorter solution, but I don't know it off hand

On 10/14/06, Arkadiusz.Majka at gmail.com <Arkadiusz.Majka at gmail.com> wrote:
> Hi all,
>
> I have lists of unknown and unequal lengths. I want to sum them, e.g
>
> {a1,a2,a3}+{b1,b2,b3,b4,b5} and obtain result
> {a1+b1,a2+b2,a3+b3,b4,b5}. Simply filling by zeros of the shorter list
> is impossible because I have no idea how many zeros I have to pad.
>
> Please, help
>
> Arek
>
>


-- 
http://chris.chiasson.name/


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