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MathGroup Archive 2004

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Re: Pad a sign - and + to a list of lists

  • To: mathgroup at smc.vnet.net
  • Subject: [mg49750] Re: [mg49728] Pad a sign - and + to a list of lists
  • From: Selwyn Hollis <sh2.7183 at misspelled.erthlink.net>
  • Date: Fri, 30 Jul 2004 06:02:03 -0400 (EDT)
  • References: <200407291145.HAA10322@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

On Jul 29, 2004, at 7:45 AM, sean kim wrote:

> consider a list of lists
>
> {
> {{1, 1}}, {{1, 2}}, {{1, 3}},
> {{2, 1}}, {{2, 2}}, {{2, 3}},
> {{3, 1}}, {{3, 2}}, {{3, 3}}
> }
>
> Now pad a string or letter to the end of the each list within the list
> so u get...
>
> {{1, 1},string}, {{1, 2}, string}, {{1, 3}, string}
>
>  or sign
>
> {{1, 1},-}, {{1, 2},-}, {{1, 3},-}
>
> thanks in advance
>
> sean
>
>
Hi Sean,

You can use a rule like this:

yourarray /. {{x_, y_}} -> {{x, y}, "+"}


-----
Selwyn Hollis
http://www.appliedsymbols.com
(edit reply-to to reply)


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