J did that....  I did this.    en=: 13 :'%:+/"1 *:y'

Linda

-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Linda Alvord
Sent: Monday, December 16, 2013 1:53 AM
To: [email protected]
Subject: Re: [Jprogramming] Length of a vector

en=: [: %: [: +/"1 *:

Linda

-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Ganesh Rapolu
Sent: Sunday, December 15, 2013 10:54 PM
To: [email protected]
Subject: Re: [Jprogramming] Length of a vector

en =. +/"1&.:*:


On Sun, Dec 15, 2013 at 5:38 PM, km <[email protected]> wrote:

> This is an easy one, but let's see what you come up with.
>
> The Euclidian norm or length of a vector is the square root of the sum 
> of the squares of its components.  Write verb  en  below.  It should 
> be able to find the length of a vector of any number of components.
>
>    ]yy =: 2 2 2 $ 3 4 5 12 8 15 7 24
> 3  4
> 5 12
>
> 8 15
> 7 24
>    en yy  NB. lengths of 3 4 and 5 12 and 8 15 and 7 24
>  5 13
> 17 25
>
> -- Kip Murray
>
> Sent from my iPad
> ----------------------------------------------------------------------
> For information about J forums see http://www.jsoftware.com/forums.htm
>
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