[Jprogramming] Permutations

[Linda Alvord]

The only difference between the correct and the incorrect result is a space
before the second  :  .   Should a space make a difference ever? In the
correct result I can't understand what it is, what it does and why it does
it.

   /:~ :/:@": &.>a,b
------T-----┐
│01123│01123│
L-----+------


   /:~:([:/:": )&.>a,b
0 1

Since I set out originally to remove "atop", how can I do it?
   
  /:~ :([: /: ":)&.>a,b
------T-----┐
│10123│32110│
L-----+------

Hope you can help.  Thanks.  Linda

-----Original Message-----
From: programming-bounces at jsoftware.com
[mailto:programming-bounces at jsoftware.com] On Behalf Of Ian Clark
Sent: Thursday, September 22, 2011 9:13 PM
To: Programming forum
Subject: Re: [Jprogramming] Permutations

Off-the-cuff...

   a=: 10123
   b=: 32110
   c=: 32100
-:/ /:~ :/:@":&.>  a,b
1
-:/ /:~ :/:@":&.>  a,c
0


On Thu, Sep 22, 2011 at 10:41 PM, David Vaughan
<purpleblues13 at googlemail.com> wrote:
> Hi, what is the best (fastest) way to check whether a number is a
permutation of another number?
> I've tried listing all permutations of one number and checking whether the
other number is in the list of permutations. This seems pretty slow, so I
was hoping for a faster method.
>
> Thanks.
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