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[Bug libstdc++/11364] half of permutations missing


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11364



------- Additional Comments From craie at acm dot org  2003-06-29 16:19 -------
Subject: Re:  half of permutations missing

Falk et. al.,

On Sun, Jun 29, 2003 at 11:57:49AM -0000, falk at debian dot org wrote:
> 
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11364
> 
> falk at debian dot org changed:
> 
>            What    |Removed                     |Added
> ----------------------------------------------------------------------------
>              Status|UNCONFIRMED                 |WAITING
> 
> 
> ------- Additional Comments From falk at debian dot org  2003-06-29 11:57 -------
> I still can't see the bug. I get:
> 
> 1 gives 1 permutations.
> 2 gives 2 permutations.
> 3 gives 6 permutations.
> 4 gives 24 permutations.
>
These are fine...

> 5 gives 60 permutations.
> 6 gives 360 permutations.
> 7 gives 2520 permutations.
> 8 gives 20160 permutations.
> 9 gives 181440 permutations.
> 10 gives 1814400 permutations.
> 
All these are half what they should be!  The duplicate value is
causing problems with the permutation algorithm.

I'm trying to test all arrangements of data in a list and am
only able to move through half of them due to this 'glitch'.

Later,                                                  Jason
--
(designed for a fixed-width font!!!)
/**************************************************************************
 * Jason James            CompSci Teacher -+                              *
 *                        RPG Gamer        |- but maybe not in that order *
 * Email:  craie@acm.org  Husband         -+                              *
 **************************************************************************/


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