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- ## Copyright (C) 1998 John W. Eaton
- ##
- ## This file is part of Octave.
- ##
- ## Octave is free software; you can redistribute it and/or modify it
- ## under the terms of the GNU General Public License as published by
- ## the Free Software Foundation; either version 2, or (at your option)
- ## any later version.
- ##
- ## Octave is distributed in the hope that it will be useful, but
- ## WITHOUT ANY WARRANTY; without even the implied warranty of
- ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- ## General Public License for more details.
- ##
- ## You should have received a copy of the GNU General Public License
- ## along with Octave; see the file COPYING. If not, write to the Free
- ## Software Foundation, 59 Temple Place - Suite 330, Boston, MA
- ## 02111-1307, USA.
-
- ## usage: randperm (N)
- ##
- ## Return a row vector containing a random permutation of the
- ## integers from 1 to N.
-
- ## Author: "James R. Van Zandt" <jrv@vanzandt.mv.com>
- ## Adapted-By: jwe
-
- function retval = randperm (n)
-
- if (nargin == 1 && is_scalar (n) && floor (n) == n)
- if (n > 0)
- [junk, retval] = sort (rand (1, n));
- else
- error ("randperm: argument must be positive");
- endif
- else
- usage ("randperm (n)");
- endif
-
- endfunction
-