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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