Mercurial > octave-nkf
annotate scripts/set/complement.m @ 8286:6f2d95255911
fix @seealso references to point to existing anchors
| author | Thorsten Meyer <thorsten.meyier@gmx.de> |
|---|---|
| date | Wed, 29 Oct 2008 17:52:54 -0400 |
| parents | 83a8781b529d |
| children | 6e4a811e58f8 |
| rev | line source |
|---|---|
| 7017 | 1 ## Copyright (C) 1994, 1996, 1997, 1999, 2000, 2004, 2005, 2006, 2007 |
| 2 ## John W. Eaton | |
| 2313 | 3 ## |
| 4 ## This file is part of Octave. | |
| 5 ## | |
| 6 ## Octave is free software; you can redistribute it and/or modify it | |
| 7 ## under the terms of the GNU General Public License as published by | |
| 7016 | 8 ## the Free Software Foundation; either version 3 of the License, or (at |
| 9 ## your option) any later version. | |
| 2313 | 10 ## |
| 11 ## Octave is distributed in the hope that it will be useful, but | |
| 12 ## WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 14 ## General Public License for more details. | |
| 15 ## | |
| 16 ## You should have received a copy of the GNU General Public License | |
| 7016 | 17 ## along with Octave; see the file COPYING. If not, see |
| 18 ## <http://www.gnu.org/licenses/>. | |
| 2303 | 19 |
| 3368 | 20 ## -*- texinfo -*- |
| 21 ## @deftypefn {Function File} {} complement (@var{x}, @var{y}) | |
| 22 ## Return the elements of set @var{y} that are not in set @var{x}. For | |
| 23 ## example, | |
| 3426 | 24 ## |
| 3368 | 25 ## @example |
| 26 ## @group | |
| 27 ## complement ([ 1, 2, 3 ], [ 2, 3, 5 ]) | |
| 28 ## @result{} 5 | |
| 29 ## @end group | |
| 30 ## @end example | |
|
8286
6f2d95255911
fix @seealso references to point to existing anchors
Thorsten Meyer <thorsten.meyier@gmx.de>
parents:
7411
diff
changeset
|
31 ## @seealso{create_set, union, intersect} |
| 3408 | 32 ## @end deftypefn |
| 3368 | 33 |
| 2314 | 34 ## Author: jwe |
| 35 | |
| 2311 | 36 function y = complement (a, b) |
| 559 | 37 |
| 904 | 38 if (nargin != 2) |
| 6046 | 39 print_usage (); |
| 559 | 40 endif |
| 41 | |
| 904 | 42 if (isempty (a)) |
| 559 | 43 y = create_set(b); |
| 904 | 44 elseif (isempty (b)) |
| 559 | 45 y = []; |
| 46 else | |
| 904 | 47 a = create_set (a); |
| 48 b = create_set (b); | |
| 559 | 49 yindex = 1; |
| 904 | 50 y = zeros (1, length (b)); |
| 51 for index = 1:length (b) | |
| 52 if (all (a != b (index))) | |
| 559 | 53 y(yindex++) = b(index); |
| 54 endif | |
| 55 endfor | |
| 56 y = y(1:(yindex-1)); | |
| 57 endif | |
| 58 | |
| 59 endfunction | |
| 7411 | 60 |
| 61 %!assert(all (all (complement ([1, 2, 3], [3; 4; 5; 6]) == [4, 5, 6]))); | |
| 62 | |
| 63 %!assert(all (all (complement ([1, 2, 3], [3, 4, 5, 6]) == [4, 5, 6]))); | |
| 64 | |
| 65 %!assert(isempty (complement ([1, 2, 3], [3, 2, 1]))); | |
| 66 | |
| 67 %!error complement (1); | |
| 68 | |
| 69 %!error complement (1, 2, 3); | |
| 70 |