Mercurial > hg > camir-aes2014
comparison toolboxes/FullBNT-1.0.7/KPMtools/mysetdiff.m @ 0:e9a9cd732c1e tip
first hg version after svn
author | wolffd |
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date | Tue, 10 Feb 2015 15:05:51 +0000 |
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-1:000000000000 | 0:e9a9cd732c1e |
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1 function C = mysetdiff(A,B) | |
2 % MYSETDIFF Set difference of two sets of positive integers (much faster than built-in setdiff) | |
3 % C = mysetdiff(A,B) | |
4 % C = A \ B = { things in A that are not in B } | |
5 % | |
6 % Original by Kevin Murphy, modified by Leon Peshkin | |
7 | |
8 if isempty(A) | |
9 C = []; | |
10 return; | |
11 elseif isempty(B) | |
12 C = A; | |
13 return; | |
14 else % both non-empty | |
15 bits = zeros(1, max(max(A), max(B))); | |
16 bits(A) = 1; | |
17 bits(B) = 0; | |
18 C = A(logical(bits(A))); | |
19 end |