diff toolboxes/FullBNT-1.0.7/KPMtools/myintersect.m @ 0:e9a9cd732c1e tip

first hg version after svn
author wolffd
date Tue, 10 Feb 2015 15:05:51 +0000
parents
children
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/toolboxes/FullBNT-1.0.7/KPMtools/myintersect.m	Tue Feb 10 15:05:51 2015 +0000
@@ -0,0 +1,28 @@
+function C = myintersect(A,B)
+% MYINTERSECT Intersection of two sets of positive integers (much faster than built-in intersect)
+% C = myintersect(A,B)
+
+A = A(:)'; B = B(:)';
+
+if isempty(A)
+  ma = 0;
+else
+  ma = max(A);
+end
+
+if isempty(B)
+  mb = 0;
+else
+  mb = max(B);
+end
+
+if ma==0 | mb==0
+  C = [];
+else
+  %bits = sparse(1, max(ma,mb));
+  bits = zeros(1, max(ma,mb));
+  bits(A) = 1;
+  C = B(logical(bits(B)));  
+end
+
+%sum( bitget( bitand( cliquesb(i), cliquesb(j) ), 1:52 ) );