matlab - how to generate possible distinct sets of pairs from a given set? -

-

in matlab how do this? have set of n elements

from set make new set of n/2 pairs such elements in different pairs distinct. how generate distinct sets of such n/2 pairs n elements in matlab?

e.g. input set - {1,2,3,4}

possible output sets -

{{1,2},{3,4}}

{{1,3},{2,4}}

{{1,4},{2,3}}

i not find clean solution "distinct elements each halved-vector" requirement. suggest check each result individually. expect there's better solution around: 1 job.

x = [1 2 3 3]; xsize = size(x,2);  p = perms(x); = unique(p,'rows');  result = [];  entry=up'   left = entry(1:xsize/2);   right = entry(xsize/2+1:xsize);   if numel(unique(left)) == xsize/2 && numel(unique(right)) == xsize/2     result = vertcat(result,entry')   end end

just completeness, result is:

1   3   2   3 1   3   3   2 2   3   1   3 2   3   3   1 3   1   2   3 3   1   3   2 3   2   1   3 3   2   3   1

i not sure if needed split halved vectors. in case, put left , right whatever prefer.


Comments

Post a Comment

Popular posts from this blog

django - How can I change user group without delete record -

-
on website user have 1 group. , user can change group. it's made user.groups.clear() and user.groups.add(new_group) but it's not efficient, because there 2 sql query: delete, insert. how can change group update query? user , group related each other using manytomanyfield . means intersection table exists relating both entities, , if don't specify model map (using through attribute) django creates 1 you. looking @ sources django.contrib.auth.models see that's case. fortunatly, can access intermediary model using through attribute of manager (in case, user.groups.through ). can use regular model. example: >>> alice = user.objects.create_user('alice', 'alice@example.com', 'alicepw') >>> employee = group.objects.create(name='employee') >>> manager = group.objects.create(name='manager') >>> alice.groups.add(employee) >>> alice.groups.all() [<group: employee...
Read more

java - Need to add SOAP security token -

-
i need set custom soap header attribute on jax-ws generated webservice client. case webservice calls must go through proxy server requiring specific token (recieved web request header) present in soap request header. e.g.: 1 carserviceservice service = null; 2 service = new carserviceservice(new url(url), new qname(qname); 3 carserviceendpoint port = service.getcarserviceport(); it seems in line 3 wsdl retrieved , call fails due missing security token. 1 point direction on how done? a detailed example has been mentioned here: creating , deploying jax-ws web service on tomcat 6 this article shows how create , use security token .
Read more

java - EclipseLink JPA Object is not a known entity type -

-
i have strange problem eclipselink , object want persist. have 1 object (keypointlistimpl) stores object keypointimpl in list. persisting keypointimpl objects works great if try persist keypointlistimpl object java.lang.illegalargumentexception says object keypointimpl isn't known entity type. here keypointimpl code: @entity @table(name="keypoints") public class keypointimpl implements keypoint { @id @generatedvalue(strategy = generationtype.identity) private int id; @enumerated(enumtype.string) private detectortype keypointtype; private float x; private float y; private float size; private float angle; private float response; private int octave; private int classid; ... } here keypointlistimpl code: @entity @table(name="keypointlists") public class keypointlistimpl implements keypointlist { @id @generatedvalue(strategy = generationtype.identity) private int id; @onetoone(cascade={ca...
Read more