Could anyone tell me how to different combinations with respect to 6 users on the same coding.

Question

Prabha Kumaresan 2018-3-23

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https://ww2.mathworks.cn/matlabcentral/answers/390121-could-anyone-tell-me-how-to-different-combinations-with-respect-to-6-users-on-the-same-coding

评论： Prabha Kumaresan 2018-3-23

采纳的回答： Image Analyst

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If there are 4 users I want to combine users into groups under the conditions:

condition 1->users present in one group should not be present in other group.
condition 2->users need to form different combinations of groups, since there are 4 users. Say for example, (12,34) can be one combination. The next one can be (13,24), and other one can be (14,23).

code

unused_rows=1:4
while ~isempty(unused_rows)  
N_UE_rows=2;   
rows=unused_rows(randsample(length(unused_rows),N_UE_rows))
[~,idx]=find(ismember(unused_rows,rows))
unused_rows(idx)=[]
end

The above code works, but I can get only one combination of results. Can anyone help me to get the output of all three combinations.

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Answer 1

Image Analyst 2018-3-23

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If you have the Statistics and Machine Learning Toolbox, try this:

>> c = combnk(1:6, 4)
c =
   4     5     6
   4     5     6
   3     5     6
   3     4     6
   3     4     5
   4     5     6
   3     5     6
   3     4     6
   3     4     5
   2     5     6
   2     4     6
   2     4     5
   2     3     6
   2     3     5
   2     3     4

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Prabha Kumaresan 2018-3-23

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thanks.for the code

c = combnk(1:4,2)
c =
       3     4
       2     4
       2     3
       1     4
       1     3
       1     2
could you tell me how to group the combinations such that number present in one combination should not be present in other combination.