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Function Reference: combnk

statistics: c = combnk (data, k)

Return all combinations of k elements in data.

k must be a non-negative integer. combnk (data, 0) returns a 1-by-0 array of the class of data, the one empty combination.

Source Code: combnk 

 c = combnk (1:5, 2);
 disp ('All pairs of integers between 1 and 5:');
All pairs of integers between 1 and 5:
 disp (c);
   1   2
   1   3
   1   4
   1   5
   2   3
   2   4
   2   5
   3   4
   3   5
   4   5