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  1. d = [3, 0, 0, 1, 1, 0, 5, 3];
  2.  
  3. unique(d(sum(triu(bsxfun(@eq,d,d')))>1))
Success #stdin #stdout 0.17s 65056KB
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Standard input is empty
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ans =

   0   1   3
https://ideone.com/w5OldL
language:
Octave (octave 4.4.1)
created:
8 years ago
visibility:
public

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