how to delete repated rows with out re order them

Hi all,

I have this cells arrays:

levelx=
      'GO:0016787'    'GO:0006412'    'GO:0030533'
      'GO:0008150'    'GO:0006412'    'GO:0030533'
      'GO:0006810'    'GO:0006412'    'GO:0030533'
      'GO:0016787'    'GO:0006412'    'GO:0030533'
      'GO:0008150'    'GO:0006412'    'GO:0030533'
      'GO:0006810'    'GO:0006412'    'GO:0030533'
      'GO:0016787'    'GO:0006412'    'GO:0030533'
      'GO:0008150'    'GO:0006412'    'GO:0030533'
      'GO:0006810'    'GO:0006412'    'GO:0030533'
      'GO:0016787'    'GO:0006412'    'GO:0030533'

I need to delete the repeated rows but without changing the order of the whole rows... note that I used a code that find te unique rows but it change the order of the rows:

[~,idx]=unique(cell2mat(levelx),'rows');
unique_levelx =  levelx(idx,:);

Answer 1

[José-Luis]

 [~,idx]=unique(cell2mat(levelx),'rows','first');
 unique_levelx =  levelx(sort(idx),:);

Answer 2

[Andrei Bobrov]

out = unique(levelx,'rows','stable');

[Jan]

Assuming that a very modern Matlab version is used.

[Andrei Bobrov]

Hi Jan!

Yes, R2012a and later.