MATLAB: How to use unique function in 2D matrices

MATLAB

hello
I would like to know how I can use the unique function in matlab in such a way that i take off similar elements out of the 2D matrix, provided that the unique function does NOT SORT out he matrix and does NOT CHANGE ITS SHAPE
for example, consider x = [1 1 2 2 3 3 4 4; 5 5 6 6 7 7 8 8 ; 9 9 10 10 11 11 12 12]
output x = [1 2 3 4; 5 6 7 8; 9 10 11 12]
when I used unique, I did not find a way that did not play around with the shape of the 2D matrix

Best Answer

   x = [1 1 2 2 3 3 4 4;  5 5 6 6 7 7 8 8;  9 9 10 10 11 11 12 12]
   nRow = size(x, 1);
   c = cell(1, nRow);
   for iRow = 1:nRow
     c{iRow} = unique(x(iRow, :), 'stable');
   end
   result = cat(1, c{:});  % Fails if number of unique elements differ
Related Question