MATLAB: Find the repetition of matrix rows

MATLABmatrices

I want to find out if the row i of mxn matrix is repeated ,the code should give logic 1.Otherwise zero"there are many ways but Im searching for the best one" Thanks

Best Answer

Using the algorithm that Jan Simon posted in this Answer.
% Example of data
X = [6 5 4;
     1 2 3;
     1 2 3; 
     1 2 4;
     1 2 3];
[~,~,A] = unique(X,'rows','stable');
[n, bin] = histc(A, unique(A));
multiple = find(n > 1);
indexToDuplicate = ismember(bin, multiple);
Related Question