MATLAB: How can i find an eleiment which comes only one in a matrix ????

Question

Example

A=[1 2;1 3;1 4;1 5;2 4]

Ans should be [3 5]

Answer 1

A=[1 2;1 3;1 4;1 5;2 4]
[ii,jj,kk]=unique(A)
b=accumarray(kk,(1:numel(kk))',[],@numel)
out=ii(b==1)