Find the the inices of columns of nonzero entries from rows of a matrix

Hello! Every one

I have a matrix k= [0 0 1 1 0 0 0 0 0 0 0 0 0;...

0 0 0 1 0 0 0 0 0 0 0 0 0;...

0 0 0 0 0 0 0 0 0 0 0 0 0;...

0 0 0 0 0 0 0 0 0 0 0 0 0;...

0 0 0 0 0 01 0 0 0 0 0 0]

I want to get the indices of nonzero columns in each row

Output be like O1 = [3 4]

O2 = [4]

O3 = []

o4 = [7]

Answer 1

[madhan ravi]

O=arrayfun(@(x)find(k(x,:)),1:size(k,1),'un',0);
celldisp(O)

[Mazhar Ali]

Thanks

[Guillaume]

Another option:

cellfun(@nonzeros, num2cell(k, 2), 'UniformOutput', false);  %you case use @find instead of @nonzeros if you want

[madhan ravi]

Thank you Guillaume!