MATLAB: Matrix Indices Problem

arrayfindindexingMATLABmatrix

Given a matrix e.g. A = [0 1 2 0 0; 0 3 4 5 0; 6 7 8 9 10; 0 0 0 11 0]

what MATLAB code will generate a vector of the column numbers of the first non-zero element in each row?

For this example the vector returned should be: [2;2;1;4]

[junk, idx] = max(logical(A),[],2)

idx will be you index vector.

[junk, idx] = sort({files.name});
sortedfiles = files(idx);

[~,idx] = sort(M(:), 'descend');
idx(M(:)==0) = [];
[row, col] = ind2sub(size(M), idx);
indexes = [row col];

Result: