help me complete a sequence in matlab

main.m
% Define the sequence
seq = [1, 3, NaN, NaN, 9, 11, 13, NaN, NaN];

% Find the indices of missing elements
missing_indices = find(isnan(seq));

% Fill in the missing elements with an algorithm (e.g., linear interpolation)
for i = 1:length(missing_indices)
    start_val = seq(missing_indices(i) - 1);
    end_val = seq(find(~isnan(seq), 1, 'last'));
    step = (end_val - start_val) / (length(seq) - find(~isnan(seq), 1, 'last') - 1);
    seq(missing_indices(i)) = start_val + (i - 1) * step;
end

disp(seq);
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