clear all,clc
M = 100;
N = 100;
 
ii = randi(9,1,M);
jj = randi(9,1,M);
 
%// Warm up tic/toc.
for k = 1:50000
    tic(); elapsed = toc();
end
 
 
disp('-------------------- With FOR-LOOP')
tic
N1 = numel(ii);
N2 = numel(jj);
out = zeros(N1*N2,1);
idx = 1;
for k1 = 1:N1
    for k2 = 1:N2
        out(idx) = ii(k1) + jj(k2);
        idx = idx + 1;
    end
end
toc
clear N1 N2 out idx k1 k2
 
disp('-------------------- With BROADCASTING')
tic
out = reshape(ii(:).' + jj(:),[],1);
toc# your code goes here

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