Build array from for loop

I have a for loop that generates an array (newdd) that changes in length in each iteration.

How do create a new variable (array) that combines each array (newdd) generated from the loop so that the output is one long array of all newdd combined?

Answer 1

[Jan]

n = 100;
c = cell(1, n);
for k = 1:n
   c{k} = rand(1, randi(10));
end
result = cat(2, c{:});

This avoids an iteratively growing output vector, because this would need a lot of ressources.