Matlab code for it would be something like... :
listofnumbers = [1 4 7 9];
weight = [1 2 3 4]; % weights, not frequencies... - 9 should appear 4x more than 1, 7 should be 3x, 4 should be 2x...
cw = cumsum(weight);
cw = cw./cw(end);
for i = 1:10
random = rand(1,1);
selected = listofnumbers(min(1:numel(listofnumbers) .* random < cw))
end
