MATLAB: Vectorization request with loop

vectorization

I would like to vectorize the following code with loop
n = 5;
y = (11:20);
   for j = 1 : n + 1
      for i = 1 : n + 1
          if j>= i
              func(i,j) = y(i) ./ sum(y(1:j));
          end
      end
  end
Trial>> 
Trial>> func
func =
    1.0000    0.4783    0.3056    0.2200    0.1692    0.1358
         0    0.5217    0.3333    0.2400    0.1846    0.1481
         0         0    0.3611    0.2600    0.2000    0.1605
         0         0         0    0.2800    0.2154    0.1728
         0         0         0         0    0.2308    0.1852
         0         0         0         0         0    0.1975
could someone help me out?

Best Answer

n = 5;
y = (11:20)';
y_p = cumsum(y)';
result = triu(bsxfun(@rdivide,y(1:n+1),y_p(1:n+1)))
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