How to write cumulative product function

Hi

I am trying to implement cumproduct without using built-in function. Below is my test code . I need help to implement "My Test code " like built-in cumprod([1 1 2 : 5]).

Thank you!!

% Built-in 
A = cumprod([1 1 2 : 5])
%      A 
%------+
%      1
%      1
%      2
%      6
%     24
%    120
% My Test code , 
A1 = 1;
for i = 1 :5
        A1 = A1 * i;
        fprintf('%10d|%10d|\n',i,A1);
end

    A1
-----+    
    1|
    2|
    6|
   24|
  120|

[Life is Wonderful]

Thank you!!

[Voss]

You're welcome!

Answer 1

[Torsten]

m = 10;
v = [1 1 2:m];
pcum = cumproduct(v)

function pcum = cumproduct(v)
  n = numel(v);
  pcum = zeros(n,1);
  pcum(1) = v(1);
  for i = 2:n
    pcum(i) = pcum(i-1)*v(i);
  end
end

[Life is Wonderful]

Thank you, works as expected!!

Any suggestion without loop or make it faster here ? !!

[Torsten]

Recursive call ?

[Life is Wonderful]

Yes, would nice if you can share snippet !!

Thank you