summation of array elements

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Terry McGinnis 2015-6-22

编辑： Azzi Abdelmalek 2015-6-22

I have an array of say 5 elements and I want to run a loop and find the cumulative sum till the ith iteration eg.

array if f=[1 2 3 4 5]

so in the first iteration sum should be 1,in the 2nd it should be 3,in the third it should be 6 and so on...

what is the most efficient way to do this?

thanks in advance:]

Azzi Abdelmalek 2015-6-22

编辑：Azzi Abdelmalek 2015-6-22

f=[1 2 3 4 5];
out=cumsum(f)

Guillaume 2015-6-22

or just iterate over the cumsum

f = [1 2 3 4 5]
for s = cumsum(f)
  %do something with s
end

Terry McGinnis 2015-6-22

this is what i needed.thanks

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