MATLAB: Summation of array elements

Question

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:]

Answer 1

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