How to recursively add odd index elements in a vector

I have an assignment to write a recursive function to add the odd elements within a vector. For example i have a vector

v = 2 4 7 8 10 34 1

I would like to add 2 + 7 + 10 + 1 = 20 using a recursive method. Any help is greatly appreciated!

Answer 1

[Star Strider]

You have been asked to add the elements with odd indices. This is different (and easier) than odd elements.

Since this is a homework assignment, I will refer you to the documentation for the colon operator. (No worries — it has absolutely nothing to do the the gastrointestinal tract!)