how to make a vector z that consists of odd-indexed entries of y (y=[100:1])?
3 views (last 30 days)
John D'Errico on 20 Jan 2022
Edited: John D'Errico on 20 Jan 2022
A very confusing question. I'll take a wild guess. If this does not answer your question, then you need to be FAR more lear.
y = primes(20)
Now take the elements of y with odd indexes. That is, start at index 1, then 3, then 5, then 7, etc.
z = y(1:2:end)
But maybe you want to know the indexes of the elements in the arry that are odd numbers. How can I possibly know from your question?
u = find(mod(y,2) == 1)
As you can see, all primes in that list except for the first are odd numbers.