How to extract the sign of an integer in Ruby?

Question

I need a function which returns/prints the sign on an integer. So far I came up with this:

def extract_sign(integer)
  integer >= 0 ? \'+\' : \'-\'
end
         


        

Answer 1

I use n == 0 ? 1 : n.abs / n, e.g.:

def sign(n)
  n == 0 ? 1 : n.abs / n
end

sign(10) # 1
sign(0) # 1
sign(-5) # -1