Question

Hey I got an array “a” which looks like this:

[[5], [7], [8]] # result of "puts a.to_s"

How can I calculate the average of the array.
I already have a method that works for normal arrays with one dimension:

def average
 return self.reduce(:+)/self.length.to_f
end

How can I convert the array from above in a normal array or how to use that method for the more dimensional array?

Answer 1

Using Array#flatten you can use your predefined average method.