Write a method called product which takes as its input an array of integers and returns their product. For example product([1,2,3]) # returns 6 product([0,-1,-10]) # returns 0 product([1,-1,-10]) # returns -11 If you need to iterate over the array, please use Array#each. Don't use, e.g., inject.

Write a method called product

def product(x)
  p = nil
  x.each do |y|
    if p.nil?
      p = y
    else
      p = p * y
    end
  end
  
  p
end

def product(x)
  p = 1
  x.each do |y|
    p = p * y
  end
  
  p
end

def product(x)
  x.reduce {|p,y| p * y }
end