codewars tower builder ruby

TowerBuilder.rb

def towerBuilder(n_floors)
  tower = []
  total_cells_taken = 2 * n_floors - 1
  n_floors.times do |floor| 
    floor_cells_taken = floor * 2  +1
    spaces_from_each_side = (total_cells_taken - floor_cells_taken) / 2
    spaces = ' ' * spaces_from_each_side
    tower << "#{spaces}#{'*'*floor_cells_taken}#{spaces}"
  end
  return tower
end

@yaroslavrick thank you! :)