bird_count.rb

# Problem: https://exercism.org/tracks/ruby/exercises/bird-count.rb

# Solution
class BirdCount
  def self.last_week
    [0, 2, 5, 3, 7, 8, 4]
  end
  def initialize(birds_per_day)
    @birds_per_day = birds_per_day
  end
  def yesterday
     @birds_per_day[-2]
  end
  def total
    @birds_per_day.sum
  end
  def busy_days
    @birds_per_day.select {|birds| birds>=5}.size
  end
  def day_without_birds?
   @birds_per_day.any? {|birds| birds==0}
  end
end