ルビーレンジ部品

Question

私は問題、Rubyのコードがあります。

def give_me_all_periods(period, paid_periods) 
    # Can you help me? 
end 

period = [1..10] 
paid_periods = [1..2, 5..8] 
give_me_all_periods(period, paid_periods).should == [1...2, 2...5, 5...8, 8...10] 

Answer 1

def give_me_all_periods(period, paid_periods) 
     p = period | paid_periods 
     union = p.inject([]){|u,x| u = u|range_to_arr(x)}.sort 
     ranges =[] 
     union.each_cons(2){|a| ranges << Range.new(a[0],a[1]) } 
     ranges 

end 

def range_to_arr(r) 
     [r.first,r.last] 
end