Interval merger

interval_merger.rb

class IntervalMerger
	def initialize(*intervals)
		@intervals = intervals
	end

	def merge
		# TODO: return the reduced set of intervals
	end
end

IntervalMerger.new([0, 2], [1, 4]).merge         # => [[0, 4]]
IntervalMerger.new([0, 1], [3, 4]).merge         # => [[0, 1], [3, 4]]
IntervalMerger.new([4, 5], [5, 6], [6, 7]).merge # => [[4, 7]]
IntervalMerger.new([4, 5], [2, 6]).merge         # => [[2, 6]]