gistfile1.rb

a = [1,2,3,5,6,7,10,11,12,14,15]

def split_gaps(a)

  gaps = []
  buffer = a.inject([]) { |buffer, item|
    prev = buffer[buffer.size - 1]
    if prev && item - prev > 1
      gaps << buffer
      []
    else
      buffer << item
      buffer
    end
  }
  gaps << buffer

end

puts split_gaps(a).inspect