sashaafm

def gfe(head], _, []), do: {head, []}
def gfe([], {:empty, :empty}, new_queue), do: {nil, new_queue}
def gfe([], front, new_queue), do: {front, new_queue}
def gfe([{head_item, head_prio} = head | []], front, new_queue) do 
	{front_item, front_prio}         = front
  if head_prio > front_prio do
  	{head, new_queue ++ [front]}
  else
    {front, new_queue ++ [head]}
 	end