Hadoop-Based Medical Image Storage and Access Method for Examination Series

Algorithm 1

	Input: data to be written X
(1)	begin
(2)	if A0 is not full
(3)	Insert data X at the top of |A0 in|
(4)	else if |A0 in| is full
(5)	Take out the bottom data Y of |A0 in|, and insert Y to the top of |A1 out|
(6)	if |A1 out| is full
(7)	Eliminate the data at the bottom of |A1 out|
(8)	endif
(9)	Insert X at the top of |A1 out|
(10)	endif
(11)	end