Privacy-Preserving Sorting Algorithms Based on Logistic Map for Clouds

Algorithm 2

PQS-LM(, start, end).

Begin

(1) IF  start < end  THEN

(2) = start, = end +1;

(3)WHILE TRUE DO

(4)WHILE    DO

(5)++;

(6)END WHILE

(7)WHILE    DO

(8)--;

(9)END WHILE

(10)IF    THEN

(11);

(12)ELSE

(13)Finish the current loop and start the next loop;

(14)END IF

(15)END WHILE

(16);

(17)PQS-LM(, start, j-1);

(18)PQS-LM(, , end);

(19) END IF

END