Please complete all of this

Problem 5 - Disk Scheduling (12 points) a) Disk requests are received by a disk drive for cylinders 5,25,18,3,39, 8, and 35 in that order. How many head movements (in \# of cylinders) are needed to serve these requests if serviced with the indicated algorithms? Assume a total of 40 cylinders (i.e., 0 to 39), that the arm is currently at cylinder 20 , and that it is currently moving towards cylinder 39. - Shortest Seek Time First (SSTF) (4 points) O Order: (20), Head movements: - C-LOOK (4 points) O Order: (20), - Head movements: - SCAN (elevator algorithm) (4 points) (Grading Note: full points if you have also added the 0 after the last request at 356 before changing direction. If you missed including the 0 , then 1pt penalty.) Order: (20) Head movements