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Design program to simulate a first-come first-serve FCFS, shortest seek time first SSTF, SCAN and SCAN algorithms work cycle process. Suppose there are n number of tracks consisting of tracks access sequence for a given number m, and began to track the direction of head movement (forward or reverse), respectively, using a different track sequence to access the disk scheduling algorithm, given the head of each visit distance, calculate the average seek length for each algorithm.