Calculate the number of disk tracks traversed using the FCFS, SSTF, SCAN, and LOOK algorithms for the series of disk track service request given below. At the time the first request arrives in the disk request queue, the read/write head is at track 50, moving toward the outer (lower-numbered) tracks and the total number of track is 100 (numbered as 0 to 99).
54, 36, 21, 74, 46, 36, 26, 67
Note that each track over which the disk arm passes counts in the total, whether or not the track is read.