The LCFS and Johnson's priority rules are basically the same except LCFS uses due dates as a major determiner of job sequence.

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LCFS (Last Come, First Served) prioritizes jobs based on their arrival times, serving the most recently arrived job first, without considering due dates. Johnson's priority rules are used for minimizing the total time needed to complete a set of jobs on two machines, focusing on the order of jobs to optimize processing time, not on arrival times or due dates directly.

The LCFS and Johnson's Priority Rules Are Basically the Same