Construct code for storing a college database using an appropriate class hierarchy. The people associated with the college are generally classified as students or employees, and employees are further subdivided into faculty and staff. All people will have names and email addresses in the database. Write an appropriate abstract class Person that is a superclass of Student. Students have year (freshman, sophomore, junior, or senior), major (Computer Science, Mathematics or English), and grade point average (0.0 to 4.0). Write appropriate accessor and mutator methods for displaying and modifying the data in both classes.

When making changes to optimize part of a processor, it is often the case that speeding up one type of instruction comes at the cost of slowing down something else. for example, if we put in a complicated fast floating-point unit, that takes space, and something might have to be moved farther away from the middle to accommodate it, adding an extra cycle in delay to reach that unit. the basic amdahl's law equation does not take into account this trade-off. a. if the new fast floating-point unit speeds up floating-point operations by, on average, 2ă—, and floating-point operations take 20% of the original program's execution time, what is the overall speedup (ignoring the penalty to any other instructions)? b. now assume that speeding up the floating-point unit slowed down data cache accesses, resulting in a 1.5ă— slowdown (or 2/3 speedup). data cache accesses consume 10% of the execution time. what is the overall speedup now? c. after implementing the new floating-point operations, what percentage of execution time is spent on floating-point operations? what percentage is spent on data cache accesses?