Description of the problem

This assignment is to implement an interactive version of the Student Registration index system (described in The Student Registration Problem handout) in the object-oriented paradigm. You will be provided with a partial Java implementation of the system and asked to identify and make the necessary modifications.

The provided system allows browsing lists of courses required for the current student's major and allows registrations for courses, provided those courses are not full. When the registration process is complete, a window is displayed showing the registration results. (If running this program using file input, the results are sent to System.out; use command-line redirection to create result output files.)

A sample session of the current system is:

     >java objectoriented.Session con: >sessionresults.txt
     R 11 S 3201 S 9038 S 9173
     R 11 S 3201
     R 12 S 118 S 13373 S 2991 S 5448
     ^Z

     >type sessionresults.txt
     Registration results for Student Antoniono, Kimberly Pehnec [11]:
        Registration for section 3201 was successful.
        Registration for section 9038 was successful.
        Registration for section 9173 was successful.

     Registration results for Student Antoniono, Kimberly Pehnec [11]:
        Section 3201 was already registered for.

     Registration results for Student Kirkpatrick, Dwiriatom Bruce [12]:
        Section 118 is full.
        Registration for section 13373 was successful.
        Section 2991 is full.
        Registration for section 5448 was successful.

     >

Your assignment is to modify the existing code to support the following changes:

• If multiple requests conflict, discard all of the conflicting requests. Two sections are considered to conflict if their meeting times overlap. (Hint: Use the provided Section.Conflict() method.)

• Allow students to request courses in addition to sections; have the system automatically select sections so that the student is registered for the highest number of highest-rated sections possible. (If taking the highest-rated sections leads to conflicts, lower-rated sections should be chosen.)

• Modify the listing of required courses to list available sections of required courses that the Student has not yet taken.

• Add preferences capability; allow students to enter preferred classmates and use these when scheduling. Optimize the preference ratings for the courses selected; when lower-preference sections allow more of the requested courses to be taken, select the lower-preference sections.

Here is a sample session of the new system:

     >java objectoriented.Session con:
     R 11 C 33201 S 9038

     Registration results for Student Antoniono, Kimberly Pehnec [11]:
     Registration for section 11 was successful.
     Registration for section 14670 Course 33201 was successful.
     Section 9038 is full.

     R 12 C 33201

     Registration results for Student Kirkpatrick, Dwiriatom Bruce [12]:
     Section 14670 (Course 33201) is full.

     ^Z