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SixthAssignment-CreatingLists.pdf

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06. Sixth Assignment – Creating Lists

Currently in our Facebook application, the first option in the driver program lists the

users in some arbitrary order. In this assignment you will split that into two options – one

to list users alphabetically by username and the other to list them based on the number

of friends they have (from most to least). When you list users alphabetically, list them

from smallest to largest and ignore capitalization. For example, Alice should come

before Bob who should come before Charlie. In addition, the Recommend friends

options currently lists the recommendations in an arbitrary order. Change this so that

the recommendations are listed according to the number of friends each person already

has, from most to least.

The menu displayed to the user will now look like the one below, and you will be

implementing options 1 and 2 and tweaking the implementation of option 9. (The code

for the rest of the options will stay the same as it was for previous assignments.)

1. List users alphabetically

2. List users by number of friends

3. Add a user

4. Delete a user

5. Get password hint

6. Add a friend

7. Remove a friend

8. List friends

9. Recommend friends

10. Quit

There are several ways to accomplish the assignment, and you are free to use

whichever approach you feel most comfortable with. If you’re at a loss for ideas,

consider that the Collections class has a sort method that will take any List and a

Comparator and sort the objects accordingly. This is described in chapter 22 of your

textbook. Comparators are also discussed in the video for this topic.

You will be graded according to the following rubric (each item is worth one point):

 The driver menu contains the two new options

 The program will list users based on their username

 The username listing is lexicographic order, from smallest to largest

 The username listing is case insensitive

 The program will list users based on the number of friends they have

 The listing based on number of friends is ordered from most to least

 Friend recommendations are listed in order of the number of friends each person

already has, from most to least

 The program compiles

 The program runs

 The program is clearly written and uses standard coding conventions

 Note: If your program does not compile, you will receive a score of 0 on the entire assignment

 Note: If you program compiles but does not run, you will receive a score of 0 on the entire assignment

 Note: If your Eclipse project is not exported and uploaded to the eLearn drop box correctly, you will receive a score of 0 on the entire assignment

 Note: If you do not submit code that solves the problem for this particular assignment, you will not receive any points for the program’s compiling, the program’s running, or following standard coding conventions.