关于后端:Computer-Lab

Computer Lab

You run four computer labs. Each lab contains computer stations that are numbered as shown in the table below:-
Lab Number Computer Station Numbers
1 1-5
2 1-6
3 1-4
4 1-3
Each user has a unique five-digit ID Number. Whenever a user logs on, the user’s ID, Lab Number, and the computer station are transmitted to your station. For example, if user 49193 logs onto station 2 in Lab 3, your system receives (49193, 2, 3) as input data. Similarly, when a user logs off a station, your system receives the Lab Number and computer station number.
Write a computer program that could be used to track, by lab, which user is logged onto which computer. For example, if user 49193 is logged into station 2 in lab 3 and user 99577 is logged into station 1 of lab 4, then your system might display the following:-
Lab Number        Computer Stations
1                          1: empty  2: empty  3: empty  4: empty  5: empty
2                          1: empty  2: empty  3: empty  4: empty  5: empty  6: empty
3                          1: empty  2: 49193  3: empty  4: empty  
4                          1: 99577  2: empty  3: empty
Task:-

1. Create a menu that allows the administrator to simulate the transmission of information by manually typing in the login or logoff data. Whenever someone logs in or out, the display table should be updated. 
2. Write a search option so the administrator can type in a user Id and the system will output what Lab Number and station number the user is logged into, or “None” if the user Id is not logged into any computer station.
   You should use a fixed array of length 4 for the labs. Each array entry points to a dynamic array that stores the user login information for each respective computer station.
   Sample Output:- (User input is in bold and Italics)
   LAB STATUS
   Lab # Computer Stations
3. 1: empty 2: empty 3: empty 4: empty 5: empty
4. 1: empty 2: empty 3: empty 4: empty 5: empty 6: empty
5. 1: empty 2: empty 3: empty 4: empty
6. 1: empty 2: empty 3: empty
   MAIN MENU
   0) Quit
   1) Simulate login
   2) Simulate logoff
   3) Search
   1
   Enter the 5 digit ID number of the user logging in:
   12345
   Enter the lab number the user is logging in from (1-4):
   2
   Enter computer station number the user is logging in to (1-6):
   3
   LAB STATUS
   Lab # Computer Stations
7. 1: empty 2: empty 3: empty 4: empty 5: empty
8. 1: empty 2: empty 3: 12345 4: empty 5: empty 6: empty
9. 1: empty 2: empty 3: empty 4: empty
10. 1: empty 2: empty 3: empty
    MAIN MENU
    0) Quit
    1) Simulate login
    2) Simulate logoff
    3) Search
    2
    Enter the 5 digit ID number of the user to find:
    12345
    User 12345 is logged off.
    LAB STATUS
    Lab # Computer Stations
11. 1: empty 2: empty 3: empty 4: empty 5: empty
12. 1: empty 2: empty 3: empty 4: empty 5: empty 6: empty
13. 1: empty 2: empty 3: empty 4: empty
14. 1: empty 2: empty 3: empty
    MAIN MENU
    0) Quit
    1) Simulate login
    2) Simulate logoff
    3) Search
    3
    “None”

Enter the 5 digit ID number of the user to find:
12345

Please submit only source.java. You two projects for this project.