[lab 8] test case 8_4

[ziyi105]

I am stuck at this test case for quite a while already Basically I stored human servers as well as self-checks counter in the same list in my shop class. The self-checks queue is also in my shop class.

[wjiayis]

Hi Ziyi, from the error output it seems that your "assignment to specific self-check counter" logic for self-checkout counters is as per intended. Customer 12 was served by self-check 2 although he's supposed to be served by self-check 3. Do you mind explaining your code logic for this part of the question? Perhaps it would reveal what needs to be fixed.

[OngMinXian]

If I am not wrong, your method of assigning a person to a self check out after waiting at the queue for self check out is not correct. If there are say >1 self check out counters, you should not assign a person entering the self check out queue the current best self check out counter (ie. the one that currently has the lowest free time) because maybe a person in the middle might take a really short serve time. In your test case, you can see that 12 was assigned to self check 2 prematurely even though it should be assigned to self check 3 when self check 3 becomes free since 12 is at the front of the queue.

What I did if im not wrong was to have a list of people at the self check out queue, and check that whenever we serve a customer from the self check out queue, it is the person at the very front of the queue.

Hope this was hlepful

[glendon29]

Im not sure how ur implementation is like but one thing to note that is very similar to the code base on how u use to check for the human servers. Just that keep in mind that once u get any free counters , immediately retrieve the first person in queue K+1 then generate the serve event

[ziyi105]

omg thank you guys for helping me, i managed to solved it!