help3002

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help3002

This forum is provided to promote discussion amongst students enrolled in CITS3002 Computer Networks.

Please consider offering answers and suggestions to help other students! And if you fix a problem by following a suggestion here, it would be great if other interested students could see a short "Great, fixed it!" followup message. How do I ask a good question?

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UWA week 17 (1st semester, week 8) ↓

project Can't reach destination in one day - wait overnight or not? (all 5)

8:44pm Thu 25th Apr, Ethan vB.

Hi, Just checking, but if you reach an intermediate station at 10pm, and the last train was at 9pm, should you wait until the next train at 6am the next day, or just say you cannot get to the destination? (Also, can we assume that the timetable will be roughly the same day by day - so we can assume if the first train on today's timetable is 6am, then it will be the same tomorrow?) Thanks, Ethan

project Can't reach destination in one day - wait overnight or not? (all 5)

6:57am Fri 26th Apr, Christopher M.

"Ethan van Bruchem" <23*2*7*6@s*u*e*t*u*a*e*u*a*> wrote:

> Hi, > Just checking, but if you reach an intermediate station at 10pm, and the last train was at 9pm, should you wait until the next train at 6am the next day, or just say you cannot get to the destination? > (Also, can we assume that the timetable will be roughly the same day by day - so we can assume if the first train on today's timetable is 6am, then it will be the same tomorrow?)

Hello Ethan, Let's assume (guarantee) that every journey can be completed on the day it was started - if a requested journey can't be completed by 11:59PM any day, then it "doesn't exist", and that condition should be reported back via the web-browser. Yes, we'll assume that every day's timetables are the same - identical 7 days a week, no weekends, no public-holidays.

project Can't reach destination in one day - wait overnight or not? (all 5)

9:45am Fri 26th Apr, ANONYMOUS

Some timetables go past midnight and will say, for example, "24:16". Should we discard these times or keep them?

project Can't reach destination in one day - wait overnight or not? (all 5)

11:30am Fri 26th Apr, Ethan vB.

Thanks for your help!

project Can't reach destination in one day - wait overnight or not? (all 5)

2:56pm Fri 26th Apr, Christopher M.

ANONYMOUS wrote:

> Some timetables go past midnight and will say, for example, "24:16". Should we discard these times or keep them?

You must be looking in the Transperth data, already. Yes, we'll just ignore any trips starting or finishing after midnight.