Homework $5$: Train Schedule

$1$ Objective

Between the two largest cities of Russia, St$.$ Petersburg and Moscow make daily trips of

N trains. For each train, it is known its departure time from St$.$ Petersburg and the time

of arrival in Moscow. You need to find the fastest train and its speed. It is guaranteed

that the fastest train is determined uniquely.

In this project you need to create $2$ Objects.

$2$ User Interface

In this homework, you need to use the user interface client code for working with your

supplier classes.

$3$ Input Data Files and storage

The text file INPUT.TXT has this format:

a$)$ start with one integer on its own line represents the distance between two cities

b$)$ next line $$ one integer $($the number of trains in the everyday schedule $1<=$ N $<=100)$

c$)$ followed by a series of lines that describe every train. This description contains $3$

pieces of information:

$$ a train name $-$ a string with a length of $1$ to $50$ characters. It can contain letters

of the English alphabet, spaces, numbers, and dashes $("-").$ Lowercase and

uppercase letters in the names of trains vary.

$$ time of departure and arrival is indicated in a $24-$hour format as follows HH MM$.$

The format specifies hours $(2$ digits$)$ and minutes $(2$ digits$)$ separated by a space.

The journey time for each of the trains is at least one minute and does not exceed

$24$ hours. Pay attention to this example, if the train departs at $19$:$50$ and arrives

at $8$:$30,$ it means that it arrives the next day and the time of journey is $12$ hours

and $40$ minutes.

$4$ Code Specification

Implement the class specifications below. To get full credit, your program's public

interface must match these descriptions exactly.

In this project use only one train from the file, the whole file you will need to use in

the HW$5-$ Part$2.$

Objects You$$ll Create

Here are UML Class Diagrams for the objects you are to create. Pay attention to the diagram

notation indicating whether methods are public $(+)$ or private $(-)$; ask questions if you need

clarification. Understanding the model is of critical importance here.

Class: Time Class: Train

Properties

$($you figure out the private data needed$)$

Properties

$($you figure out the private data needed$)$

Constructor

$+$Time$($hour : Integer, minute : Integer$)$

Accessors

$+$ getHour$()$ : Integer

$+$ getMinute$()$ : Integer

Mutators

$+$setHour$($Integer$)$

$+$setMinute$($Integer$)$

$+$timeBetween$($Time$)$ : Time

$+$zeroTime$($Integer$)$ : String

$+$toString$()$ : String

Constructor

$+$Train$($name : String, departure : Time,

arrival: Time, distance : Integer$)$

Accessors

$+$getDeparture $()$ : Time

$+$getArrival $()$ : Time

$+$getDistance $()$ : Integer

Mutators

$+$setDeparture$($Time$)$

$+$setArrival$($Time$)$

$+$setDistance$($Integer$)$

$+$averageSpeed$()$ : Integer

$+$travelTime$()$ : Time

$+$toString$()$ : String

Hint. The method zeroTime$($Integer$)$ uses for formatting the output as follows:

Hour $=8,$ minute $=5.$ Output should be $08$:$05.$ Us this format in the toString$()$ method.

$5$ Output

Speed output in kilometers per hour and round to the nearest whole by mathematical

rules. Follow the output format shown in the examples.

Example of output:

Night Express

Departure $23$:$55$

Arrival $08$:$15$

Travel Time $08$:$20$

Average speed $78$ km$/$h