CSEOOF Semester XXXXXXXXXXAssignC OOF Assignment Part D - due: Tuesday, 22 October 2019, at 10.00 a.m. this is the first and final hand in date Page 1 of 9 Department of Computer Science and...

CSEOOF Semester XXXXXXXXXXAssignC
OOF Assignment Part D - due: Tuesday, 22 October 2019, at 10.00 a.m. this is the first and final hand in date Page 1 of 9
Department of Computer Science and Information Technology

La Trobe University

CSE1OOF / CSE4OOF Semester 2, 2019
Assignment Part D
Due Date: Tuesday, 22 October 2019, at 10.00 a.m.

First and Final date for SUBMISSION Tuesday, 22 October 2019, at 10.00 a.m.


Delays caused by computer downtime cannot be accepted as a valid reason for a late submission.
Students must plan their work to allow for both scheduled and unscheduled downtime.
There are NO EXTENSIONS on this assignment as execution test marking will begin on
Wednesday, 23 October – in your normal lab (Week 12)
This is an individual assignment. You are NOT permitted to work as a group when writing
this assignment.

Copying, Plagiarism: Plagiarism is the submission of somebody else’s work in a manner that
gives the impression that the work is your own. The Department of Computer Science and
Information Technology treats academic misconduct seriously. When it is detected, penalties are
strictly imposed. Refer to the unit guide for further information and strategies you can use to avoid
a charge of academic misconduct. All submissions will be electronically checked for
plagiarism.
Assessment Objectives:
 to design programs that conform to given specifications
 to practise combining multiple classes and methods into a whole program
 to implement programs in Java.

Submission Details: Full instructions on how to submit electronic copies of your source code
files from your latcs8 account are given at the end. If you have not been able to complete a
program that compiles and executes containing all functionality, then you should submit a
program that compiles and executes with as much functionality as you have completed. (You
may comment out code that does not compile.)

Note you must submit electronic copies of your source code files using the submit command
on latcs8. Ensure you submit all required files, one file at a time. For example, the file
Vector.java would be submitted with the command:

> submit OOF Vector.java



PLEASE NOTE: While you are free to develop the code for this progress check on any operating system,
your solution must run on the latcs8 system.
Marking Scheme: This assignment is worth 10% of your final mark in this subject.
Implementation (Execution of code) 100%
You may be required to attend a viva voce (ve
al explanation of your code) assessment
(to be used as a weighting factor on the final mark).
Do NOT use the LMS or EMAIL to submit your files, use latcs8 only
OOF Assignment Part D - due: Tuesday, 22 October 2019, at 10.00 a.m. this is the first and final hand in date Page 2 of 9
Return of Mark sheets:
The face to face execution test marking in the lab (Week 12) constitutes a return of the assignment
mark.

Please note carefully:

The submit server will close at 10:00 am on Tuesday, 22 October 2019.

After the submit server has closed, NO assignments can be accepted.

Please make sure that you have submitted all your assignment files
efore the submit server closes.

There can be NO extensions or exceptions, unless a request is made
efore the deadline using the following link, together with a medical
certificate that certifies a medical condition.
https:
www.latrobe.edu.au/students/admin/forms
equest-an-extension
equest

Your assignment will be marked in your normal lab from Wednesday,
23 October 2019.

You should attend your assigned lab; however, any other lab will be ok.
You may have the assignment marked later, as it is marked from the
submit server, not from your student account.

All OOF assignments are marked from the submit server, never
from a student's account. Please make sure that you submit you
assignment on time.

If you need to a
ange a time other than your normal lab, please email
the lecturer Dr Tian Feng ( XXXXXXXXXX).




https:
www.latrobe.edu.au/students/admin/forms
equest-an-extension
equest
OOF Assignment Part D - due: Tuesday, 22 October 2019, at 10.00 a.m. this is the first and final hand in date Page 3 of 9





Please also note carefully that whilst we encourage innovation and exploring java beyond what
has been presented in the subject to date, above all, we encourage understanding.

The assignment that follows can be solved using techniques that have been presented in
lectures, lecture / workshops and labs so far.

These are the techniques and knowledge that we will later be examining in the Real Time Test
(20 marks) and the exam (50 marks).

Code and techniques that are outside the material presented will not be examined, of course.

You are free to implement the program below in any way, with one condition.

Any assignment that uses code that is outside what has been presented to this point must be
fully explained at the marking execution test. Not being able to fully explain code outside
what has been presented in the subject so far will result in the assignment being awarded a
mark of 0, regardless of the co
ectness of the program.

Submitting an assignment with code outside what has been presented so far and not attending
the marking execution test will result in an automatic mark of 0, regardless of the co
ectness of
the submission.

Unless stated, all attributes must have private as their access
modifier. Any classes that have any non-private object attributes will
esult in the whole assignment mark being heavily reduced, up to and
including, being awarded 0, regardless of the co
ectness of the
program. This includes omitting access modifiers, which means that
the object attributes have the java default access modifier package.





Using code not taught in OOF - READ THIS
Access Modifiers in objects

OOF Assignment Part D - due: Tuesday, 22 October 2019, at 10.00 a.m. this is the first and final hand in date Page 4 of 9
Task 1: Vector

In mathematics and physics, a vector is an element of a vector space. If the space is N
dimensional, such a vector consists of N scalars. For example, the vector (0, 0) represents the
origin point of a two-dimensional Euclidean space.

Task 1 requires you to write a Java class for a simplified vector that handle integer scalars. To
enable rapid development of the program, the following Java file is provided:

Vector.java

An object of Vector class has the following attributes:

• values This is an integer a
ay that stores a collection of input integers passed in
a constructor. Note its access mode is protected.
• size This is an integer that represents the size of values attribute, i.e. the
number of input integers. Note its access mode is protected.

Vector class has the following two overloaded constructors:

• The first constructor has two parameters: an integer a
ay that stores input integers
passed by users, and an integer that represents a default value. It takes following actions:
1. If the integer a
ay parameter is null or contains less than two elements, values
attribute is initialised of length 2, and both elements inside are set to the default
value parameter; otherwise, values attribute is initialised of the same length as the
integer a
ay parameter, and all elements in the integer a
ay parameter are copied
to values attribute. Note it is NOT allowed to assign the value of the integer
a
ay parameter to values attribute. (Recall that an a
ay is an object, and its
co
esponding object variable holds a memory address)
2. size attribute is set to the actual length of integer attribute.

• The second constructor has any number of integers as parameters for values attribute.
It takes similar actions to what the first constructor does, with the default value parameter
of zero (0). Note the second constructor is required to reuse the first constructor.
(Recall what you have learned on the this keyword and varargs)

Vector class has the following four methods:

• toString

This is a public ove
ided method, which has no parameters but returns a String to
epresent the information about the cu
ent object’s values attribute. For example, if the
values attribute has elements {2, 2, 2, 2}, the returned String is “[ XXXXXXXXXX ]”.
• getValues

This is a public method, which has no parameters but returns an integer a
ay. Specially,
it returns a copy of all elements in values attribute. Note it is NOT allowed to return
values attribute here. (Recall private leakage)
• getSize

OOF Assignment Part D - due: Tuesday, 22 October 2019, at 10.00 a.m. this is the first and final hand in date Page 5 of 9
This is a public method, which has no parameters but returns an integer. Specially, it
eturns the value of size attribute.
• main

This is a public static method to test the class and has been provided already. Note it is
NOT allowed to make any change on this method. If the class is co
ectly written, it is
supposed to output following information:

[ 0 0 ]
[ 0 0 ]
[ 1 2 ]
[ 1 1 ]
[ 4 5 6 ]
[ 4 5 6 ]
[ 4 5 6 ]
Marking Requirement

Task 1 is worth 40 mark in this assignment. Any of the following actions will lead to a