Information Technology
CSE1IOO/CSE4IOO Assignment Specification
Semester 2, 2019
Objectives: the aim of this assignment is to practise analysing a problem in an object-oriented
manner, and designe and implement an object-oriented solution using JAVA language.
Due Date: 10:00am Monday October 14
th
, 2019.
1 General Information
General information about the assignment is specified in this section.
1.1 Assessment
This assignment contributes 30% of the final assessment for the subject.
1.2 Submission Instruction
Submit the electronic copy of your assignment via the ‘Online Assignment Submission’ system at
http://students.cs.latrobe.edu.au/student-tools/online-assign-submit/.
Alternately, you can also submit directly through the latcs8 server. In the Putty window, type:
submit IOO
Where is the name of the file you want to submit. You should run this for each file that
you intend to submit.
NOTE 1: While you are free to develop the code for this assignment on any operating system, your
solution must run on the latcs8 system.
NOTE 2: Please DO NOT zip your source code.
NOTE 3: You should only submit your .java files.
NOTE 4: The submission folder will only become available 3 days before the due date.
Submission after the deadline will incur a penalty of 5% of the final assignment mark per day. If
you have encountered difficulties that lead to late submission or no submission, you should apply
for special consideration. No assignment is accepted after 4 days’ delay.
1.3 Academic Integrity
This is an individual assignment. When submitting the assignment, students are required to submit
their own work only. La Trobe University treats plagiarism seriously. When detected, penalties are
strictly imposed.
Further information can be found on https://www.latrobe.edu.au/students/admin/academic-integrity
1.4 Programming Language
The program is required to be developed in JAVA.
CSE1/4IOO Assignment Due 10:00 Monday October 14th, 2019 Page 2 of 11
1.5 Marking Scheme Overview
The assignment consists of two parts:
(1) The core tasks, as shown in sections 3.1 – 3.6
(2) An additional task in section 3.7 (Task 3.7) This is a mandatory task for CSE4IOO students.
For CSE1IOO students, this task is optional. A maximum of 10% bonus marks will be
awarded if a CSE1IOO student completes or partially completes the task.
Assignment marking is based on the following guidelines
(1) Implementation (Execution of code) (80%) (Do all parts of the program execute correctly?
Does the program behave according to requirements of the assignment?)
Note that your program must satisfy the requirement 3.6. Up to 40% of mark deduction will
be made for submitting a program with a different data structure. This also means any direct
or indirect decedent classes of Collection interface in JAVA API, such as LinkedList,
ArrayList, Vector or HashSet etc are not allowed in the assignment.
(2) Program Design and Structure (15%) (Does the program solve the problem in a welldesigned manner?)
(3) Layout and Documentation (5%) (Does the code follow the Coding Standard?)
1.6 Execution Test
The execution test for the assignment is conducted during the lab session in Week 12 (i.e. between
21st and 25
th October). During the test, your tutor will run the program with you while marking it.
The test will be conducted from the submission area, not from student accounts. Please ensure that
your code runs on latcs8 before submission.
2 Problem Description
WordLink is an English vocabulary game for two players. Players are required to present English
words in turns, and the first character of the word must be the same as the last character of the
previous word. For example, while player A and player B are playing the game, if A presents the
word “grass”, then B has to give a word starting with ‘s’ which is the last character of “grass”. If B
presents “sunny”, then A needs to supply a word starting with ‘y’. A word cannot be used twice in
one game. The game continues till one of the players loses. There are four scenarios in which a
player loses the game. These are
(1) the player cannot find a word to continue the game.
(2) the player has presented a word which starts with a different character.
(3) the player has supplied a repeated word.
(4) the spelling of the word is incorrect
In any case, if one player is lost, then the other player wins the game. A number of examples of the
game are listed as below.
Example 1
(Player A) “grass” – (Player B) “sunny” – (A) “yellow” – (B) “world” – (A) “dog” – (B) “grass”
The game is ended and Player A wins. This is because “grass” is used twice.
Example 2
(Player A) “grass” – (Player B) “sunny” – (A) “yellow” – (B) “world” – (A) “dog” – (B) “out”
The game is ended and Player A wins. This is because player B is expected to present a word
starting with ‘g’, therefore “out” is not a proper choice.
CSE1/4IOO Assignment Due 10:00 Monday October 14th, 2019 Page 3 of 11
Example 3
(Player A) “grass” – (Player B) “sunny” – (A) “yellow” – (B) “world” – (A) “doog”
The game is ended and Player B wins. This is because “doog” is incorrectly spelt.
In this assignment, you are required to build a program that plays WordLink with a kindergarten
pupil. The pupil is player A and your program acts as player B.
A text file (dictionary.txt) containing a set of English words will be provided. You can assume
that dictionary.txt contains all English words that a kindergarten pupil may know. Words to be
used in playing the game must be selected from the file.
Each game should start by letting player A enter a word. Your program then needs to validate the
word (ie. if the word is included in dictionary.txt). If the word is invalid, then the game is
terminated and your program (player B) wins; otherwise your program needs to search the
dictionary to find and enter a proper word. Your program will then let player A to type a word to
continue the game. This can go back and forth a number of times till either your program or player
A wins.
3 Functional and Non-functional Requirements
Your program must satisfy the following functional and non-functional requirements.
3.1 Menu Driven
The program should be menu driven. It displays the menu displayed as Figure 1 at the start and
waits for the player to choose a function.
If A is selected, it allows the player to set a difficulty level. Details are described in 3.2.
If B is selected, it displays all words in the dictionary as described in 3.3.
If C is selected, it inserts a new word into the dictionary as described in 3.4.
If D is selected, it starts playing the game. Refer to 3.5 for details.
If E is selected, it saves all changes to dictionary.txt, and terminates the program execution.
WordLink
A. set the difficulty level
B. display the dictionary
C. insert a word to the dictionary
D. play the game
E. exit
Select a function from the menu:
Figure 1 menu
CSE1/4IOO Assignment Due 10:00 Monday October 14th, 2019 Page 4 of 11
3.2 Set the difficulty level
Your program should provide two difficulty levels for the game – level 1 and level 2.
dictionary.txt contains two sets of words – level 1 and level 2 words. When playing at level 2,
all words in dictionary.txt will be used, while level 1 games use only level 1 words.
Consequently, level 2 games are more difficult than level 1. At the start of your program execution,
the difficulty level is 1 by default.
If the player chooses to set the difficulty level, your program should prompt the player and wait for
an integer (1 or 2) input. The difficulty level is then set up.
A sample of dictionary.txt is displayed in figure 2.
3.3 Display the dictionary
If this function is selected, your program displays on the monitor all words in the dictionary
(including those being added). It displays words level by level with lower level at the front. Within
each level, words are displayed alphabetically in an ascending order. They should be displayed 7
words in a line and 5 lines for a screen. The player can press any key to display the next screen.
3.4 Insert a word to the dictionary
The player can insert a new word into the dictionary. To insert a new word, the player needs to
provide the word and the difficulty level. Your program must check to ensure the absence of the
word before adding. If the word is existing, then insertion cannot be performed and the player
should be informed.
3.5 Play the game
A game starts by your program prompting the player to enter a word. After a word is entered, your
program checks if the word exists in the dictionary. If it isn’t, then the player loses and the game is
over. If it is, then your program searches the dictionary and selects the first proper word to continue
the game. For instance, if “sad”, “sat”, “saw”, “say”, “sea”, “see”, “she”, “shy”, “sun” are all
available for selection, your program chooses the first word which is “sad”.
1
ant yes bag who and car cry do zoo dog ear
my mum eat are eye fat dad win fun go get
got he had has have her him his hand it
xmas ice icy jam jar jaw kick key lap leg
owl out baby me mug new not old you oil one
pat pie web why put rat pan say paw was run
she bye sat sea see sun tea toe too toy two
use red van we quack wag
2
quick arm box way cup day shy did egg fur
yum may foot gas hop hen ill lid low map
nod oak our pea ran saw sad top rub try
uncle won zero mob pink
levels
words of level 1
words of level 2
Figure 2 sample of dictionary.txt
CSE1/4IOO Assignment Due 10:00 Monday October 14th, 2019 Page 5 of 11
3.6 The dictionary
After your program is started, it should read from dictionary.txt to create the dictionary. The
dictionary in your program must be an array of linked lists shown in Figure 3. Each node represents
a word and its level. Words must be sorted alphabetically in an ascending order on the linked list. If
a new word is added, then the word with its level must be inserted to the linked list at a proper
position.
Figure 3 Structure of the dictionary
……
dictionary
Y
A
B
G……
D
S…… ……
W……
Z
zero 2
and 1 ant 1
baby 1
dad 1
gas 2
are 1 ……
sad 2
wag 1
yes 1 you 1 yum 2
zoo 1
……
……
……
……
……
CSE1/4IOO Assignment Due 10:00 Monday October 14th, 2019 Page 6 of 11
3.7 Bonus Task (Mandatory for CSE4IOO students, optional for CSE1IOO)
Instead of only being able to play against the computer, add a menu option for a two-player game
and implement its functionality. A sample run of this is at the end of section 6.
4 Code Segments
Below are code segments that must be included in your program.
public class DictionaryNode
//object of the class represents a single word
protected String word; // word to be stored
private int level; // level of the word
private DictionaryNode next;
public DictionaryNode(String _word, int _level)
//add your implementation for the constructor
//add any other attributes or methods if needed
public class ListOfNodes
//object of the class represents a linked list of words starting
//with a specific character.
private DictionaryNode head = null; //head of the linked list
//add any other attributes or methods if needed
public class Dictionary
//object of the class represents the whole dictionery
private ListOfNodes[] data;
//add any other attributes or methods if needed
5 Program Development
The following is a suggested breakdown for completing this assignment:
Task 1 Creating the Menu
Create the menu display, collect user’s input and write a method stub for each menu option. Ensure
that the correct function is called.
Task 2 File Handling
In Task 2, you need to consider all issues related to reading the text file (dictionary.txt) to
obtain words and their levels. You can simply display contents read from the text file to ensure file
reading is correctly conducted.
Task 3 Defining Classes
In this task, implement major classes for the assignment. This includes the necessary menu and
interactions with the player for choosing options etc.
CSE1/4IOO Assignment Due 10:00 Monday October 14th, 2019 Page 7 of 11
Task 4 Linked Lists
Implement classes required for linked lists and dictionary. Implement methods (such as
insertInOrder, search etc) which are operations associated with the list and any other methods.
Thoroughly test your linked list before integrating it into your program.
6 Sample of Execution
A sample of the program execution is as follows.
% java WordLink
WordLink
A set the difficulty level
B display the dictionary
C insert a word to the dictionary
D play the game
E exit
Select a function from the menu: A
Set the difficulty level
The current difficulty level is 1. Type the new level: 2
The difficulty level has now been set as 2.
WordLink
A set the difficulty level
B display the dictionary
C insert a word to the dictionary
D play the game
E exit
Select a function from the menu: B
Display the dictionary
Level 1
and ant are baby bag bye car
cry dad do dog ear eat eye
fat fun get go got had hand
has have he her him his ice
icy it jam jar jaw key kick
press a key to continue …
lap leg me mug mum my new
not oil old one out owl pan
pat paw pie put quack rat red
run sat say sea see she sun
tea toe too toy two use van
press a key to continue …
CSE1/4IOO Assignment Due 10:00 Monday October 14th, 2019 Page 8 of 11
wag was we web who why win
xmas yes you zoo
press a key to continue …
Level 2
arm box cup day did egg foot
fur gas hen hop lid ill low
map may mob nod oak our pea
pink quick ran rub sad saw shy
top try uncle way won yum zero
press a key to continue …
WordLink
A set the difficulty level
B display the dictionary
C insert a word to the dictionary
D play the game
E exit
Select a function from the menu: C
Insert a word to the dictionary
Enter the word: wear
Difficulty level: 1
“wear” is inserted.
WordLink
A set the difficulty level
B display the dictionary
C insert a word to the dictionary
D play the game
E exit
Select a function from the menu: C
Insert a word to the dictionary
Enter the word: quack
Difficulty level: 2
“quack” exists in the dictionary. Insertion aborted.
CSE1/4IOO Assignment Due 10:00 Monday October 14th, 2019 Page 9 of 11
WordLink
A set the difficulty level
B display the dictionary
C insert a word to the dictionary
D play the game
E exit
Select a function from the menu: B
Display the dictionary
Level 1
and ant are baby bag bye car
cry dad do dog ear eat eye
fat fun get go got had hand
has have he her him his ice
icy it jam jar jaw key kick
press a key to continue …
lap leg me mug mum my new
not oil old one out owl pan
pat paw pie put quack rat red
run sat say sea see she sun
tea toe too toy two use van
press a key to continue …
wag was we wear web who why
win xmas yes you zoo
press a key to continue …
Level 2
arm box cup day did egg foot
fur gas hen hop lid ill low
map may mob nod oak our pea
pink quick ran rub sad saw shy
top try uncle way won yum zero
press a key to continue …
CSE1/4IOO Assignment Due 10:00 Monday October 14th, 2019 Page 10 of 11
WordLink
A set the difficulty level
B display the dictionary
C insert a word to the dictionary
D play the game
E exit
Select a function from the menu: D
play the game (Level 2)
Enter a word: tea
tea – and – day
tea – and – day – yes – sun
tea – and – day – yes – sun – new – what
“what” doesn’t exist in the dictionary. You didn’t win.
WordLink
A set the difficulty level
B display the dictionary
C insert a word to the dictionary
D play the game
E exit
Select a function from the menu: D
play the game (Level 2)
Enter a word: may
may – yes – say
may – yes – say – you – uncle
may – yes – say – you – uncle – ear – red
may – yes – say – you – uncle – ear – red – dad – day
may – yes – say – you – uncle – ear – red – dad – day – yum – my
Well done! You win.
WordLink
A set the difficulty level
B display the dictionary
C insert a word to the dictionary
D play the game
E exit
Select a function from the menu: E
Updating dictionary.txt … Bye
CSE1/4IOO Assignment Due 10:00 Monday October 14th, 2019 Page 11 of 11
A sample of the program execution containing the additional two-player task is as follows.
% java WordLink
WordLink
A set the difficulty level
B display the dictionary
C insert a word to the dictionary
D play the game (1 player)
E exit
F play the game (2 players)
Select a function from the menu: f
Play the game (2 Players – Level 1)
P1: Enter a word: has
P2: – has – see
P1: – has – see – ear
P2: – has – see – ear – run
P1: – has – see – ear – run – now
“now” isn’t in the level 1 dictionary!
–Player two wins!–
WordLink
A set the difficulty level
B display the dictionary
C insert a word to the dictionary
D play the game (1 player)
E exit
F play the game (2 players)
Select a function from the menu: F
Play the game (2 Players – Level 1)
P1: Enter a word: wag
P2: – wag – go
P1: – wag – go – oil
P2: – wag – go – oil – line
“line” isn’t in the level 1 dictionary!
–Player one wins!–
WordLink
A set the difficulty level
B display the dictionary
C insert a word to the dictionary
D play the game (1 player)
E exit
F play the game (2 players)
Select a function from the menu: e
Updating dictionary.txt … Bye
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