Assignment No. 2 Programming Language Paradigms

Assignment No. 2
EECS 368
Programming Language Paradigms

Deliverables:
1. Copy of Rubric2.docx with your name and ID filled out (do not submit a PDF)
2. JavaScript source code.
3. Screen print showing the successful execution of your JavaScript code. (Copy and
paste the output from a web browser console screen to a Word document and PDF
it).
Assignment:
• The standard JavaScript environment provides another data structure called Set.
• A set holds a collection of values (from Set Theory – EECS 210, see Sets & Set
Operations.pptx for a review).
• A value can be part of a set only once—adding it again doesn’t have any effect.
• Write a class called Group (since Set is already taken).
• Group should have 6 methods: add, delete, has, union, intersect, and difference.
• Its constructor creates an empty group.
• add adds a value to the group (but only if it isn’t already a member)
• delete removes its argument from the group (if it was a member)
• has returns a Boolean value indicating whether its argument is a member of the
group
• union returns the union of the group and the argument, which should be another
group: this ∪ argument
• intersection returns the intersection of the group and the argument, which should
be another group: this ∩ argument
• difference returns the difference of the group and the argument, which should be
another group: this - argument
• Test your Group class with the following code:
let group1 = new Group();
let group2 = new Group();
group1.add(1);
group1.add(2);
group1.add(3);
console.log(group1);
group2.add(2);
group2.add(3);
group2.add(5);
group2.add(2);
console.log(group2);
console.log(group1.has(5));
console.log(group2.has(3));
console.log(group1.union(group2));
console.log(group1.intersection(group2));
console.log(group1.difference(group2));
group1.delete(1);
console.log(group1);
group2.delete(1);
console.log(group2);
• Provide comments that explain what each line of code is doing. You may
comment each line of code (using //) and/or provide a multi-line comment
(using /* and */) that explains what a group of lines does. Multi-line
comments should be detailed enough that it is clear what each line of code is
doing. See rubric below.
• Do not use the built-in Set data structure in your code. Note: code for “union”
that you find on the Internet may use the “Set” data structure.
Rubric for Program Comments
Exceeds Expectations
(90-100%)
Meets Expectations
(80-89%)
Unsatisfactory
(0-79%)
Software is adequately
commented with prologue
comments, comments
summarizing major blocks of
code, and comments on every
line.
Prologue comments are present
but missing some items or some
major blocks of code are not
commented or there are
inadequate comments on each
line.
Prologue comments are missing
all together or there are no
comments on major blocks of
code or there are very few
comments on each line.
Remember:
• Your Programming Assignments are individual-effort.
• You can brainstorm with other students and help them work through problems in
their programs, but everyone should have their own unique assignment programs.