Poset , computer science, Basic Computer Science

Assignment Help:
1. (40 points) Add a course drop method to the system that you implemented in Problem Set
1. Modularize your new implementation properly. For any new methods that you introduce:
1. Write a speci cation.
2. Write an implementation sketch.
3. Annotate the code.
2. (80 points) A partially ordered set (PoSet) is a pair (S; R) where S is a set and R  S  S
is a binary relation over S such that:
 R is re
exive: 8 x 2 S : xRx
 R is antisymmettric: 8 x; y 2 S : xRy ^ yRx ) x = y
 R is transitive: 8 x; y; z 2 S : xRy ^ yRz ) xRz
R is called a partial order over S.
Implement PoSet as an abstract data type. Your implementation must provide the following
operations:
 Create an empty partially ordered set (S; R), i.e., S = ;, R = ;.
 Add an element x to S: S := S [ fxg, with R remaining unchanged.
 Add an ordering between two existing elements x; y 2 S: R := R [ (x; y), provided that
this does not violate the partial order conditions.
 Answer a membership query x 2 S.
 Answer an ordering query (x; y) 2 R.
You may use any class in the Java collections framework.
Your solution must include the following:
1. An abstraction function and representation invariant for the class that implements PoSet.
2. Overview statements for every class.
3. Speci cation, implementation sketch, and annotation for all methods, with the exception
of very simple and obvious methods such as one line getter methods.

Related Discussions:- Poset , computer science

Visual Basic, difference between genral and event procedures

difference between genral and event procedures

CAI, What is CAI? Explain its pitfalls

What is CAI? Explain its pitfalls

Describe the binary search algorithm, QUESTION 1 Describe the binary se...

QUESTION 1 Describe the binary search algorithm using an example of your own. QUESTION 2 (a) By showing all your workings, give a big-O estimate for f(x) = (x + 1)lo

COMPUTER, DUNIYA KA AISA KONSA KOMPUTER HAI. JISME KEYBORD, MOUSE NAHI HAI?...

DUNIYA KA AISA KONSA KOMPUTER HAI. JISME KEYBORD, MOUSE NAHI HAI?

Courier company , disvange and advantege of providing intternet sservice to...

disvange and advantege of providing intternet sservice to customer

Memory of computer, Memory : Computers store information internally as wel...

Memory : Computers store information internally as well as externally. Linked to CPU is an internal memory unit where all the instructions and data are stored. It contains the

Port in a computer, what is the need of a port in a computer?

what is the need of a port in a computer?

Input and output device, Input and Output device: After having underst...

Input and Output device: After having understood the characteristics relating to CPU and storage media, let us try to learn about I/O aspects of a computer system. Input /outp

Distinguish between buffering and caching, QUESTION (a) Describe what y...

QUESTION (a) Describe what you understand by (i) "openness" and (ii) "Scalability" of a distributed system (b)What is the role of middleware in a distributed system? (c)

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd