Poset , computer science, Basic Computer Science

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.
Posted Date: 3/3/2012 12:39:30 PM | Location : United States







Related Discussions:- Poset , computer science, Assignment Help, Ask Question on Poset , computer science, Get Answer, Expert's Help, Poset , computer science Discussions

Write discussion on Poset , computer science
Your posts are moderated
Related Questions
write a 2 page essay operational gaming and monte carlo simulation

what is ms dos?

1. What actions need to be taken when a program terminates or a process is killed? What if that process destruction is not the consequence of normal termination, but rather is the

assignment 1:architectural design 2: component design

Qestion 1 What is .Net Framework? Qestion 2 Write short notes on constructors and destructors Qestion 3 Explain boxing and unboxing with examples Qestion 4 What is

When purchasing a database program, you must have a clear idea of what you need it for. Ask yourself the following questions. (1) Will it perform all (he operations necessary f

i want design circuit this Buffer(LIFO).please help me

types of computer on the basis of shape, size & resources

i have attached all files in zip folder, all files are given and act as headers, all what you need to work on: oaa.h "partially given" , wordbench2.h "needed", wordbench2.cpp "nee

The Scheduling algorithms can be divided into two parts with respect to how they deal with clock interrupts. 1) Nonpreemptive Scheduling: A scheduling