1
Decorator Pattern
Decorator pattern allows providing enhanced behavior to an existing classs methods. It is
a flexible alternative to sub classing. It is especially useful when we wanted to provide
more than one enhancement (decoration) to a method and
State Pattern: (C:\DesignPattersAfternoon)
ICheckingActivity interface:
interface ICheckingActivity
cfw_
/ these may cause the account to change state
void WithDrawMoney(double amt);
void DepositMoney(double amt);
void AddInterest();
-CheckingAccount cla
1
Design Patterns Creational
Singleton Pattern
The purpose of the Singleton pattern is to guarantee that there is only a single instance of
the class available, and to provide an access to this single instance. It is easily achieved
by declaring the const
1
Design Patterns Behavioral
Strategy Pattern:
Strategy pattern allows encapsulation of related algorithms so that one algorithm can be
easily interchanged with another one.
Example: Create a new windows forms application project called StrategyPattern. A
Tracey 1
Jolly Tracey
Professor Kim Butz
English 101
September 29, 2014.
Income Inequality
The United States, the land of opportunities, or so it seems. The United States isnt all it is
played out to be. The country is filled with people working three or
Tracey 1
Jolly Tracey
Professor Kim Butz
English 101
September 29, 2014
We Need More Poverty
The United States of America has become a place where emphasis is placed on the wrong
things. Instead of headlining a person that donated ten thousand dollars to
Tracey 1
Jolly Tracey
Professor Kim Butz
English 101
September 29, 2014
Education
An education is one of if not the most important thing to have in this world we live in
today. We grow our children up trying to get them into the best schools, telling them
Tracey 1
Jolly Tracey
Professor Kim Butz
English 101
September 29, 2014
I Decided To Win
A couple days away from the meet and I was feeling sick, not to mention I missed three days
of training the week before, due to this flu. I was feeling discouraged an
Tracey, 1
Jolly Tracey
Professor Kim Butz
English 101
Why Technology Belongs
The sole purpose of technology ever since the beginning was to make life easier and
better for man. Technology has been the chief reason of progress in the world, according to th
Tracey 1
Jolly Tracey
Professor Kim Butz
English 101
September 29, 2014
College Tuition: Why So Expensive?
Why has seeking for a higher education become so expensive? Why in our quest to become
successful and rich in life has put us at risk of living in d
Pattern Matching finding an occurrence of a string within another string
Technique used in searches to find a pattern in a file, for example.
Initial Idea: Brute Force Algorithm
TEXT: acabdaccacac = t0t1t2t3t4t5t6t7t8t9t10t11 where the length of the text
Theorem: The average number of comparisons Cn to Quicksort a random file of N elements is
approximately 2nlnn.
Assume C0 = C1 = 0
Proof of Average Complexity of Quicksort
Cn = n + 1 + (C0 + Cn-1) + (C1 + Cn-2) . + . (Ck-1 + Cn-k) . + . +(Cn-1 + C0)/n
n is
Asymptotic Notation
Allows us to compare the complexity of a given function to a
known complexity.
We are mainly interested in the growth of functions as n gets
large, goes to infinity.
Asymptotic Notation - 2013
Asymptotic Notation O, , and
Set Notation
Linear Programming
Linear Programming or Mathematical Programming involve a set of variables
related by a set of mathematical equations, referred to as constraints and an
objective function.
Example: Maximize
x1 + x2
Subject to the constraints:
-x1 + x2 5
In RPF the core computations are performed on _
a)
b)
c)
d)
Remote systems
Mobile computer
Computers
Computing devices
Answer:(b) Page:10
The language Runtimes represents the cyber foraging system can automatically extract application
contents in how many
An Intelligent Context Aware Resource Discovery for
Heterogeneous IP Networks
Guna Sekhar Yanugant
1006328
An Intelligent , Context Aware Resource Discovery for Heterogeneous IP
Networks (2014)
R.Ananthalakshmi, Aneesh Kumar K.B ,Ansar Rahim K., Anoop Arv
1. We have two algorithms which solve the same problem. The variable p is a
probability value so that 0 p 1.
Algorithm 1 has an average complexity of
1 () = + (1 )
Algorithm 2 has an average complexity of
2 () =
a. Solve for the expression for the value
1. Find the specific solution and cross check your answer
= 1 + 42 + 43
Where,
0 = 8,
1 = 6, and
2 = 26
Method of Characteristic Roots
Let = , Substituting this in original recurrence relation, we have:
= 1 + 4 2 + 4 3
= 1 + 4 2 + 4 3
Dividing by 3, we
Homework # 1 CS502 Analysis of Algorithms
Problem 1:
Using direct proof, prove that if is an integer which is divisible by 5 then 3 is divisible by 15
If is divisible by 5, so
= 5 where ,
Multiplying both sides by 3
3 = 3 5
3 = 15
Hence proved if any nu
2016 Ramez Elmasri and Shamkant B. Navathe
Slide 5- 1
Chapter 5
The Relational Data Model and Relational Database Constraints
2016 Ramez Elmasri and Shamkant B. Navathe
2
Chapter Outline
Relational Model Concepts
Relational Model Constraints and Relatio
2016 Ramez Elmasri and Shamkant B. Navathe
Slide 4- 1
Chapter 4
Enhanced Entity-Relationship (EER) Modeling
2016 Ramez Elmasri and Shamkant B. Navathe
2
Chapter Outline
EER stands for Enhanced ER or Extended ER
EER Model Concepts
Includes all modeling
2016 Ramez Elmasri and Shamkant B. Navathe
Slide 3- 1
Chapter 3
Data Modeling Using the Entity-Relationship (ER) Model
2016 Ramez Elmasri and Shamkant B. Navathe
2
Chapter Outline
Overview of Database Design Process
Example Database Application (COMPANY
Copyright 2016 Ramez Elmasri and
Shamkant B. Navathe
Slide 2- 1
Chapter 2
Database System Concepts and Architecture
Copyright 2016 Ramez Elmasri and
Shamkant B. Navathe
2
Outline
Data Models and Their Categories
History of Data Models
Schemas, Instance
CPSC 551 Advanced Database Design
Chapter 3 Hand-out
* Overview of Database Design Process
* Requirements collection and analysis
We need to create a database schema design based on the following (simplified)
requirements of the COMPANY Database:
The com
CPSC 551 Advanced Database Design
Chapter 4 Hand out
* Requirements for the UNIVERSITY database
For our example database application, consider a UNIVERSITY database that keeps track of students and their
majors, transcripts, and registration as well as of
CPSC 503 Operating Systems
Summer 2015
Project 1 A game of Hex
Objectives:
1. Work with multiple processes
2. Become familiar with Inter-Process Communication
3. Gain experience with an industry standard OS
Due: Monday June 8, 2015. 11:59:59 PM (EST)
Thes
Operating Systems
Quiz 1 (Chapter 3 and 4)
Name: _ UB ID: _
1. Using the program in below, identify the values of pid at lines A, B, C, and D. (Assume that the actual
pids of the parent and child are 2600 and 2603, respectively.)
#include <sys/types.h>
#i