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CS 1120 – COMPUTER SCIENCE II   (with C#)

 Fall 2007

Department of Computer Science

Western Michigan University


Instructor:          Dr. Ajay Gupta

Office:               B-239  

Lectures:           TR 11:30 - 12:45 (C-224)

Office Hours:    TR 2:30 - 3:30 and by   


Home page:       


Class pages: Blackboard Vista plus



Email: gupta@cs.wmich.edu


Instructor :        Dr. Leszek Lilien

Office:              B-249

Lectures :         TR 1 :00 – 2 :15 (C-224)

Office Hours:   T  5:15 – 6:15

                         R 11:45 – 12:45, 5:15 – 6:15

Home page:      


Class pages:           Blackboard Vista plus



Email:  llilien@cs.wmich.edu


Lab Instructor: Adawia Al-Alawneh

Office:             A-214 (Graduate Carrels)

Lab (C-224):    W 2:30 pm - 4:20pm

Office Hours:   M 2:30 pm - 4:20pm
                         W 12:30 pm - 2:30pm

Home page: 


Lab pages: Blackboard Vista only

Email:        Adawia.Alalawneh@wmich.edu


Lab Instructor: Mohammed Ahmed Rushdi

Office:              A-214 (Graduate Carrels)      

Lab (C-224):     M 1:30 pm - 3:30 pm  

Office Hours:    M 3:30 pm - 6:00 pm

                          T  3:30 pm - 5:00 pm

Home page:


Lab pages: Blackboard Vista only

Email:       m.a.rushdi@gmail.com


Email requirements for  L. Lilien

Please send e-mail to me only in important and urgent matters. I can’t and will not handle other messages.
Only messages conforming to the following requirements will be read by me:

a)            Sent from a WMU account - ending with “wmich.edu” (of course, this includes accounts ending with “cs.wmich.edu”).

b)            Each message must have a descriptive subject with the indicated prefix:

CS1120-F07--<your last name>: <descriptive subject here>

    For example, subjects of John Smith’s messages must be as follows:

CS1120-F07--Smith: <descriptive subject here>

c)  Attached files must be scanned with up-to-date anti-viral software, and the message including them must contain the following statement:

                I have scanned the enclosed file(s) with <name of software,

                its version>, which was last updated on <date>.

where <date> should be today’s date. (You should have the habit of updating your anti-viral software daily!)


Catalog Description of CS 1120

This is the standard Computer Science II course using the C# computer language. The emphasis is on designing and programming object-oriented computer solutions to problems, as well as on the data structures used for this purpose. An introduction to the analysis of algorithms is made. Students must register for both a lecture section and a laboratory section.



By Courses: CS1110 – Computer Science I or equivalent with a grade of C or better (prerequisite); Math1220 or Math 2000 (co-requisite)

By Topic: Basic concepts of high-level language programming – conditional structures; looping structures; arrays; program logic –  to solve problems; Basics of object oriented programming - be able to create and use elementary objects; C# language for both procedural and introductory object oriented programming; Basics of the software life cycle; Validating quality of software produced; Introductory sorting and searching algorithms; Algorithms for elementary problem solutions; Documenting programs effectively and efficiently.





Lean about each phase in software life cycle.

Understand the concepts of abstract data types. 

Understand the concepts of recursion, inheritance, and polymorphism.

Learn basic mathematical techniques for analyzing algorithm complexity.

Learn common data structures


Performance Objectives


Student will be able to write well-designed and well-documented programs.

Student will be able to use recursive solutions to solve complex applications. 

Student will be able to use abstract data types and hide implementation from users.

Student will know the data structures such as linked list, stack, queue, tree, table, graph     and the operations performed on these data structures.

Student will know how to derive new classes by inheritance and polymorphism.

Student will know different sorting algorithms and be able to analyze their efficiencies.





H. M. Deitel & P. J. Deitel, Visual C# 2005. How to Program. Second Edition.

Pearson Prentice Hall, Upper Saddle River, NJ, 2006.   ISBN #0-13-152523-9




During the term there will be two in-class midterm exams and a final examination. Laboratory assignments will be given in the regularly scheduled laboratory.  Pop-quizzes may be given at anytime in lab or lecture without prior notification. Your grade will be computed from your performance on these components using the following weights:


Midterm Exam 1                                                           15%

(Friday, October 5, 2007, 12:30-2:30pm, C227 & C228)

Midterm Exam 2                                                           15%

(Friday, November 9, 2007, 12:30-2:30pm, C227 & C228)

Final Exam                                                                    20%

(Monday, December 10, 2007, 08:00-10:00am, rooms TBA)

Labs                                                                                40%

Pop-quizzes & lab quizzes                                            10%

PMT                                                                                 0%

(Monday, December 3 and Wednesday, December 5, 2007, during lab hours)

(Make up: Friday, December 7, 2007, 01:00-03:00pm)


There will be mass exams for both the lecture/laboratory sections. If you have another examination conflict with the above times, please contact your instructor right away, but no later than September 18, 2007.

The following grading scale will be used.

A – 90; BA – 85; B – 80; CB – 75; C – 70; DC – 65; D –60.


Missed Exams

If you miss an exam (a Midterm Exam or the Final Exam), the decision as to whether or not it is made up and how it is made up will be made on an individual basis. To be excused there must be significant circumstances beyond the student’s control.  Generally this will require documentation, such as a doctor’s note in the case of an illness.   Normally, if your absence from an exam is excused, you will have to take a make up exam. Contact the instructor asking for a make up exam as soon as it is possible (if possible inform the instructor even before the exam that you will miss).



Students taking this course are required to register for a lab section.  Lab grades are based on student performance on programming assignments and quizzes.  Additionally, the Programming Skills Mastery Test (PMT) is given in lab.

Programming Assignments

Lab assignments will be given on a regularly scheduled basis.  Many of these assignments will need to be worked on outside of the regular scheduled labs.  Each assignment will have a due date/time.  For each day an assignment is late, 5% of the total possible points for the assignment will be deducted.  If an assignment is more than 20 days late, it is no longer worth any points.  Weekends and holidays are all counted when calculating lateness.  No assignments may be submitted after 11:59 PM on the day preceding the last day of the classes, that is, Thursday, December 6.  By this time all work should be complete and submitted.


There will be regular quizzes given in the lab. Additionally, pop-quizzes may be given at anytime in the labs or lectures without prior notification.  If you miss a quiz for any reason, you will receive a 0 on it.


During the last lab session (the week of December 3 - 7) of the semester, students will be given the Programming Skills Mastery Test (PMT).  The test will consist of a short programming problem.  Students must program the solution in an essentially complete and correct form in the allotted time.  This problem must be solved within the allotted time to earn a passing grade in the course.  Students that fail the PMT on their first attempt will be given the second, and last, chance with a different problem.

Special Policies

Producing competent programmers is a primary goal of this course, and therefore a minimum performance in lab is required for students to pass the course.

You must pass the lab with at least 60% of the total possible lab points in order to pass the course regardless of exam scores.

You should strive to complete all assignments.  In order to pass the laboratory, you may have at most two assignments incomplete.  Even if an assignment is so late that the credit would be 0, it can still satisfy the completeness policy if it is completed and submitted.

You must pass the PMT to pass the course.



Use of Electronic Devices

You are expected to stay alert and pay attention to the directions/announcements in the class. Cellphones, PDAs, and other electronic devices should NOT be used during the lecture and should be turned-off. If available, please do bring your laptop to the class. Web-surfing of non-course related material is NOT permitted during the class. You may surf the web only when specifically told to do so. In order to maintain the integrity of the classroom and if I feel it is distracting you or others, I may ask you to turn-off your laptop.


Incomplete Grades

Please note that the incomplete grade - I - is intended for the student who has missed a relatively small portion of work due to circumstances beyond his/her control.  In general, performance on work done must be at a level of C or better in order to qualify for an incomplete.  An I grade will not be given to replace an otherwise low or failing grade in the class. 


Academic Honesty

The following statement has been approved and distributed by the Western Michigan University Faculty Senate: 

You are responsible for making yourself aware of and understanding the policies and procedures in the Undergraduate (pp. 274-276) [Graduate (pp. 25-27)] Catalog that pertain to Academic Honesty. These policies include cheating, fabrication, falsification and forgery, multiple submission, plagiarism, complicity and computer misuse. If there is reason to believe you have been involved in academic dishonesty, you will be referred to the Office of Student Conduct. You will be given the opportunity to review the charge(s). If you believe you are not responsible, you will have the opportunity for a hearing. You should consult with me if you are uncertain about an issue of academic honesty prior to the submission of an assignment or test.


Unless otherwise told, you may not bring aids to exams.  Submission of another person’s work in part or whole is not permitted. Learning can certainly occur with discussion of class material and assignments with other students, and we will be doing considerable collaborative activity, but at all times take care that you don’t represent the work of another as your own. 

If you are copying another’s work in part or whole, either by hand or electronically, you are going too far. 

If two or more people are working so closely together that the outcomes, particularly on significant portions of computer programs, are essentially line-by-line the same in logical structure, they are going too far.

You should not give your completed work to someone else or accept another’s completed work to “review or look at” in either hardcopy or electronic form.  This too easily facilitates copying. 

Easy availability of information, material, source codes, lecture notes etc on the Internet may make it possible to find solutions to your assignments on the Internet or elsewhere. It is okay to refer to those, understand them and use them to enhance your solutions, generate your own ideas etc. However, you must give proper and full credit to original authors of the work, if you include their ideas and/or solutions. Failing to do so is part of academic and professional dishonesty. It will not be tolerated in this class. Do not give in to temptations.

If you are found responsible for violation of academic honesty in the course, you will receive a penalty up to and including an E grade in the class.


Course Topics

Programming Topics

Coding Standards
Declarations vs. definitions; Headers and code;

Compilation Process
Preprocessor; Compilation; Linking

What is a class? Terminology: objects, classes, instances; Examples of classes from modeling; Member functions/methods; Member variables; Access functions (& pass by reference); Constructors and destructors; Scope; Constant objects, functions, arguments; Static members;

Inheritance and Polymorphism
Has-a vs. is-a designs; Subclassing; Access:  public, private, and protected; Abstract base classes; Virtual functions; Late binding

Operator Overloading
Why overload? How overloading works; Operators; Unary and binary operators; Comparison operators;

Stream I/O
Stream classes and objects; Basic operations on streams; Read(), ReadLine(), etc.; Detecting the end of input; Using text file streams


Debugger tools


Program Design Using ADTs
Cohesion and coupling; Abstraction - functional and data; Problem statements and the noun/verb division; Producing a basic design document; Moving from design to code

Recursive functions: fact and fib; Recursive algorithms: binary search; Reversing string; Problem-solving and traversing search spaces

Array Data Structures
Arrays of objects; Arrays of pointers to objects; Dynamic arrays

Linked Lists
Insertion: beginning, middle, end; Deletion: beginning, middle, end; LL as a modeling tool (trains, etc.)

Uses and push/pop; Implementation as a LL; Sample Algorithms: postfix, delimiter match

Uses and enqueue/dequeue; Sample algorithms: palindromes, string to int conversion, simulation

Program Analysis
Analytic vs. experimental methods; Big-O concepts; Basic code analysis: loop structures; Analysis of bubble, insertion, and selection sorts; Analysis of binary search, towers of hanoi, quicksort, and mergesort

Linear and binary search; Bubble, insertion, selection, quick, and merge sorts; Postfix evaluation; Reversing linked lists; Palindrome recognition


Dates of Interest


09/10/07      – Last day to add/drop/change (100% refund)

09/17/07      – Last day to drop a class (50% refund)

11/5/07        Last day to withdraw (no refund, W recorded on the transcript)

11/21/07      – Thanksgiving recess starting at noon; classes resume Nov. 26.

12/10/07      – Final examination week starts.


                                                                                                                          Last updated on  9/14/07 (by L. Lilien)