© Peter Andreae Introduction to Computer Program Design COMP T1. Peter Andreae ( “Pondy” ) Computer Science Victoria University of Wellington

© Peter Andreae COMP 102 1:2 COMP 102 Menu: What is COMP102 about? Where does COMP102 fit in your degree? Course organisation What to do NOW! Admin: Handouts: Course Outline Lab Assignment 1 Switching to COMP112: see me after the lecture, outside lecture room

© Peter Andreae COMP 102 1:3 Computing is everywhere Computer based systems are everywhere user application programs – browsers, photo editors, chat programs social media and mobile phone apps,… computer games Information systems in commerce and business specialised applications – analysing gene data, X-rays, simulations controllers for device – cars, washing machines, TVs, DVD player, etc operating systems that run computers, cell phones, etc. network communication: internet connections, phone exchanges, fibre optics, cell phone systems, etc …. ⇒ Computing underlies almost all aspects of modern life

© Peter Andreae Computer Science Computer Science is the science of Computing The study of the computing processes that happen inside computers when they are working. How do we design, build, analyse systems that deal with information: text numbers graphics and video sound sensor and control signals …. COMP 102 1:4

© Peter Andreae Computer Science Questions How do you…. design a computer system to manage an organisation’s information? design an intelligent assistant for your phone that can talk with you? enable social interaction over communication networks send data securely and reliably over unreliable public networks? manage large teams of programmers building insanely complicated programs (not the way Novopay did!) design algorithms that will create new visual effects for movies design a database so that it is impossible to enter inconsistent data? design programming languages to make programming easier ensure that the computer program controlling a nuclear reactor or a spacecraft never makes a mistake? design a self-driving car that drives safely on city roads? make a safe encryption scheme for electronic commerce? determine whether some computation is tractable or even possible? COMP 102 1:5

© Peter Andreae CS What is COMP 102? A first course in Computer Science Software Engineering Network Engineering A required course for Electronic and Computer Engineering Operations Research An important course for Information Systems Media Design A useful course for Everyone COMP 102 1:6 OR IS NW ECE SE MD CS

© Peter Andreae COMP102 not a Computer Science overview Why not? To understand the issues and principles of Computer Science, we need to understand and be able talk about computation. Programming is about specifying the computation that a computer should do We need to be able to write, understand, think about, and analyse programs to address the issues of Computer Science Programming is fundamental to the engineering side of Computer Science. COMP 102 1:7

© Peter Andreae What is COMP 102 about COMP 102 is about learning the language and the ways of thinking required for Computer Science, Software Engineering, Network Engineering etc. Programming is about designing new programs, applications, systems by writing the instructions to make a computer behave in the way we want it to. In COMP102, you will design and write lots of little programs for a wide variety of tasks. Gives you a new set of mental tools for addressing problems Different way of thinking from most disciplines Very precise, coping with abstraction and complexity, creative. COMP 102 1:8

© Peter Andreae COMP 102 1:9 Goals of COMP102 By the end of COMP102 you will be able to understand, design, and construct small computer programs (in Java). ⇒ be able to use computers to solve new problems ⇒ be able to think in a new way about problems Note: We don’t assume you have done any programming. COMP102 starts from the beginning (more on this in a moment) Example programs: Bouncing ball simulator diagram editor photo manipulator little game

© Peter Andreae COMP 102 1:10 What does COMP102 cover? Focus of the course: Object Oriented programming and design. Programming with the Java programming language. Java is a widely used programming language Clean enough for learning to program Useful for real programming Strong enough for very large programs Practical programming, writing small programs. Testing and debugging. Principles of good design.

© Peter Andreae COMP 102 1:11 Is COMP102 For You? Required course for Computer Science, Engineering Useful course for anyone who wants to be able to program. Not about using computers and applications software. Not an “easy credits” course for most people Involves higher level thinking skills than many students expect Key factors for success are logical/abstract thinking, being able to think about your own thinking processes problem solving, not memory attention to detail not getting behind Takes time! plan on around 10 hours / week Practical work is critical

© Peter Andreae Should you take COMP112 instead? COMP112: alternative to COMP102 for BE or BSc(COMP) Both courses let you proceed to COMP103 COMP 112 assumes programming experience: variables, loops, conditionals (ifs) input and output writing functions/procedures/methods with parameters lists or arrays little bit of event driven input, object oriented design doesn’t care what language you used COMP112 gives more breadth of coverage of COMP Sci also involves more complex programming problems COMP 102 1:12 COMP 102 COMP 112 COMP 103 No programming experience Programming experience eg level 3 NCEA DT programming standards

© Peter Andreae Switching to COMP 112 If you have the programming experience check out what we expect at Come along to the COMP112 lectures: 2pm Mon Wed Fri (HU LT323) Check out the first assignment in COMP112 See me after a lecture to get switched over Within the first two weeks COMP 102 1:13

© Peter Andreae COMP 102 1:14 COMP 102 Background We assume you have used a computer We do NOT assume you have done any programming But some students have! good – it is definitely helpful if you have done lots of programming, take COMP112 We try to meet the needs of the full range of students Variety of different help and support available Assignments have graduated components. If you are repeating the course: Do the whole of the assignments, without looking at previous solutions The course will be similar, but there will be changes.

© Peter Andreae COMP 102 1:15 Planning Ahead If you are doing BE, or BSc (COMP), or BDI minor in COMP then you should plan on taking COMP103 in Tri 2. If you are doing BSc (COMP) or BE (SWEN) Plan on doing MATH161 in Tri 2. Required for entry to two 2 nd year courses (COMP261, SWEN224) and for many 3 rd year courses. Consider taking ENGR 110 in Tri 2 Required for entry to one 2 nd year course (SWEN223) You don’t need to change enrolment until 2 nd year. You can’t do COMP102 and COMP112 at the same time! You need a B- or better in COMP 102 to get in to COMP 103

© Peter Andreae COMP 102 1:16 Planning Ahead If you want to do computer graphics BSc in Comp Sci with focus in computer graphics Masters/Hons programme in computer graphics BDI with focus in computer graphics You will need to take COMP102 and 103 MATH 151 (or ENGR 121) and MATH 161 DSDN 101 and DSDN 142

© Peter Andreae COMP 102 1:17 Course Organisation All the details are in the course outline: handout on the course web page: Lectures Present new ideas, techniques, examples. Mon, Wed, Fri KK LT303 (plan to video record) Approx 32 lectures Other 4 lecture slots used for reviews, extension material, etc. Optional Tutorial/Review Session Tue 4-5, AM104, Starts third week. 1 st year help sessions: Mon, Wed 5-7, AM103

© Peter Andreae COMP 102 1:18 Course Web Site An essential resource for the course: (also accessible via link on BlackBoard) Course information, announcements, handouts, videos Lab Assignment details (times, dates, handouts, files,...) Forum, for questions and discussion Info about doing work at home. Java documentation Other useful links Primary administrative communication channel.

© Peter Andreae COMP 102 1:19 People Organiser/Lecturer (Academic/content issues) Peter Andreae – “Pondy”Office: CO 336 or Senior Tutor (Administrative issues, esp labs) Zarinah AminOffice: CO 343 Tutors (Help in labs or via online help system) Range of Undergraduates and Graduates Technical Staff (Reporting problems with the computers) School Office (Forgotten passwords) CO 358

© Peter Andreae COMP 102 1:20 Lab assignments Ten lab assignments (roughly weekly), hand out:Wednesday due:10am Wednesday (a week later) (except #4 & #10) Apply material from lectures and text book to practical programming problems. This is where your learning happens! Done partly in scheduled lab sessions Further work required: expect 5 hours outside labs any of the ECS labs, VS 3.19 (design school) on your home computer

© Peter Andreae COMP 102 1:21 Scheduled Labs Two 1hr labs, in CO 219/238 Lab A: on Wed 1-2, 2-3, 3-4, 4-5, Thu 10-11,11-12 Lab B: on Mon 10-11, 1-2, 2-3, 3-4, 4-5, 5-6 Make-up lab: ?? TBA Tutors present to help. Start THIS week (from Wednesday) First assignment is short, and should not require additional work outside the lab sessions. Sign up online choose ONE Lab A and ONE Lab B (CO219 or CO238 ? doesn’t matter)

© Peter Andreae Design Students Given preference for lab streams on Mon 1-2 and Wed 1-2 lets you stay up at Kelburn after the lecture, before going down to Te Aro. Need to be in Stream A for both DSDN111 and 101 Need to leave tutorial early to come up here for the lecture. given preference for third tutorial time for DSDN171 Wed 2:30-3:30, so can attend COMP102 lab 1-2pm I have restricted the size of the Mon & Wed 1-2 labs. If you are design student you are automatically allowed in those labs without signing up. You can choose another lab if you want. COMP 102 1:22

© Peter Andreae COMP 102 1:23 Course Organisation Help Desk Online help: Forum for general questions; /web form for questions about your code. Help Desk: Tutors available at various times: TBA (12-1?) Study groups We will facilitate organising study groups and tutored help sessions Excellent way of helping your learning Science and Engineering Faculty Awhina programme: support for Maori and Pacific Nations students Women students support group??.

© Peter Andreae COMP 102 1:24 Text Book and Handouts Text Book Java Foundations Lewis, DePasquale, Chase Same as for COMP103. [also OK: Java Software Solutions (6th ed) Lewis and Loftus] We consider it an important resource. The lectures complement the text, not replace it. Lectures will not cover all the details you need! But nor will the textbook! Handouts Course outline, Lecture slides, Assignments Handed out in class. On COMP102 web page.

© Peter Andreae COMP 102 1:25 Tests and Exams Terms Test 1: 15% Tuesday 31 March 6-7 pm NOT in lecture time! Terms Test 2: 15% Monday 11 May 6-7 pm NOT in lecture time! Exam: 50% Date tba (between 12 June and 3 July)

© Peter Andreae COMP 102 1:26 Assessment Read the Course Outline!!! Mandatory Course Requirement: Submit reasonable attempts for at least 7 of assignments 2 to 10. Final Grade: Lab assignments: 20% (labs 2 -10) Terms Test 1:15%(mark boosted to exam mark, if better) Terms Test 2: 15% (mark boosted to exam mark, if better) Exam: 50% To pass the course, you must: Satisfy the Mandatory Requirement. Get overall grade of C- or better. Need B- or better to get into COMP103

© Peter Andreae Withdrawal dates Early withdrawal with refund: up do Fri 13 March no consequences to early withdrawal Standard withdrawal without refund: up to Friday 15 May Withdrawal recorded No grade recorded on transcript BUT, withdrawal counts as a fail for determining "Satisfactory Academic Progress" Late withdrawal with Dean's permission: after 15 May Requires permission of Associate Dean Normally given only when special circumstances arise after 15 May. COMP 102 1:27

© Peter Andreae COMP 102 1:28 Plagiarism (Cheating) You must not present anybody else’s work as if it were your own work: Basic principle of academic honesty. applies to work by other students, friends, relatives, the web, books… If you received substantial help, then you must state who helped and how much. If you declare any work from someone else, then it isn’t plagiarism!!! In COMP102: We encourage you to work in pairs on the core & completion parts of assignments BUT You must put a comment at the top of your code saying that you worked with …. If you use code from the assigned text book, or from the lectures, then you do not need to declare it; If you use any other code that wasn’t yours, then declare it!

© Peter Andreae COMP 102 1:29 Cheating in the assignments. Assignments are primarily for learning, not assessing Cheating in the assignments is not worth it! You won't learn, so you will probably fail. If caught, you'll lose marks --- or worse. Assignments have a fairly small contribution to your grade.

© Peter Andreae COMP 102 1:30 Lab Facilities All scheduled labs are in CO219/238 Can also use other ECS labs (or one of the labs at VS) Can also use home computers. Lab Hours: 24/7 Need ID card to access in evenings and weekends The labs are for getting work done Don’t prevent other people from working If you want to play around, go somewhere else Read the lab rules!

© Peter Andreae COMP 102 1:31 Where to go for Help Depends on the kind of help needed Lecturers, Senior Tutor, tutors Forum On-line help system Help desk (CO 242b) ECS School Office: Student Services: Science/Engineering/Arch&Des Awhina programme The Web

© Peter Andreae COMP 102 1:32 What to do NOW! Sign up for the labs Note: You need to be registered for the course (a) to sign up for a lab (b) to be able to use the school computers Read the course outline. Get Text Book (Book Shop). Read Chapter 1. Read Assignment 1 before your lab session. Read the course outline. Yes, again!