Transcript Introduction to CS Welcome to CS 5 !
Welcome to CS 5 !
Introduction to CS
an advocate of concrete computing
Of all the classes I took, this was one of them.
When CS 5 was over, I knew it was a good thing.
Ebert and Roeper’s course reviews
Meeting Times and Places
Lab
Required !
M and W: T and Th:
4-5 pm in the Academic Computing (AC) Labs 2:30-3:30 pm AC Labs are in Parsons 146 Chance to work on HW problems & ask questions Alternate using the Macs and the PCs .
Mac: A-J PC: M-Z by last name alternating each week...
Meeting Times and Places
Lab
Required !
Lecture
Strongly encouraged
M and W: T and Th:
4-5 pm in the Academic Computing (AC) Labs 2:30-3:30 pm AC Labs are in Parsons 146 Chance to work on HW problems & ask questions Alternate using the Macs and the PCs .
Mac: A-J PC: M-Z by last name alternating each week...
M and W: T and Th:
2:45-4:00 pm (or so) here in Galileo Pryne 1:15-2:30 pm (or so) here in Galileo Pryne Insight into the HW problems (what, why, how)
Meeting Times and Places
Lab
Required !
Lecture
Strongly encouraged
M and W: T and Th:
4-5 pm in the Academic Computing (AC) Labs 2:30-3:30 pm AC Labs are in Parsons 146 Chance to work on HW problems & ask questions Alternate using the Macs and the PCs .
Mac: A-J PC: M-Z by last name alternating each week...
M and W: T and Th:
2:45-4:00 pm (or so) here in Galileo Pryne 1:15-2:30 pm (or so) here in Galileo Pryne Insight into the HW problems (what, why, how)
Recitation
All are welcome 8:00 - 9:00 am Fridays in Galileo Edwards More insight into the HW problems (
how
)
NO recitation this week -- it’s for Monday’s section only!
Resources
Course Web Page:
http://www.cs.hmc.edu/courses/2004/fall/cs5
all assignments, online text, necessary files, lecture slides are here First week’s assignment: Reading Wk 1 and starting on Hw 2.
Resources
Course Web Page:
http://www.cs.hmc.edu/courses/2004/fall/cs5
all assignments, online text, necessary files, lecture slides are here First week’s assignment: Reading Wk 1 and starting on Hw 2.
Course Mailing List reminders and hints CS 5 vs. spam!
Resources
Course Web Page:
http://www.cs.hmc.edu/courses/2004/fall/cs5
all assignments, online text, necessary files, lecture slides are here First week’s assignment: Reading Wk 1 and starting on Hw 2.
Course Mailing List reminders and hints CS 5 vs. spam!
Old Compiler:
CodeWarrior
Learning Edition 3.0 $35
that smile... ?!
Resources
Course Web Page: http://www.cs.hmc.edu/courses/2004/fall/cs5/ all assignments, online text, necessary files, lecture slides are linked First week’s assignment: Reading Wk 1 and starting on HW 2.
Course Mailing List reminders and hints XCode - Mac Compiler:
JCreator
or
XCode/Proj. Builder
Price: $0 !
With many other advantages, as well...
available from www.cs.hmc.edu/~dodds/cs5 JCreator - PC
Homework
Assignments 4-5 problems (50 points) per week, 20% extra credit Monday’s section Tuesday’s section Wednesday’s section Thursday’s section due Sunday 11:59 pm due Monday 11:59 pm Working on programs: save in your CHARLIE home directory
(H:)
saving on the
C:
drive is OK on
your machine
, of course! Submitting Programs: on line from the course website Working on different machines:
submit
These are all available from the CS 5 website ( and
download
You’ll need the supporting files for each machine you’ll be using
Hw2Pr1.zip
, etc.)
Grading
Grades Based on points percentage ~ 50% Assignments ~ 30% Exams ~ 20% Participation
if (score >= 95%) {grade = “A”;} if (score >= 95%) {grade = “HP”;} if (score >= 60%) {grade = “P”;}
see course syllabus for the full grade list...
Grading
Grades Based on points percentage ~ 50% Assignments ~ 30% Exams ~ 20% Participation Exams
if (score >= 95%) {grade = “A”;} if (score >= 95%) {grade = “HP”;} if (score >= 60%) {grade = “P”;}
see course syllabus for the full grade list...
Midterm #1 Friday, October 8 Midterm #2 Friday, November 12 Final To be announced 50 points each 300 points
if (currentgrade == “A”) { takeexam = false; }
Grading
Grades Based on points percentage ~ 50% Assignments ~ 30% Exams ~ 20% Participation Exams
if (score >= 95%) {grade = “A”;} if (score >= 95%) {grade = “HP”;} if (score >= 60%) {grade = “P”;}
see course syllabus for the full grade list...
Midterm #1 Friday, October 8 Midterm #2 Friday, November 12 Final To be announced 50 points each 300 points
if (currentgrade == “A”) { takeexam = false; }
Already know programming …? Work ahead!
You may submit assignments 5, 10, and 14 instead of an earlier assignment. If you receive at least an 80%, those lab sessions are not required, and you will receive the same grade on the intervening hwks.
but email me if you do this...
Resources
Instructors Zach Dodds Belinda Thom Office: Olin 1265 Olin 1241 Phone: x78990 (909-607-8990) x79662 Email: [email protected] [email protected]
Official Office Hrs: F 9-12 TTh 4:30-6 Real Office Hrs: come by anytime… Graders
/
Tutors
available in the LAC and Parsons computer labs
• during afternoon lab sessions • Saturday and Sunday afternoons • Sunday and Monday evenings • you can also track them down elsewhere... names linked from the webpage Other Students The Honor Code and Computer Science...
Honor Code • You are
encouraged
with other students.
to
discuss
problems • You may verbal solutions with other students (present or past):
not
share written, electronic or
No copying of files except those provided by the course material.
No transcribing of programs from paper, whiteboards, blackboards, or other media. Starting with week 3 (Hw3), you will have the option of working in pairs for one of each week’s problems. (The same guidelines apply for each pair.)
Questions ?
Welcome to CS 5 !
an advocate of concrete computing
Introduction to CS
Of all the classes I took, CS 5 was one of them.
When CS 5 was over, I knew it was a good thing.
Not as poignant as Jason vs. Freddy, but at least as gory!
Ebert and Roeper’s course reviews
Welcome to CS 5 !
an advocate of concrete computing
Computer Psychology
Of all the classes I took, CS 5 was one of them.
When CS 5 was over, I knew it was a good thing.
Not as poignant as Jason vs. Freddy, but at least as gory!
Ebert and Roeper’s course reviews
Goals
class S{public static void main(String[]a){String s= "class S{public static void main(String[]a){String s= ;char c=34;System.out.println(s.substring(0,52)+c+s +c+s.substring(52));}}” ;char c=34;System.out.println(s.substring(0,52)+c+s +c+s.substring(52));}} ouch!
Goals
class S{public static void main(String[]a){String s= "class S{public static void main(String[]a){String s= ;char c=34;System.out.println(s.substring(0,52)+c+s +c+s.substring(52));}}” ;char c=34;System.out.println(s.substring(0,52)+c+s +c+s.substring(52));}} ENIAC, 1945 ouch!
thinking like a machine
Not why...
Java is the programming language of the future Programming will solve problems for you Programming will save time && effort
Not why...
Java is the programming language of the future Programming will solve problems for you Programming will save time && effort 2 ampersands in Java ( && ) means
and
Why ?
Science is about explaining and understanding data. Computer Science provides powerful tools to do this.
simulation http://heat.usc.edu/test/new/HSgas.html
N-body problem analysis How do we represent physical phenomena … ?
How does each object affect others … ?
How many forces do we need to keep track of … ?
Why Java ?
Java is a
general-purpose
Engineering: computer language laser-testing code in LabView Matlab, Electric, E4 Physics: Chemistry: LabView Rasmol, Kaleidograph Math: Biology: Maple, ODE Architect Populus, Lasergene & lots more special-purpose packages sequence-matching in Lasergene
But ...
I can be a physicist, chemist, engineer, biologist, mathematician, high-school teacher, Fear Factor contestant, or CEO of the next Microsoft, ...
without
programming || computer science
But ...
I can be a physicist, chemist, engineer, biologist, mathematician, high-school teacher, Fear Factor contestant, or CEO of the next Microsoft, ...
without
programming || computer science or
But ...
I can be a physicist, chemist, engineer, biologist, mathematician, high-school teacher, Fear Factor contestant, or CEO of the next Microsoft, ...
without
programming || computer science Yes, if you’re 60 Maybe, if you’re 20 But ... intuition about the machines you’ll be using will make you
more effective
at all of the above.
What is programming ?
Programming == recipe-writing
What is programming ?
Programming == recipe-writing is
What is programming ?
Programming == recipe-writing Programming == learning a foreign language
What is programming ?
Programming == recipe-writing Programming == learning a foreign language
Baggage !
What is programming ?
Programming == recipe-writing Programming == learning a foreign language Baggage !
class CS5App { public static void main(String[] args) { System.out.println("Hello World!"); } }
What is programming ?
Programming == recipe-writing Programming == learning a foreign language Baggage !
class CS5App { public static void main(String[] args) { System.out.println("Hello World!"); } }
Syntax:
What is programming ?
Programming == recipe-writing Programming == learning a foreign language Baggage !
class CS5App { {
week 13 week 10 week 5 week 2 week 7 week 2
public static void main(String[] args) System.out.println("Hello World!"); } }
What
is
all of this stuff ?
&& Why is it here ?
go/went
Java baggage #1 -- Punctuation
/* A Hello, World program */ class CS5App { public static void main(String[] args) // start here { System.out.println(" Hello World!
"); } }
Java baggage #1 -- Punctuation
/* A Hello, World program */ class CS5App { public static void main(String[] args) // start here { System.out.println(" Hello World!
"); } }
Punctuation: { curly braces create code blocks } matched
Java baggage #1 -- Punctuation
/* A Hello, World program */ class CS5App { public static void main(String[] args) // start here { System.out.println(" Hello World!
"); } }
Punctuation: matched
.
;
the “dot” indicates containment a semicolon ends a statement unmatched
Java baggage #2 -- Comments
/* A Hello, World program */ class CS5App { public static void main(String[] args) // start here { System.out.println("Hello World!"); } }
Two types of comments:
// rest-of-line comment /* one-or-more-line comment */
Java baggage #3 -- Spacing
/* A Hello, World program */ class CS5App { public static void main(String[] args) // start here { System.out.println("Hello World!"); } }
programs that look identical to Java...
/* A Hello, World program */ class CS5App { public static void main(String[] args){ //starthere System.out.println( "Hello World!") ;}}
Java baggage #3 -- Spacing
/* A Hello, World program */ class CS5App { public static void main(String[] args) // start here { System.out.println("Hello World!"); } }
3. Spacing almost completely
ignored
by silicon almost completely
essential
for carbon
these
1. aligning punctuation 2. commenting 3. adequate spacing are the essential style guidelines
If you don’t space...
riverrunpastEveandAdamfromsw erveofshoretobendofbaybringsusb yacommodiusvicusofrecirculation backtoHowthCastleandEnvirons.
If you don’t space...
riverrunpastEveandAdamfromsw erveofshoretobendofbaybringsusb yacommodiusvicusofrecirculation backtoHowthCastleandEnvirons.
riverrun past Eve and Adam from swerve of shore to bend of bay brings us by a commodius vicus of recirculation back to Howth Castle and Environs.
James Joyce
Java baggage #4 --
main /* A Hello, World program */ class CS5App { public static void main (String[] args) // start here { System.out.println("Harvey"); System.out.print(“Mu"); } } main
is where it all begins...
Java baggage #5 -- Printing
/* A Hello, World program */ class CS5App { public static void main(String[] args) // start here { System.out.println("Harvey"); System.out.print(“Mu"); } }
text output
H.out.println(“dd”); H.out.print(“col”); H.p(“leg”); H.pl(“e”);
Java baggage #5 -- Printing
/* A Hello, World program */ class CS5App { public static void main(String[] args) // start here { System.out.println("Harvey"); System.out.print(“Mu"); } } System.out
H.out
H
are all basically the same.
H.out.println(“dd”); H.out.print(“col”); H.p(“leg”); H.pl(“e”);
Java baggage #5 -- Printing
/* A Hello, World program */ class CS5App { public static void main(String[] args) // start here { System.out.println("Harvey"); System.out.print(“Mu"); } } System.out
H.out
H
are all basically the same.
So, use
H
!
H.out.println(“dd”); H.out.print(“col”); H.p(“leg”); H.pl(“e”);
Java baggage #5 -- Printing
/* A Hello, World program */ class CS5App { public static void main(String[] args) // start here { System.out.println("Harvey"); System.out.print(“Mu"); } }
goes to next line at end stays on same line at end stays on same line at end goes to next line at end
H.out.println(“dd”); H.out.print(“col”); H.p(“leg”); H.pl(“e”); \n
puts a new line anywhere
If Joyce wrote in code...
For example,
H.out.print(“hvm\naeu\nryd”); H.out.println(“whteu\naerae”); H.out.print(“vyrao\noeg”); H.out.println(“dn\nbooe.”);
If Joyce wrote in code...
For example,
H.p(“hvm\naeu\nryd”); H.pl(“whteu\naerae”); H.p(“vyrao\noeg”); H.pl(“dn\nbooe.”);
Language is language
PLEASE DO ,1 <- #13 DO ,1 SUB #1 <- #238 DO ,1 SUB #2 <- #112 DO ,1 SUB #3 <- #112 DO ,1 SUB #4 <- #0 DO ,1 SUB #5 <- #64 DO ,1 SUB #6 <- #238 DO ,1 SUB #7 <- #26 DO ,1 SUB #8 <- #248 DO ,1 SUB #9 <- #168 DO ,1 SUB #10 <- #24 DO ,1 SUB #11 <- #16 DO ,1 SUB #12 <- #158 DO ,1 SUB #13 <- #52 PLEASE READ OUT ,1 PLEASE GIVE UP
Intercal
,: ^_25*,@ v >v"Hello world!"0<
Befunge LISP/Scheme
(DEFUN HELLO-WORLD () (PRINT (LIST 'HELLO 'WORLD))) #include
C++
print "Hello, World!";
Perl
Language is language ?
Perls of wisdom ?
eval evalq.q>trd!Uj:%L<061:%C odv),idhfiu
sddo5(:S)1(:%b,?sdqd`u)%I-]'t(:%t,?choe)&=Envo?&
z%b,?bsd`udUdyu)%L-9,udyu^chr($$/$$)x2016. $;=$_;$/='0#](.+,a()$=(\}$+_c2$sdl[h*du,(1ri)b$2](n}/1)1tfz),}0( o{=4s)1rs(2u;2(u",bw2b$hc7s"tlio,tx[{ls9r11$e(1(9]q($,$2)=)_5{4* s{[9$,lh$2,_.(ia]7[11f=*2308t$$)]4,;d/{}83f,)s,65o@*ui),rt$bn;5( =_stf*0l[t(o$.o$rsrt.c!(i([$a]$n$2ql/d(l])t2,$.+{i)$_.$zm+n[6t(e 1+26[$;)+]61_l*,*)],(41${/@20)/z1_0+=)(2,,4c*2)\5,h$4;$91r_,pa,) $[4r)$=_$6i}tc}!,n}[h$]$t0rd)_$';open(eval$/);$_=<0>;for($x=2;$x <666;$a.=++$x){s}{{.|.}};push@@,$&;$x==5?$z=$a:++$}}for(++$/..su bstr($a,1885)){$p+=7;$;.=$@[$p%substr($a,$!,3)+11]}eval$; back to Java Representation Naming things int double String boolean true false float short long char byte void Information Flow Making decisions if else switch case for while do return break Using/Building Structures [ ] new Abstraction ! class private public static super Weeks 2-6 functions, methods, variables Weeks 3-4 conditionals, loops Weeks 1-14 arrays, classes, design Artists are mystics rather than rationalists. They leap to conclusions that logic cannot reach. -- Sol LeWitt, conceptual artist Simplicity does not precede complexity, but follows it. -- Alan Perlis, creator of the first compiler class CS5App { public static void main (String[] args) { GrCanvas art = G.createCanvas(); // the window (canvas) art.add(new GrRectangle(1,3,6,4,Color.red)); // what ?? } } 10 x 10 grid art.add(GrRectangle(1,3,6,2,Color.red)); 10 x 10 grid art.add(GrRectangle(1,3,6,2,Color.red)); 10 x 10 grid art.add(GrRectangle(1,3,6,2,Color.red)); art.add(GrRectangle( )); art.add(GrRectangle( )); Create the following “work”: art.add(new GrRectangle(…)); art.add(new GrRectangle(…)); art.add(new GrRectangle(…)); art.add(new GrRectangle(…)); … Information • Representing it -- what’s convenient and available ? • Applying it -- graphics, robotics, vision, AI • Measuring it -- what’s possible and what’s not How many drawing commands are really necessary ? Information • Representing it -- what’s convenient and available ? • Applying it -- graphics, robotics, vision, AI • Measuring it -- what’s possible and what’s not How many drawing commands are really necessary ? 23 kb file 31 kb file – Richard Hamming – thanks to Steven Pinker Mac: A-J PC: M-Z Work on the problems of Homework 2 : Hw2Pr1) The “Hello, World!” program Hw2Pr2) Abstract(ion) Art Hw2Pr3) A printing puzzle... Hw2Pr4) Artificial Intelligence (Today) (Next week) (or submit hw5...) Please complete your CS 5 “quiz” & take a photo… • Not an HMC student ? See me for an HMC account + building access • Name • Birthdate • A place you consider home • Your favorite _________ is _________. • Your least favorite ________ is _________. • Email and School (if not an HMC student) Be sure to have a photo taken ! • Name Zach Dodds • Birthdate 01/21/1969 • A place you consider home Pittsburgh, PA • Email and School (if not an HMC student) [email protected] • How do I submit things ? • Does CodeWarrior run from student rooms ? • Can I work on Assignment 5 now ? • What’s the best thing to work on in lab ? Instructors Zach Dodds Office: Olin 1265 Phone: x78990 (909-607-8990) Email: [email protected] Official Office Hours: F 9-12 Real Office Hours: Any time or by email... Graders Tutors available in the LAC and Parsons computer labs • during afternoon lab sessions • Saturday and Sunday afternoons • Sunday and Monday evenings • you can also track them down elsewhere... names linked from the webpage Other Students The Honor Code and Computer Science... • The submission system won’t be up until September 10th... • CodeWarrior doesn’t work from student rooms right now - likely it will be available only from labs for the term! (of course if you have your own copy, it will work) • Assignments 1, 2, and 3 are ready. 4 and 5 will be by 9/12. • Make a CS 5 folder in your KATO home directory. Save everything there! Stuff saved elsewhere will be lost! Lab Required ! 2:15 - 3:15 in the Academic Computing (AC) Labs Chance to work on HW problems & ask questions Alternate Mac/PCs . This week Mac: A-M PC: N-Z Kato password w/ more than 8 letters?? -- Change it on the PC! Lecture Strongly encouraged 1:15 - 2:15 (or so) here in Galileo Pryne Insight into the HW problems (what, why, how) Recitation All are welcome 8:00 - 9:00 Fridays in Galileo Macalister More insight into the HW problems ( how ) do NOT come this week -- it’s for Monday’s section only! Assignments 4-5 problems (50 points) per week, 20% extra credit Monday’s section Tuesday’s section Wednesday’s section Thursday’s section due Sunday 11:59 pm due Monday 11:59 pm Grading 8 points for correctness 8 points if it completely works 6 points if it almost completely works 3 points if it mostly works 0 points if it doesn’t mostly work 2 points for commenting and formatting 0 points if the code does not compile! Assignments 4-5 problems (50 points) per week, 20% extra credit Monday’s section Tuesday’s section Wednesday’s section Thursday’s section due Sunday 11:59 pm due Monday 11:59 pm If a listener nods his head when you're explaining your program, wake him up. A program without a loop and a structured variable isn't worth writing. Simplicity does not precede complexity, but follows it. The goal of computation is the emulation of our synthetic abilities, not the understanding of our analytic ones. A year spent in artificial intelligence is enough to make one believe in God. You think you know when you can learn, are more sure when you can write, even more when you can teach, but certain when you can program. A programming language is low level when its programs require attention to the irrelevant. An Education Is What Remains When We Forget Everything We've Learned An education is what remains when you’ve forgotten everything you've learned familiar and sometimes not so familiar… deceptively easy There’s baggage to get used to. Java programming -- writing a recipe programming -- learning a foreign language scare you w/Hello, world in other languages… really no scarier than being raised to learn Finnish or whatever syntax hello, world static, public… /* A Hello, World program */ class CS5App { public static void main(String[] args) // start here { H.out.println("Hello World!\nHow are you?"); H.in.nextLine(); } } 6. Input H.in.nextLine(); worthwhile? IS is about • explaining and understanding data • leveraging technologies economically • promoting relationships with people Computer Science provides a set of tools to help. simulation filtering communication analysis N-body problem How difficult is this? Weeks 2-3 Naming things Java gender -- example from book flavor (up,down,charm,strange,top,bottom) Type: integer value ( int ), sequence of characters ( String ), double-precision value ( double ), ... Representation Naming actions Information Flow mood -- Go! But if she were to go… There he goes. transitive/intransitive H.out.println(); H.in.nextLine(); Weeks 3-5 Java Big Idea: information flow Name things Name actions Make decisions And more of the same… intelligent?! no if…then puzzle room draw! loop = pattern complexity reducing enough to build an intelligent agent?! building structures out of raw actions any skilled trade building structures out of raw data any skilled trade building structures out of both actions and data it can take care of itself! key: building things = abstraction … why? Week 5 Weeks 6-9 Weeks 10-14 T he science of information transistors & electrons, quantum gates and particle superpositions, recombinant molecules, analog computing • representing it -- what’s convenient for the electrons? • changing its form -- what’s convenient for us? programming algorithms, complexity • applying it -- AI, graphics, robotics, ... computability • measuring it -- complexity -- what’s possible? algorithms -- minimal number of drawing commands computer science is fundamentally a referential subject... recognition that you don’t really need to know all the details, you just need to know where to get them and how to use them from there Get into a rut early -- do the same process the same way. Accumulate idioms and standardize! It is Shakepeare’s idiom list, not his vocabulary, that distinguishes him. – Alan Perlis riverrunpastEveandAdamfromsw erveofshoretobendofbaybringsusb yacommodiusvicusofrecirculation backtoHowthCastleandEnvirons. riverrunpastEveandAdamfromsw erveofshoretobendofbaybringsusb yacommodiusvicusofrecirculation backtoHowthCastleandEnvirons. riverrun past Eve and Adam from swerve of shore to bend of bay brings us by a commodius vicus of recirculation back to Howth Castle and Environs. James Joyce How does a machine think ? How does a machine think ? Algorithms Programming Language How many problems am I facing ? p = 5*12; Machine Instructions load p 5 mult p 12 layers of abstraction Movement of electrons Shockley’s first transistor its great great-… grand child How does a machine think ? Algorithms our tasks How many problems am I facing ? Programming Language p = 5*12; Machine Instructions computer’s tasks layers of abstraction Movement of electrons Shockley’s first transistor load p 5 mult p 12 Java its great great-… grand child How does a machine think ? Algorithms Machine Instructions our tasks Programming Language computer’s tasks layers of abstraction Movement of electrons Shockley’s first transistor How many problems am I facing ? program p = 5*12; Java compile load p 5 mult p 12 run its great great-… grand child 10 x 10 grid mygrid.drawRect(1,2,3,4,Color.magenta); Create the following “work”: g.addRect( … ); g.addRect( … ); g.addRect( … ); g.addRect( … ); … Science is about explaining and understanding data. Computer Science provides powerful tools to do this. simulation http://www.kingsu.ab.ca/~brian/proj/nbod2.html analysis How do we represent physical phenomena … ? How does each object affect others … ? How many forces do we need to keep track of … ? N-body problem /* A Hello, World program */ class CS5App { public static void main(String[] args) // start here { System.out.print("Hello World!"); System.out.println("How are you?"); } } HMCSupport.out.println(“harvey”); HMCSupport.out.print(“mu”); System HMCSupport H are all basically the same. H.out.println(“dd”); H.out.print(“college”); H.p(“leg”); H.pl(“e”); /* A Hello, World program */ class CS5App { public static void main(String[] args) // start here { System.out.print("Hello World!"); System.out.println("How are you?"); } } HMCSupport.out.println(“harvey”); HMCSupport.out.print(“mu”); System HMCSupport H are all basically the same. So, use H ! H.out.println(“dd”); H.out.print(“college”); H.p(“leg”); H.pl(“e”); /* A Hello, World program */ class CS5App { public static void main(String[] args) // start here { H.p("Hello World!"); H.pl("How are you?"); } } goes to next line at end stays on same line at end goes to next line at end stays on same line at end H.pl(“harvey”); H.p(“mu”); H.pl(“dd”); H.p(“college”); \n puts a new line anywhereThe Plan
Abstraction
Abstract(ion) Art
Abstract Art
Abstract Art
Abstract Art
Assignment 2, Problem 2
Computer Science
Computer Science
In a nutshell...
The purpose of computing is insight, not numbers.
Programming is deceptively easy.
Lab Today
“Quiz”
“Quiz”
Questions ?
Questions ?
Resources
/
CS 5 developments
Class Meetings
Homework
Homework
Alan Perlis
Language is language
Java’s baggage
CGU slides
Why ?
Name calling
Decisions, decisions
The Key
Computer Science
Abstract(ion) Art
Expert Advice
If you don’t space...
If you don’t space...
Silicon Dreams
Silicon Dreams
Silicon Dreams
Silicon Dreams
Abstract Art
Assignment 2, Problem 4
Why ?
Java baggage #5 -- Printing
Java baggage #5 -- Printing
Java baggage #5 -- Printing