CSBridge Darafaka Lisesi. 2014 Boazii nv. 2015 Ko nv. 2016 Ko - - PowerPoint PPT Presentation

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CSBridge Darafaka Lisesi. 2014 Boazii nv. 2015 Ko nv. 2016 Ko - - PowerPoint PPT Presentation

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CSBridge Darafaka Lisesi. 2014 Boazii nv. 2015 Ko nv. 2016 Ko nv. 2017 CTU, Czech Republic + Ko nv. 2018 Bryce Julia Asena Nick Chris Ou Our awesome 2019 2019 Ko Ko te teaching te team! Bar Pelin

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CSBridge

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Boğaziçi Ünv. 2015 Darüşşafaka

  • Lisesi. 2014

Koç Ünv. 2016 Koç Ünv. 2017 CTU, Czech Republic + Koç Ünv. 2018

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Asena Bryce Julia Nick Chris

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Ou Our awesome 2019 2019 Ko Koç te teaching te team!

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Pelin Barış

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Logistics

LOL: Lots of Labs!

Labrador Retrievers (Labs)

(computer)

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Logistics

Discussion Section

Meet your friends and talk through problems with your Section Leader!

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Stanford?

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Stanford

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Prerequisites

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http://koc.csbridge.org Course Website

*note that its or

  • rg, not co

com

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Very High Level Journey

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Breakout

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What if I fall behind?

CS Bridge

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Share Ideas Not Code

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Questions?

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Our First Step

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Karel

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s

Karel Speaks Java

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+ + + + + + + + + + + + + + + 1 2 3 1 2 3 4 5

North South West East

Karel’s World

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+ + + + + + + + + + + + 1 2 3 1 2 3 4

Walls

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Beepers

+ + + + + + + + + + + + 1 2 3 1 2 3 4

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Knows Four Commands move(); turnLeft(); pickBeeper(); putBeeper();

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move();

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move();

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move();

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turnLeft();

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turnLeft();

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turnLeft();

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pickBeeper();

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pickBeeper();

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pickBeeper();

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putBeeper();

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putBeeper();

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putBeeper();

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Questions?

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+ + + + + + + + + + + + 1 2 3 1 2 3 4

First Challenge

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First Challenge

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First Challenge

move(); turnLeft(); pickBeeper(); putBeeper();

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Need a Volunteer

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First Challenge

move(); turnLeft(); pickBeeper(); putBeeper();

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Let’s Try It

StepUp.java

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Questions?

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import stanford.karel.*; public class StepUp extends Karel { public void run() { move(); pickBeeper(); turnLeft(); move(); turnLeft(); turnLeft(); turnLeft(); move(); putBeeper(); move(); } }

Improving our Program

It’s “Turn Right”, but… 🙂 not very clear 😪 tedious

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import stanford.karel.*; public class StepUp extends Karel { public void run() { move(); pickBeeper(); turnLeft(); move(); // turns Karel right turnLeft(); turnLeft(); turnLeft(); move(); putBeeper(); move(); } }

Improving our Program

It’s “Turn Right”, but… descriptive comments 😪 tedious

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import stanford.karel.*; public class StepUp extends Karel { public void run() { move(); pickBeeper(); turnLeft(); move(); // turns Karel right turnLeft(); turnLeft(); turnLeft(); move(); putBeeper(); move(); } }

Anatomy of a Program

This is the program's so sour urce e code de

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import stanford.karel.*; public class StepUp extends Karel { public void run() { move(); pickBeeper(); turnLeft(); move(); // turns Karel right turnLeft(); turnLeft(); turnLeft(); move(); putBeeper(); move(); } }

Anatomy of a Program

This piece of the program’s so sour urce e code de is called a me method.

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import stanford.karel.*; public class StepUp extends Karel { public void run() { move(); pickBeeper(); turnLeft(); move(); // turns Karel right turnLeft(); turnLeft(); turnLeft(); move(); putBeeper(); move(); } }

Anatomy of a Program

This word is the nam name of

  • ur me

method (here, run)

We must always have a run() method to run our program. But we can make an any

  • th
  • ther

er m meth thod

  • ds w

s we w e want!

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Method Definition

private void name() { statements in the method body }

T h i s a d d s a n e w c

  • m

m a n d t

  • K

a r e l ’ s v

  • c

a b u l a r y

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import stanford.karel.*; public class StepUp extends Karel { public void run() { move(); pickBeeper(); turnLeft(); move(); turnRight(); move(); putBeeper(); move(); } private void turnRight() { turnLeft(); turnLeft(); turnLeft(); } }

Improving our Program

Define a turnRight me method Ca Call our turnRight me method

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import stanford.karel.*; public class StepUp extends Karel { public void run() { move(); pickBeeper(); turnLeft(); move(); turnRight(); move(); putBeeper(); move(); } private void turnRight() { turnLeft(); turnLeft(); turnLeft(); } }

Anatomy of a Program

This is called an im import statement. It tells Java what Karel is.

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import stanford.karel.*; public class StepUp extends Karel { public void run() { move(); pickBeeper(); turnLeft(); move(); turnRight(); move(); putBeeper(); move(); } private void turnRight() { turnLeft(); turnLeft(); turnLeft(); } }

Anatomy of a Program

This is called a co code block.

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import stanford.karel.*; public class StepUp extends Karel { public void run() { move(); pickBeeper(); turnLeft(); move(); turnRight(); move(); putBeeper(); move(); } private void turnRight() { turnLeft(); turnLeft(); turnLeft(); } }

Program Style

These are terrifying!

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import stanford.karel.*; public class StepUp extends Karel { public void run() { move(); pickBeeper(); turnLeft(); move(); turnRight(); move(); putBeeper(); move(); } private void turnRight() { turnLeft(); turnLeft(); turnLeft(); } }

Program Style

St Style Ti Tip #1: Align braces in your code blocks.

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import stanford.karel.*; public class StepUp extends Karel { public void run() { move(); pickBeeper(); turnLeft(); move(); turnRight(); move(); putBeeper(); move(); } private void turnRight() { turnLeft(); turnLeft(); turnLeft(); } }

Program Style

St Style Ti Tip #1: Align braces in your code blocks.

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import stanford.karel.*; public class StepUp extends Karel { public void run() { move(); pickBeeper(); turnLeft(); move(); turnRight(); move(); putBeeper(); move(); } private void turnRight() { turnLeft(); turnLeft(); turnLeft(); } }

Program Style

St Style Ti Tip #1: Align braces in your code blocks.

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import stanford.karel.*; public class StepUp extends Karel { public void run() { move(); pickBeeper(); turnLeft(); move(); turnRight(); move(); putBeeper(); move(); } private void turnRight() { turnLeft(); turnLeft(); turnLeft(); } }

Program Style

St Style Ti Tip #2: Align indentation in your code blocks.

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import stanford.karel.*; public class StepUp extends Karel { public void run() { move(); pickBeeper(); turnLeft(); move(); turnRight(); move(); putBeeper(); move(); } private void turnRight() { turnLeft(); turnLeft(); turnLeft(); } }

Program Style

St Style Ti Tip #2: Align indentation in your code blocks.

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Questions?

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Place 100 beeper?

Place100.java

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For Loop

for(int i = 0; i < N; i++) { // to repeat N times }

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for(int i = 0; i < N; i++) { // to repeat N times }

Helper me metho thods ds for defining new commands

private void name() { statements in the method body }

fo for loops repeat code N times

Review N

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Today’s Examples on the Website

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Today’s Slides on the Website

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Your turn

x 200

(in Labs)

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Newspaper Karel

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Your turn

To the Labs!!

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Build Efes