introduction to computer science with python

... is Computer Science? You might be surprised to learn that computer science is not the study of computers A famous computer scientist named Edsgar Dijkstra once quipped that computers are to computer ... computers are to computer science what telescopes are to astronomy The computer is an important tool in computer science, but it is not itself the object of study Since a computer can carry out ... turned a couple computer programming classes into a lucrative career option Computers are so commonplace in the business world today that the ability to understand and program computers might

Ngày tải lên: 25/03/2017, 17:07

... Chapter Classes and Methods III: Static Methods and Variables Lecture Slides to Accompany An Introduction to Computer Science Using Java (2nd Edition) by S.N Kamin, D Mickunas, E Reingold     Chapter ... sent to objects • Objects respond to messages that are in their protocols or interfaces     Objects • Encapsulate data values within a single entity • Their behavior is often general enough to ... is stored on the system heap • A client is program that uses an object         Client Rights • To declare variables of the class type • To create instances of the class using constructors • To

Ngày tải lên: 11/01/2020, 18:40

... Chapter Iteration Lecture Slides to Accompany An Introduction to Computer Science Using Java (2nd Edition) by S.N Kamin, D Mickunas, E Reingold     Chapter ... do-while statements • demonstrate the use of loop invariants to verify the correctness of loops • show the use of loops in data entry and computer animation     while Loop • Repeated executes body

Ngày tải lên: 11/01/2020, 18:43

... Lecture Slides to Accompany An Introduction to Computer Science Using Java (2nd Edition) by S.N Kamin, D Mickunas, E Reingold     Chapter Preview In this chapter we will: • show how to organize ... provided to programmers along with the Java compiler (e.g Math or MouseEvent) – Java expects to find these classes in separate directories or folders • The classes stored in each directory form ... java.lang.Math.sqrt(3); • Using an import statement // to allow unqualified references to // all package classes import package.name.*; // to allow unqualified references to // a particular package class import

Ngày tải lên: 11/01/2020, 18:45

... Chapter 14 Recursion Lecture Slides to Accompany An Introduction to Computer Science Using Java (2nd Edition) by S.N Kamin, D Mickunas, , E Reingold Chapter ... technique is to divide a problem into smaller subproblems • These subproblems may also be divided into smaller subproblems • When the subproblems are small enough to solve directly the process stops ... chapter we will: • introduce recursion as a programming technique • show how recursion can be used to simplify the design of complex algorithms • present several well known recursive algorithms (e.g

Ngày tải lên: 11/01/2020, 18:46

... can respond to mouse events (e.g clicks and mouse movements) demonstrate how to implement a listener Interface show how mouse events can be used to build Trang 3 Abstract Windowing Toolkit (AWT) ... this chapter is labeled optional, itis not possible to be a complete Java Trang 4 Java Events Events are occurrences outside of the program to which the program must respond (e.g user key press) ... Event managers are methods that first catch the event Listener classes send messages to an event manager requesting to be notified when a particular message occurs Trang 5 Creating Mouse Click Listeners

Ngày tải lên: 11/01/2020, 18:47

... Chapter Classes and Methods II Lecture Slides to Accompany An Introduction to Computer Science Using Java (2nd Edition) by S.N Kamin, D Mickunas, E Reingold     Chapter ... use of instance variables to facilitate method communication • demonstrate the use of classes to improve program structure     Building Classes with Multiple Methods • Computer programs can be ... initialized to default values if no initializers are found – integers and doubles are initialized to – characters are initialized to the null character (ASCII code 0) – booleans are initialized to false

Ngày tải lên: 11/01/2020, 19:00

... { Button buttonname; public classname() { buttonname = new Button(“button label”); add(buttonname); but tonname ActionListener (this): } public void actionPerformed(ActionEvent e) { what to do ... Trang 10 Frame Inheritance Example public class TwoButtons extends Frame { Button redButton, blueButton; public TwoButttons() { super(“Two Buttons Frame”); Trang 11 Other Simple Java Components ... as well Trang 5 Frame Example public class TwoButtons { Frame f; Button redButton, blueButton; public TwoButttons() { f = new Frame(“Two Buttons Frame”); Trang 7 UML Notation The filled diamond

Ngày tải lên: 11/01/2020, 19:02

... Chapter One-Dimensional Arrays Lecture Slides to Accompany An Introduction to Computer Science Using Java (2nd Edition) by S.N Kamin, D Mickunas, E Reingold     Chapter ... error – trying to access variable outside counts Expressions as Subscripts • Array subscripts not have to be constants • Array subscripts need to be integer expressions that evaluate to valid subscript ... passed as an argument to a method, what is passed is a pointer to the array, not a new array (arrays are passed by reference) • This means that if the method makes changes to the array, these changes

Ngày tải lên: 11/01/2020, 19:27

... Trang 1 Chapter 1 What is Programming? Lecture Slides to Accompany An Introduction to Computer Science Using Java (2nd Edition) by Trang 2 Chapter Preview In this chapter ... Is pervasive — easy to create multiple objects of the same type — easy to create similar objects without having to rewrite the overlapping code ¢ OOP makes programs easier to understand and more ... * program — a set of directions telling a computer exactly what to do * programming languages — languages for specifying sequences of directions to a computer ¢ algorithm — a sequence of language

Ngày tải lên: 11/01/2020, 19:29

... It is legal to assign a char to an int variable int i = ‘a’; // assigns 97 to i • It is legal to assign an int to an char variable char c = 97; // assigns ‘a’ to c • It is possible to perform ... parentheses or within parentheses a Evaluate *, /, or % before + or – b Evaluate sequences of *, /, and % operators from left to right c Evaluate sequences of + and – operators from left to right   ... type int is not infinitely large and it is possible to compute a value incorrectly because the value is too large to be stored in an int variable storage location • Unlike the real numbers in mathematics

Ngày tải lên: 11/01/2020, 20:03

... Chapter Nested Loops and Two-Dimensional Arrays Lecture Slides to Accompany An Introduction to Computer Science Using Java (2nd Edition) by S.N Kamin, D Mickunas, E Reingold     Chapter ... of two-dimensional arrays to represent grids of information • show how computer graphics are generated using pixels     Nested for Loops • Nested loops frequently used to process twodimensional

Ngày tải lên: 11/01/2020, 20:21

... Chapter 15 Text Processing and File Input/Output Lecture Slides to Accompany An Introduction to Computer Science Using Java (2nd Edition) by S.N Kamin, D Mickunas, E Reingold Chapter ... objects Java provides constructors for each class • The StringBuffer class also contains a ToString method to allow easier output Sequential Files • Files are stored are stored on disks • In this ... the end of line • PrintWriter is a wrapper class provided to convert several data type values to printable forms Writing to a File • To make a file available for printing PrintWriter pr = new

Ngày tải lên: 11/01/2020, 20:25

... Chapter 10 Classes and Methods IV: Static Methods and Variables Lecture Slides to Accompany An Introduction to Computer Science Using Java (2nd Edition) by S.N Kamin, D Mickunas, E Reingold Chapter ... modifier static to the variables declaration • Allows variables to be modified once for all class objects • Can be accessed by class methods Class Methods • • • • Methods declared with static modifier ... associated with an object Is not invoked by sending it as a message to an object • The class method f in the class C is invoked using the notation f.C( … ) • It has no receiver and cannot refer to instance

Ngày tải lên: 11/01/2020, 20:29

... out.println(“You are eligible to vote.”);         Relational Operators < < less than > > greater than = greater than or equal to = == equal to != not equal to     if Statement with Optional else • An ... Chapter Decision Making Lecture Slides to Accompany An Introduction to Computer Science Using Java (2nd Edition) by S.N Kamin, D Mickunas, E Reingold     Chapter ... making in computer programming • describe the use of the Java if and switch statements • describe the use of Boolean expressions in Java if statements • discuss the use of integer selector variables

Ngày tải lên: 11/01/2020, 20:31

... Chapter Classes and Methods III: Static Methods and Variables Lecture Slides to Accompany An Introduction to Computer Science Using Java (2nd Edition) by S.N Kamin, D Mickunas, E Reingold     Chapter ... sent to objects • Objects respond to messages that are in their protocols or interfaces     Objects • Encapsulate data values within a single entity • Their behavior is often general enough to ... is stored on the system heap • A client is program that uses an object         Client Rights • To declare variables of the class type • To create instances of the class using constructors • To

Ngày tải lên: 15/05/2020, 22:27

... Chapter Nested Loops and Two-Dimensional Arrays Lecture Slides to Accompany An Introduction to Computer Science Using Java (2nd Edition) by S.N Kamin, D Mickunas, E Reingold     Chapter ... of two-dimensional arrays to represent grids of information • show how computer graphics are generated using pixels     Nested for Loops • Nested loops frequently used to process twodimensional

Ngày tải lên: 15/05/2020, 22:29

... all folks on crackmes.de, thank to all members of unpack.cn (especially fly and linhanshi). Great thanks to lena151(I like your tutorials). And finally, thanks to RICARDO NARVAJA and all members ... Thanks To ]== ++ iamidiot, WhyNotBar, trickyboy, dzungltvn, takada, hurt_heart , haule_nth, hytkl v v các bạn đã đóng góp rất nhiều cho REA. Hi vọng các bạn sẽ tiếp tục phát huy ☺ 1 INTRODUCTION ... đã đóng góp rất nhiều cho REA. Hi vọng các bạn sẽ tiếp tục phát huy ☺ 1 INTRODUCTION TO THE CRACKING WITH OLLYDBG FROM CRACKLATINOS (_kienmanowar_) I. Lời nói đầu Hà Nội trời...

Ngày tải lên: 19/10/2013, 14:15

... figure below, use to dimension the sketch. Pick to modify the dimensions. Pick it as reference. Pick it as reference. Pick it as reference. 1 ME-430 Introduction to Computer Aided Design ... Click . 18 Click Apply button to change the color of part. Click Close button. Click to save the part. 3 Type in ARM_BRACK for the name ... placement surface. 16 Click to add a new color. To open Color Editor, pick . Pick . 13 ADDING THE ROUNDS Click the Round Tool icon . Enter 5 for the radius...

Ngày tải lên: 27/10/2013, 17:15

... Sfondrini 15 Introduction to Version Control with CVS by Dejan Bosanac 25 Introduction to PHP-GTK by Eric Persson 30 Speaker on the High Seas An Interview with Wez Furlong 33 An Introduction to SQLite by ... label with the following text*/ 27 $label = &new GtkLabel(‘test’); 28 29 /* Create a button */ 30 $button = &new GtkButton(‘Ok’); 31 32 /* Connect the click_button() function to the ... be needed, but now it currently is, we might want to fix it. If we want to automatically overload a class, we only have to add this line to the constructor: overload(get_class($this)); That means that...

Ngày tải lên: 21/12/2013, 12:15