python programming an introduction to computer science ppt

... of computers A famous computerscientist named Edsgar Dijkstra once quipped that computers are to computer science what telescopes are toastronomy The computer is an important tool in computer science, ... for us to understand, but we need some way to translate the high-level languageinto the machine language that the computer can execute There are two ways to do this: a high-level language can either ... a computer to understandhuman language is still an unsolved problem Even if computers could understand us, human languages are not very well suited for describing complexalgorithms Natural language

Ngày tải lên: 25/03/2017, 17:07

... Trang 1   Chapter 7 Classes and Methods III: Static Methods and Variables Lecture Slides to Accompany An Introduction to Computer Science Using Java (2nd Edition) ... can be derived using a mechanism known as Trang 5   Trang 6   Client Rights • To declare variables of the class type • To create instances of the class using constructors • To send messages to ... object to remain visible to clients – classes can be linked when a client passes an object as a message argument to another object Trang 33   Object Containing Reference to Another Object Trang

Ngày tải lên: 11/01/2020, 18:40

... Trang 1   Chapter 6 Iteration Lecture Slides to Accompany An Introduction to Computer Science Using Java (2nd Edition) by S.N Kamin, D Mickunas, E Reingold Trang 2   Chapter Preview ... Trang 18   Trang 19   Drawing in Java // code to read and display GIF image from file import java.awt.*; Import CSLib.*; … DrawingBox g = new DrawingBox(); … Toolkit tools = Toolkit.getDefaultToolkit(): ... correctness of loops • show the use of loops in data entry and computer animation Trang 3   while Loop • Repeated executes body of the loop which can be a single or compound statement • A while loop

Ngày tải lên: 11/01/2020, 18:43

... Trang 1   Chapter 12 Inheritance and Exceptions Lecture Slides to Accompany An Introduction to Computer Science Using Java (2nd Edition) by S.N Kamin, D Mickunas, E Reingold Trang 2   Chapter ... extends B { Trang 11   Trang 12   Inheritance and Messages • When C is a subclass of B – C objects can respond to all messages that B objects can respond to – In general C objects can be used whenever ... in the inheritance hierarchy are its descend a e nts • The classes that appear above a given class in the inheritance hierarchy are its ancestors Trang 14   Trang 15   Inheritance and Visibility

Ngày tải lên: 11/01/2020, 18:45

... Trang 1Chapter 14Recursion Lecture Slides to Accompany An Introduction to Computer Science Using Java (2nd Edition) by Trang 2Chapter PreviewIn this chapter ... or more easier to solve subproblems Trang 5Counting Digits in JavaTrang 6• Use f(y) to compute f(x)• For this to work, there has to be at least one value of x for which f(x) can be computed ... divide and conquer principle • Recursive divide and conquer algorithms are Trang 9Evaluating Exponents Using Divide and Conquer static int power(int k, int n) { // raise k to the power n Trang

Ngày tải lên: 11/01/2020, 18:46

... Trang 1Chapter 11 Java AWT Part |: Mouse Events (Optional) Lecture Slides to Accompany An Introduction to Computer Science Using Java (2nd Edition) by S.N Kamin, D Mickunas, E Reingold Trang ... driven programming show how a program 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 ... send messages to an event manager requesting to be notified when a particular message occurs Event managers send messages to listeners notifying them when a particular event occurs Trang 5Creating

Ngày tải lên: 11/01/2020, 18:47

... Trang 1   Chapter 5 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 Trang 2   Chapter ... comments Trang 5   Instance Variables • Local variables – variables declared inside methods – not accessible to any other method – cannot be used for communication Trang 6   Initialization of Instance ... Outline Trang 17   Geometry of Clock Drawing Trang 19   Drawing the Clock Hands • Assuming (x, y) is the bottom vertex and recalling that computer graphics coordinates are upside down Trang 20 

Ngày tải lên: 11/01/2020, 19:00

... need to use super ( )to set the frame title Trang 10Frame Inheritance Example public class TwoButtons extends Frame { Button redButton, blueButton; public TwoButttons() { super(“Two Buttons ... Component or Container Trang 8Using Inheritance ¢ It is possible to use inheritance to allow TwoButtons to become a frame tn Its own right ¢ Note that the UML diagram will show TwoButtons as a subclass ... Trang 29Sonne hati Trang 30Typical GUI Frame Panel pi = new Panel(); Trang 31¢ Scrollbars can be displayed vertically ¢ User movement options — Clicking either end button causes bubble to

Ngày tải lên: 11/01/2020, 19:02

... Trang 1   Chapter 2 Classes and Methods I Lecture Slides to Accompany An Introduction to Computer Science Using Java (2nd Edition) byS.N Kamin, D Mickunas, E Reingold Trang 2   Chapter ... Trang 11   Trang 13• void return type– Means it does not return a value to the caller (client) Trang 14– Display text representation of argument and advance output cursor to the next line Trang ... using an editor • Compile the source program by typing javac Hitwall.java • Execute the compiled program by typing java Hitwall Trang 6   Program Elements – Part 1 • white space – blank lines and

Ngày tải lên: 11/01/2020, 19:06

... Trang 5• Each box is an int variable• The numbers on top are each variable’s subscript or index • An array of size 10 has subscripts 0 to 9 Trang 6   Array Subscripts • Arrays can contain any ... • introduce algorithms for searching and sorting arrays • show how multiple images can be painted from an array to use in programming simple animations Trang 4counts = new int[10];scores = new ... in an array (but total computer memory is finite) Trang 16   Trang 17   Processing Parallel Arrays • This loop counts the number of students whose performance improved from the first test to

Ngày tải lên: 11/01/2020, 19:27

... Trang 1Chapter 1 What is Programming? Lecture Slides to Accompany An Introduction to Computer Science Using Java (2nd Edition) by S.N Kamin, D Mickunas, E Reingold Trang 2Chapter ... needed in programming ¢ design an algorithm to solve a problem ¢ write a program to implement an algorithm ¢ discuss the importance of object-oriented programming * discuss some basics of computer ... entering and running Java programs Trang 3— a sequence of language independent steps which may be followed to solve a problem Trang 4Final Maze Solving Program Trang 5Object-Oriented Programming

Ngày tải lên: 11/01/2020, 19:29

... Trang 1   Chapter 3 Fundamental Data Types of Java Lecture Slides to Accompany An Introduction to Computer Science Using Java (2nd Edition) byS.N Kamin, D Mickunas, E Reingold Trang 2  ... % before + or – b Evaluate sequences of *, /, and % operators from left to right c Evaluate sequences of + and – operators from left to right Trang 12   Real Arithmetic Operations Symbol Operation ... the 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

Ngày tải lên: 11/01/2020, 20:03

... Trang 1   Chapter 9 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 Trang ... double[COLS]; Trang 15   Computer Graphics • Computer graphics is the study of methods of representing and manipulating images • A two-dimensional array can be used to represent the image to be displayed ... new double[ROWS][COLS] Trang 9   Trang 10   Computing Row Totals double [] yearTotals = new double[ROWS]; for (y = 0; y < ROWS; y++) { // compute total for year y yearTotals[y] = 0.0; for

Ngày tải lên: 11/01/2020, 20:21

... Trang 1Chapter 15Text 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 Trang 2Chapter ... StringBuffer class • show how files can be read and written • discuss how to handle file input and output exceptions • demonstrate how to perform console input and output Trang 3• Java provides a number ... String • To convert between String objects and StringBuffer objects Java provides constructors for each class • The StringBuffer class also contains a ToString method to allow easier output Trang

Ngày tải lên: 11/01/2020, 20:25

... Trang 1Chapter 10Classes and Methods IV: Static Methods and Variables Lecture Slides to Accompany An Introduction to Computer Science Using Java (2nd Edition) by ... 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 variables • It can refer to and manipulate ... are stored in files have the java extension • Packages can contain both interfaces and classes Trang 14Defining Uniform Constants• Interfaces can be used ro give definitions of symbolic constants

Ngày tải lên: 11/01/2020, 20:29

... selector variables in Java switch statements Trang 4   Trang 5   Relational Operators < < less than > > greater than <= less than or equal to >= greater than or equal to = ... Trang 1   Chapter 4 Decision Making Lecture Slides to Accompany An Introduction to Computer Science Using Java (2nd Edition) by S.N Kamin, D Mickunas, E Reingold Trang 2   Chapter ... Trang 9 else if (condition-2) statement-2; else statement-3; Trang 10   Trang 11 else statement-2; Trang 12   Trang 13   Trang 14 else if (condition-2) statement-1;Trang 15   Boolean

Ngày tải lên: 11/01/2020, 20:31

... Trang 1   Chapter 7 Classes and Methods III: Static Methods and Variables Lecture Slides to Accompany An Introduction to Computer Science Using Java (2nd Edition) ... can be derived using a mechanism known as Trang 5   Trang 6   Client Rights • To declare variables of the class type • To create instances of the class using constructors • To send messages to ... object to remain visible to clients – classes can be linked when a client passes an object as a message argument to another object Trang 33   Object Containing Reference to Another Object Trang

Ngày tải lên: 15/05/2020, 22:27

... Trang 1   Chapter 9 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 Trang ... double[COLS]; Trang 15   Computer Graphics • Computer graphics is the study of methods of representing and manipulating images • A two-dimensional array can be used to represent the image to be displayed ... new double[ROWS][COLS] Trang 9   Trang 10   Computing Row Totals double [] yearTotals = new double[ROWS]; for (y = 0; y < ROWS; y++) { // compute total for year y yearTotals[y] = 0.0; for

Ngày tải lên: 15/05/2020, 22:29

... yell at Richard to bid his friend stop. For some reason, he has to go upstairs to turn off the machine (although it appears to be fully portable and self-contained) and this takes an inordinate ... unpleasant ones are more likely to awaken us and tilt the scales towards negative emotion. A major disadvantage of sleep lab reports is that they are very expensive to obtain and tend to come ... in Chapters 4 and 5, this change in mode is affected 11 Why did the analysis of dream content fail to become a science? in sleep and, when this happens, the mind is turned on too. Naturally....

Ngày tải lên: 24/01/2014, 08:20

... layer feed-forward network can overcome many restrictions, but did not present a solution to the problem of how to adjust the weights from input to hidden units. An answer to this question was presented ... is multiplied with n, leading to a very large network, which is slow and dicult to train. The Jordan and Elman networks provide a solution to this problem. Due to the recurrent connections, a ... 5.3. The same test can b e done with an ordinary 0 2 4 500400300200100 ;2 ;4 Figure 5.3: Training an Elman network to control an object. The solid line depicts the desired trajectory x d  the dashed...

Ngày tải lên: 20/12/2013, 19:15