Librería Portfolio

Currently used at many colleges, universities, and high schools, this hands-on introduction to computer science is ideal for people with little or no programming experience. The goal of this concise book is not just to teach you Java, but to help you think like a computer scientist. You'll learn how to program-a useful skill by itself-but you'll also discover how to use programming as a means to an end.

Authors Allen Downey and Chris Mayfield start with the most basic concepts and gradually move into topics that are more complex, such as recursion and object-oriented programming. Each brief chapter covers the material for one week of a college course and includes exercises to help you practice what you've learned.

Learn one concept at a time: tackle complex topics in a series of small steps with examples
Understand how to formulate problems, think creatively about solutions, and write programs clearly and accurately
Determine which development techniques work best for you, and practice the important skill of debugging
Learn relationships among input and output, decisions and loops, classes and methods, strings and arrays
Work on exercises involving word games, graphics, puzzles, and playing cards



Chapter 1The Way of the Program
What Is Programming?
What Is Computer Science?
Programming Languages
The Hello World Program
Displaying Strings
Escape Sequences
Formatting Code
Debugging Code
Vocabulary
Exercises
Chapter 2Variables and Operators
Declaring Variables
Assignment
State Diagrams
Printing Variables
Arithmetic Operators
Floating-Point Numbers
Rounding Errors
Operators for Strings
Composition
Types of Errors
Vocabulary
Exercises
Chapter 3Input and Output
The System Class
The Scanner Class
Program Structure
Inches to Centimeters
Literals and Constants
Formatting Output
Centimeters to Inches
Modulus Operator
Putting It All Together
The Scanner Bug
Vocabulary
Exercises
Chapter 4Void Methods
Math Methods
Composition Revisited
Adding New Methods
Flow of Execution
Parameters and Arguments
Multiple Parameters
Stack Diagrams
Reading Documentation
Writing Documentation
Vocabulary
Exercises
Chapter 5Conditionals and Logic
Relational Operators
Logical Operators
Conditional Statements
Chaining and Nesting
Flag Variables
The return Statement
Validating Input
Recursive Methods
Recursive Stack Diagrams
Binary Numbers
Vocabulary
Exercises
Chapter 6Value Methods
Return Values
Writing Methods
Method Composition
Overloading
Boolean Methods
Javadoc Tags
More Recursion
Leap of Faith
One More Example
Vocabulary
Exercises
Chapter 7Loops
The while Statement
Generating Tables
Encapsulation and Generalization
More Generalization
The for Statement
The do-while Loop
break and continue
Vocabulary
Exercises
Chapter 8Arrays
Creating Arrays
Accessing Elements
Displaying Arrays
Copying Arrays
Array Length
Array Traversal
Random Numbers
Traverse and Count
Building a Histogram
The Enhanced for Loop
Vocabulary
Exercises
Chapter 9Strings and Things
Characters
Strings Are Immutable
String Traversal
Substrings
The indexOf Method
String Comparison
String Formatting
Wrapper Classes
Command-Line Arguments
Vocabulary
Exercises
Chapter 10Objects
Point Objects
Attributes
Objects as Parameters
Objects as Return Types
Mutable Objects
Aliasing
The null Keyword
Garbage Collection
Class Diagrams
Java Library Source
Vocabulary
Exercises
Chapter 11Classes
The Time Class
Constructors
More Constructors
Getters and Setters
Displaying Objects
The toString Method
The equals Method
Adding Times
Pure Methods and Modifiers
Vocabulary
Exercises
Chapter 12Arrays of Objects
Card Objects
Card toString
Class Variables
The compareTo Method
Cards Are Immutable
Arrays of Cards
Sequential Search
Binary Search
Tracing the Code
Recursive Version
Vocabulary
Exercises
Chapter 13Objects of Arrays
The Deck Class
Shuffling Decks
Selection Sort
Merge Sort
Subdecks
Merging Decks
Adding Recursion
Vocabulary
Exercises
Chapter 14Objects of Objects
Decks and Hands
CardCollection
Inheritance
Dealing Cards
The Player Class
The Eights Class
Class Relationships
Vocabulary
Exercises
Appendix Development Tools
Installing DrJava
DrJava Interactions
Command-Line Interface
Command-Line Testing
Running Checkstyle
Tracing with a Debugger
Testing with JUnit
Vocabulary
Appendix Java 2D Graphics
Creating Graphics
Graphics Methods
Example Drawing
Vocabulary
Exercises
Appendix Debugging
Compile-Time Errors
Run-Time Errors
Logic Errors