TAILIEUCHUNG - Lecture Fundamentals of computing 1: Lecture 5 - Duy Tan University

Lecture Fundamentals of computing 1: Lecture 5 - Random and other types. This chapter presents the following content: Random question, Random answer, homework. Inviting you refer. | Random and other types nextDouble method returns a double between - Example: Get a random GPA value between and : double randomGpa = () * + ; Any set of possible values can be mapped to integers code to randomly play Rock-Paper-Scissors: int r = (3); if (r == 0) { ("Rock"); } else if (r == 1) { ("Paper"); } else { // r == 2 ("Scissors"); } Random question Write a program that simulates rolling of two 6-sided dice until their combined result comes up as 7. 2 + 4 = 6 3 + 5 = 8 5 + 6 = 11 1 + 1 = 2 4 + 3 = 7 You won after 5 tries! Random answer // Rolls two dice until a sum of 7 is reached. import .*; public class Dice { public static void main(String[] args) { Random rand = new Random(); int tries = 0; int sum = 0; while (sum != 7) { // roll the dice once int roll1 = (6) + 1; int roll2 = (6) + 1; sum = roll1 + roll2; (roll1 + " + " + roll2 + " = " + sum); tries++; } ("You won after " + tries + " tries!"); } } Homework Write a program that plays an adding game. Ask user to solve random adding problems with 2-5 numbers. The user gets 1 point for a correct answer, 0 for incorrect. The program stops after 3 incorrect answers. 4 + 10 + 3 + 10 = 27 9 + 2 = 11 8 + 6 + 7 + 9 = 25 Wrong! The answer was 30 5 + 9 = 13 Wrong! The answer was 14 4 + 9 + 9 = 22 3 + 1 + 7 + 2 = 13 4 + 2 + 10 + 9 + 7 = 42 Wrong! The answer was 32 You earned 4 total points. Answer // Asks the user to do adding problems and scores them. import .*; public class AddingGame { public static void main(String[] args) { Scanner console = new Scanner(); Random rand = new Random(); // play until user gets 3 wrong int points = 0; int wrong = 0; while (wrong 0) { points++; } else { wrong++; } } ("You earned " + points + " total points."); } Answer 2 . // Builds one addition problem and presents it to the user. // Returns 1 point if you get it right, 0 if wrong. public static int play(Scanner console, Random rand) { // print the operands being added, and sum them int operands = (4) + 2; int sum = (10) + 1; (sum); for (int i = 2; i ask them, how might the computer store "hi" using binary digits? (some kind of mapping; ASCII)

• Kỹ thuật lập trình
• Fundamentals of computing
• Lecture Fundamentals of computing 1
• Random question
• Random answer
• Java programming
• Mobile computing
• Wireless and mobile computing
• Services data
• Wireless communication
• Transmission fundamentals
• Mobile computing transmission fundamentals
• Developing programming skills
• Data type
• Conditional expression
• Computer vocabulary
• Installing Eclipse
• Basic Java programs
• Structured algorithms
• Data types
• Number primitive types
• Mixing types
• Console output
• Scanner class
• Common pitfalls
• Imported class
• Relational expressions
• If statements
• Switch statements
• Reference semantics
• Arrays for tallying
• Arrays as parameter
• The String class
• Immutable string
• String comparison
• Java OOPs
• Method overloading
• Object Oriented Programming System
• Syntax of inheritance
• Types of inheritance
• Method overriding
• Abstract class
• Abstract method
• Extended interface
• Java Access Modifier
• Static keyword
• Final keyword
• Exception handing
• Multiple catch block
• Nested try statements
• File processing
• Methods of class file
• File paths
• Graphic User Interface
• Layout manager
• Mouse events
• Inner class
• Static inner class
• Anonymous inner class
• Discovering computers fundamentals
• Computers fundamentals
• Enterprise Computing
• Information systems in the enterprise
• Enterprise wide technologies
• Cloud computing
• Frequency period relationship
• Signals for conveying information
• Digital data transmission
• Programming in C++
• Lecture Programming in C++
• History of electronic computers
• Computing fundamentals
• Memory access
• Central processing unit