Java How To Program (Early Objects)
10th Edition
ISBN: 9780133807943
Author: Deitel, Paul
Publisher: Pearson Education
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Textbook Question
Chapter 6, Problem 19.1E
(Prime Numbers) A positive integer is prime if it’s divisible by only 1 and itself. For example, 2, 3, 5 and 7 are prime, but 4, 6, 8 and 9 are not. The number 1, by definition, is not prime.
- 1. Write a method that determines whether a number is prime.
- 2. Use this method in an application that determines and displays all the prime numbers less than 10,000. How many numbers up to 10,000 do you have to test to ensure that you’ve found all the primes?
- 3. Initially, you might think that n/2 is the upper limit for which you must test to see whether a number n is prime, but you need only go as high as the square root of n. Rewrite the
program , and run it both ways.
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Chapter 6 Solutions
Java How To Program (Early Objects)
Ch. 6 - A method is invoked with a(n)Ch. 6 - Prob. 1.2SRECh. 6 - Prob. 1.3SRECh. 6 - The keywordindicates that a method does not return...Ch. 6 - Prob. 1.5SRECh. 6 - Prob. 1.6SRECh. 6 - Prob. 1.7SRECh. 6 - An object of classproduces truly random numbers.Ch. 6 - Prob. 1.9SRECh. 6 - Prob. 1.10SRE
Ch. 6 - Prob. 1.11SRECh. 6 - Prob. 1.12SRECh. 6 - For the class Craps in Fig. 6.8, state the scope...Ch. 6 - the variable die1.Ch. 6 - the method rollDice.Ch. 6 - Prob. 2.4SRECh. 6 - Prob. 2.5SRECh. 6 - Write an application that tests whether the...Ch. 6 - Prob. 4.1SRECh. 6 - Method smallest, which takes three integers x, y...Ch. 6 - Prob. 4.3SRECh. 6 - Method intToFloat, which takes integer argument...Ch. 6 - Find the error in each of the following program...Ch. 6 - 1 int sum(int x, int y) { 2 int result; 3 result =...Ch. 6 - 1 void f(float a); { 2 float a; 3...Ch. 6 - 1 void product() { 2int, a = 6; 3int b = 5; 4int c...Ch. 6 - Declare method sphereVolume to calculate and...Ch. 6 - What is the value of x after each of the following...Ch. 6 - What is the value of x after each of the following...Ch. 6 - What is the value of x after each of the following...Ch. 6 - What is the value of x after each of the following...Ch. 6 - What is the value of x after each of the following...Ch. 6 - What is the value of x after each of the following...Ch. 6 - What is the value of x after each of the following...Ch. 6 - (Parking Charges) A parking garage charges a 2.00...Ch. 6 - (Rounding Numbers) Math.floor can be used to round...Ch. 6 - To round numbers to specific decimal places, use a...Ch. 6 - Prob. 5.1ECh. 6 - Write statements that assign random integers to...Ch. 6 - Write statements that will display a random number...Ch. 6 - (Exponentiation) Write a method integer Power...Ch. 6 - Define a method hypotenuse that calculates the...Ch. 6 - Prob. 10.1ECh. 6 - Prob. 11.1ECh. 6 - (Displaying a Square of Asterisks) Write a method...Ch. 6 - (Displaying a Square of Any Character) Modify the...Ch. 6 - Prob. 14.1ECh. 6 - (Separating Digits) Write methods that accomplish...Ch. 6 - (Separating Digits) Write methods that accomplish...Ch. 6 - Prob. 15.3ECh. 6 - (Temperature Conversions) Implement the following...Ch. 6 - Method fahrenheit returns the Fahrenheit...Ch. 6 - Prob. 16.3ECh. 6 - (Find the Minimum) Write a method minimum3 that...Ch. 6 - Prob. 18.1ECh. 6 - (Prime Numbers) A positive integer is prime if its...Ch. 6 - Prob. 20.1ECh. 6 - (Greatest Common Divisor) The greatest common...Ch. 6 - Write a method qualityPoints that inputs a...Ch. 6 - Write an application that simulates coin tossing....Ch. 6 - (Guess the Number) Write an application that plays...Ch. 6 - Prob. 25.1ECh. 6 - Prob. 26.1ECh. 6 - (Craps Game Modification) Modify the craps program...Ch. 6 - (Table of Binary, Octal and Hexadecimal Numbers)...Ch. 6 - (Computer-Assisted Instruction) The use of...Ch. 6 - Prob. 2MDCh. 6 - Prob. 3MDCh. 6 - (Computer-Assisted Instruction: Difficulty Levels)...
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