Big Java Late Objects
2nd Edition
ISBN: 9781119330455
Author: Horstmann
Publisher: WILEY
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Textbook Question
Chapter 4, Problem 14RE
Write pseudocode for a
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QuadraticAA.java
Write a program that solves quadratic equations of the form , where The values A, B, and C will be real numbers (doubles) that you will request from the user. The equation below is what is used to solve for . Remember, there will be two solutions for x (not necessarily distinct). No loops are necessary, so don’t include any.
To find the two solutions for this equation, you will use the quadratic formula:
Remember that it must be solved for both the and :
You will ask the user to input a value for A, B, and C (in that order, using those same letters), then you will use those values to find the two values of x as above. Your output MUST then display the original quadratic equation back to the user with their coefficients in place, and then output the two results. We will assume that the user will not put zero for A.
*Format ALL OUTPUT VALUES (including the equation) to have only two decimal places.
There is a test case below. Your program should run the…
Task 15
Write a Python program that takes a number and tells if it is a perfect number or not. [The input number has to be an INTEGER]
Perfect Number: An integer number is said to be a perfect number if its factors, including 1 but not the number itself, sum to the number.
Example01:
Input:
6
Output:
6 is a perfect number
Explanation:
6 have 4 divisors: 1, 2, 3, and 6.
If we add all factors except itself, 6 = 1 + 2 + 3.
Write a program that reads an integer and displays all its smallest factors, also known as prime factors. For example, if the input integer is 120, the output should be as follows:
2, 2, 2, 3, 5
Chapter 4 Solutions
Big Java Late Objects
Ch. 4.1 - How many years does it take for the investment to...Ch. 4.1 - If the interest rate is 10 percent per year, how...Ch. 4.1 - Modify the program so that the balance after each...Ch. 4.1 - Suppose we change the program so that the...Ch. 4.1 - What does the following loop print? int n = 1;...Ch. 4.2 - Hand-trace the following code, showing the value...Ch. 4.2 - Hand-trace the following code, showing the value...Ch. 4.2 - Hand-trace the following code, assuming that a is...Ch. 4.2 - Trace the following code. What error do you...Ch. 4.2 - Prob. 10SC
Ch. 4.3 - Write the for loop of the InvestmentTable.java...Ch. 4.3 - How many numbers does this loop print? for (int n...Ch. 4.3 - Write a for loop that prints all even numbers...Ch. 4.3 - Write a for loop that computes the sum of the...Ch. 4.3 - How would you modify the for loop of the...Ch. 4.4 - Prob. 16SCCh. 4.4 - Rewrite the input check do loop using a while loop...Ch. 4.4 - Suppose Java didnt have a do loop. Could you...Ch. 4.4 - Write a do loop that reads integers and computes...Ch. 4.4 - Write a do loop that reads integers and computes...Ch. 4.5 - What does the SentinelDemo.java program print when...Ch. 4.5 - Why does the SentinelDemo.java program have to...Ch. 4.5 - What would happen if the declaration of the salary...Ch. 4.5 - In the last example of this section, we prompt the...Ch. 4.5 - Prob. 25SCCh. 4.6 - Prob. 26SCCh. 4.6 - Google has a simple interface for converting...Ch. 4.6 - Consider a modification of the program in Self...Ch. 4.6 - Prob. 29SCCh. 4.6 - Produce a storyboard for a program that compares...Ch. 4.7 - What total is computed when no user input is...Ch. 4.7 - Prob. 32SCCh. 4.7 - What are the values of position and ch when no...Ch. 4.7 - Prob. 34SCCh. 4.7 - Prob. 35SCCh. 4.7 - Prob. 36SCCh. 4.8 - Why is there a statement System.out.println(); in...Ch. 4.8 - How would you change the program to display all...Ch. 4.8 - Prob. 39SCCh. 4.8 - What do the following nested loops display? for...Ch. 4.8 - Prob. 41SCCh. 4.9 - Prob. 42SCCh. 4.9 - You need to write a program for DNA analysis that...Ch. 4.9 - Prob. 44SCCh. 4.9 - Consider the task of finding numbers in a string....Ch. 4.10 - How do you simulate a coin toss with the...Ch. 4.10 - How do you simulate the picking of a random...Ch. 4.10 - Why does the loop body in Dice.java call...Ch. 4.10 - Prob. 49SCCh. 4.10 - Prob. 50SCCh. 4 - Given the variables String stars = ""; String...Ch. 4 - What do these loops print? a. int i = 0; int j =...Ch. 4 - What do these code snippets print? a. int result =...Ch. 4 - Write awhile loop that prints a. All squares less...Ch. 4 - Write a loop that computes a. The sum of all even...Ch. 4 - Provide trace tables for these loops. a. int i =...Ch. 4 - What do these loops print? a. for (int i = 1; i ...Ch. 4 - What is an infinite loop? On your computer, how...Ch. 4 - Write a program trace for the pseudocode in...Ch. 4 - What is an off-by-one error? Give an example from...Ch. 4 - What is a sentinel value? Give a simple rule when...Ch. 4 - Which loop statements does Java support? Give...Ch. 4 - How many iterations do the following loops carry...Ch. 4 - Write pseudocode for a program that prints a...Ch. 4 - Prob. 15RECh. 4 - Write pseudocode for a program that reads a...Ch. 4 - Write pseudocode for a program that reads a...Ch. 4 - Rewrite the following for loop into a while loop....Ch. 4 - Rewrite the following do loop into a while loop....Ch. 4 - Provide trace tables of the following loops. a....Ch. 4 - What do the following loops print? Work out the...Ch. 4 - What do the following program segments print? Find...Ch. 4 - Prob. 23RECh. 4 - Add a storyboard panel for the conversion program...Ch. 4 - In Section 4.6, we decided to show users a list of...Ch. 4 - Change the storyboards in Section 4.6 to support a...Ch. 4 - Draw a flowchart for a program that carries out...Ch. 4 - In Section 4.7.5, the code for finding the largest...Ch. 4 - What are nested loops? Give an example where a...Ch. 4 - The nested loops for (int 1 = 1; 1 = height; i++)...Ch. 4 - Suppose you design an educational game to teach...Ch. 4 - In a travel simulation, Harry will visit one of...Ch. 4 - Write programs with loops that compute a. The sum...Ch. 4 - Write programs that read a sequence of integer...Ch. 4 - Write programs that read a line of input as a...Ch. 4 - Complete the program in How To 4.1 on page 171....Ch. 4 - Write a program that reads a set of floating-point...Ch. 4 - Translate the following pseudocode for finding the...Ch. 4 - Translate the following pseudocode for randomly...Ch. 4 - Write a program that reads a word and prints each...Ch. 4 - Write a program that reads a word and prints the...Ch. 4 - Write a program that reads a word and prints the...Ch. 4 - Write a program that reads a word and prints the...Ch. 4 - Write a program that reads a word and prints all...Ch. 4 - Write a program that reads a string and prints the...Ch. 4 - Write a program that reads a sequence of words and...Ch. 4 - Write a program that prints all powers of 2 from...Ch. 4 - Write a program that reads a number and prints all...Ch. 4 - Prob. 18PECh. 4 - Write a program that reads an integer and...Ch. 4 - Write a program that reads an integer and...Ch. 4 - Write a program to plot the following face.Ch. 4 - Write a graphical application that displays a...Ch. 4 - Enhance Worked Example 4.1 to check that the...Ch. 4 - Mean and standard deviation. Write a program that...Ch. 4 - The Fibonacci numbers are defined by the sequence...Ch. 4 - Factoring of integers. Write a program that asks...Ch. 4 - Prime numbers. Write a program that prompts the...Ch. 4 - The game of Nim. This is a well-known game with a...Ch. 4 - The Drunkards Walk. A drunkard in a grid of...Ch. 4 - The Monty Hall Paradox. Marilyn vos Savant...Ch. 4 - A simple random generator is obtained by the...Ch. 4 - The Buffon Needle Experiment. The following...Ch. 4 - In the 17th century, the discipline of probability...Ch. 4 - Write a program that reads an initial investment...Ch. 4 - Currency conversion. Write a program that first...Ch. 4 - Write a program that first asks the user to type...Ch. 4 - Your company has shares of stock it would like to...Ch. 4 - Write an application to pre-sell a limited number...Ch. 4 - You need to control the number of people who can...Ch. 4 - Credit Card Number Check. The last digit of a...Ch. 4 - In a predator-prey simulation, you compute the...Ch. 4 - Projectile flight. Suppose a cannonball is...Ch. 4 - Radioactive decay of radioactive materials can be...Ch. 4 - The photo at left shows an electric device called...Ch. 4 - Write a graphical application that draws a spiral,...Ch. 4 - Prob. 28PPCh. 4 - Draw a picture of the four-leaved rose whose...
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