Starting Out with Java: From Control Structures through Objects (7th Edition) (What's New in Computer Science)
7th Edition
ISBN: 9780134802213
Author: Tony Gaddis
Publisher: PEARSON
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Textbook Question
Chapter 2, Problem 21PC
Compound Interest
When a bank account pays compound interest, it pays interest not only on the principal amount that was deposited into the account, but also on the interest that has accumulated over time. Suppose you want to deposit some money into a savings account, and let the account earn compound interest for a certain number of years. The formula for calculating the balance of the account after a specified number of years is:
The terms in the formula are:
A is the amount of money in the account after the specified number of years.
P is the principal amount that was originally deposited into the account.
r is the annual interest rate.
n is the number of times per year that the interest is compounded.
t is the specified number of years.
Write a
- The amount of principal originally deposited into the account
- The annual interest rate paid by the account
- The number of times per year that the interest is compounded (For example, if interest is compounded monthly, enter 12. If interest is compounded quarterly, enter 4.)
- The number of years the account will be left to earn interest
Once the input data has been entered, the program should calculate and display the amount of money that will be in the account after the specified number of years.
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Brute force equation solver
this is python program.
Numerous engineering and scientific applications require finding solutions to a set of equations. Ex: 8x + 7y = 38 and 3x - 5y = -1 have a solution x = 3, y = 2. Given integer coefficients of two linear equations with variables x and y, use brute force to find an integer solution for x and y in the range -10 to 10.
Ex: If the input is:
8 7 38 3 -5 -1
Then the output is:
3 2
Use this brute force approach:
For every value of x from -10 to 10 For every value of y from -10 to 10 Check if the current x and y satisfy both equations. If so, output the solution, and finish.
Ex: If no solution is found, output:
No solution
You can assume the two equations have no more than one solution.
Note: Elegant mathematical techniques exist to solve such linear equations. However, for other kinds of equations or situations, brute force can be handy.
''' Read in first equation, ax + by = c '''a = int(input())b = int(input())c = int(input())
''' Read in…
Chapter 2 Solutions
Starting Out with Java: From Control Structures through Objects (7th Edition) (What's New in Computer Science)
Ch. 2.1 - The following program will not compile because the...Ch. 2.1 - When the program in Question 2.1 is saved to a...Ch. 2.1 - Complete the following program skeleton so it...Ch. 2.1 - On paper, write a program that will display your...Ch. 2.1 - Prob. 2.5CPCh. 2.1 - Every Java application program must have...Ch. 2.2 - The following program will not compile because the...Ch. 2.2 - Study the following program and show what it will...Ch. 2.2 - On paper, write a program that will display your...Ch. 2.3 - Examine the following program. // This program...
Ch. 2.3 - What will the following program display on the...Ch. 2.4 - Which of the following are illegal variable names...Ch. 2.4 - Prob. 2.13CPCh. 2.4 - Prob. 2.14CPCh. 2.4 - Prob. 2.15CPCh. 2.4 - A program declares a float variable named number,...Ch. 2.4 - Prob. 2.17CPCh. 2.4 - Prob. 2.18CPCh. 2.4 - Prob. 2.19CPCh. 2.4 - Prob. 2.20CPCh. 2.4 - What is wrong with the following statement? char...Ch. 2.5 - Prob. 2.22CPCh. 2.5 - Prob. 2.23CPCh. 2.6 - Write statements using combined assignment...Ch. 2.7 - The following declaration appears in a program:...Ch. 2.7 - The variable a is a float and the variable b is a...Ch. 2.9 - Write a statement that declares a String variable...Ch. 2.9 - Assume that stringLength is an int variable. Write...Ch. 2.9 - Prob. 2.29CPCh. 2.9 - Prob. 2.30CPCh. 2.9 - Prob. 2.31CPCh. 2.11 - Prob. 2.32CPCh. 2.11 - How are documentation comments different from...Ch. 2.14 - Prob. 2.34CPCh. 2.14 - Write code that will display each of the dialog...Ch. 2.14 - Write code that displays an input dialog asking...Ch. 2.14 - Prob. 2.37CPCh. 2 - Every complete statement ends with a __________....Ch. 2 - The following data 72 'A' Hello World 2.8712 are...Ch. 2 - A group of statements, such as the contents of a...Ch. 2 - Which of the following are not valid assignment...Ch. 2 - Which of the following are nor valid println...Ch. 2 - The negation operator is __________. a. unary b....Ch. 2 - This key word is used to declare a named constant....Ch. 2 - These characters mark the beginning of a...Ch. 2 - These characters mark the beginning of a...Ch. 2 - These characters mark the beginning of a...Ch. 2 - Which Scanner class method would you use to read a...Ch. 2 - Which Scanner class method would you use to read a...Ch. 2 - You can use this class to display dialog boxes. a....Ch. 2 - Prob. 14MCCh. 2 - Prob. 15MCCh. 2 - True or False: A left brace in a Java program is...Ch. 2 - True or False: A variable must be declared before...Ch. 2 - True or False: Variable names may begin with a...Ch. 2 - True or False: You cannot change the value of a...Ch. 2 - True or False: Comments that begin with / / can be...Ch. 2 - True or False: If one of an operators operands is...Ch. 2 - What will the following code segments print on the...Ch. 2 - int x = 0, y=2; x = y 4; System.out.println(x +...Ch. 2 - System.out.print(I am the incredible);...Ch. 2 - System.out.print(Be careful\n);...Ch. 2 - int a, x = 23; a = x % 2; System.out.println(x +...Ch. 2 - Find the Error There are a number of syntax errors...Ch. 2 - Show how the double variables temp, weight, and...Ch. 2 - Prob. 2AWCh. 2 - Write assignment statements that perform the...Ch. 2 - Assume the variables result, w, x, y, and z are...Ch. 2 - Prob. 5AWCh. 2 - Modify the following program so it prints two...Ch. 2 - What will the following code output? int apples =...Ch. 2 - What will the following code output? double d =...Ch. 2 - What will the following code output? String...Ch. 2 - What will the following code output? String...Ch. 2 - Convert the following pseudocode to Java code. Be...Ch. 2 - Prob. 12AWCh. 2 - Write the code to set up all the necessary objects...Ch. 2 - Prob. 14AWCh. 2 - A program has a float variable named total and a...Ch. 2 - Is the following comment a single-line style...Ch. 2 - Is the following comment a single-line style...Ch. 2 - Describe what the phrase self-documenting program...Ch. 2 - Prob. 4SACh. 2 - Prob. 5SACh. 2 - What does a variable declaration tell the Java...Ch. 2 - Prob. 7SACh. 2 - What things must be considered when deciding on a...Ch. 2 - Briefly describe the difference between variable...Ch. 2 - What is the difference between comments that start...Ch. 2 - Briefly describe what programming style means. Why...Ch. 2 - Assume that a program uses the named constant PI...Ch. 2 - Assume the file Sales Average, java is a Java...Ch. 2 - Prob. 14SACh. 2 - Name, Age, and Annual Income Write a program that...Ch. 2 - Name and Initials Write a program that has the...Ch. 2 - Personal Information Write a program that displays...Ch. 2 - Star Pattern Write a program that displays the...Ch. 2 - Sales Prediction The East Coast sales division of...Ch. 2 - Land Calculation One acre of land is equivalent to...Ch. 2 - Sales Tax Write a program that will ask the user...Ch. 2 - Cookie Calories A bag of cookies holds 40 cookies....Ch. 2 - Miles-per-Gallon A cars miles-per-gallon (MPG) can...Ch. 2 - Test Average Write a program that asks the user to...Ch. 2 - Circuit Board Profit An electronics company sells...Ch. 2 - Prob. 12PCCh. 2 - Restaurant Bill Write a program that computes the...Ch. 2 - Male and Female Percentages Write a program that...Ch. 2 - Stock Commission Kathryn bought 600 shares of...Ch. 2 - Energy Drink Consumption A soft drink company...Ch. 2 - Ingredient Adjuster A cookie recipe calls for the...Ch. 2 - Word Game Write a program that plays a word game...Ch. 2 - Stock Transaction Program Last month Joe purchased...Ch. 2 - Planting Grapevines A vineyard owner is planting...Ch. 2 - Compound Interest When a bank account pays...
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