Java: An Introduction to Problem Solving and Programming (8th Edition)
8th Edition
ISBN: 9780134462035
Author: Walter Savitch
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 4, Problem 10PP
Holy digits Batman! The Riddler is planning his next caper somewhere on Pennsylvania Avenue. In his usual sporting fashion, he has left the address in the form of a puzzle. The address on Pennsylvania is a four-digit number where:
■ All four digits are different
■ The digit in the thousands place is three times the digit in the tens place
■ The number is odd
■ The sum of the digits is 27
Write a
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Python Coding-While Loops
(In PyCharm Community edition)
Create a while loop that SUMS up ALL the numbers given from an initial number and an ending number.
Example would be :
Input1 : What is the first number? 0
Input2 : What is the last number? 3
DO NOT SHOW but these are the computations inside the code : 0 + 1 + 2 + 3 = 6
This is the Output : The sum of all the number from 0 to 3, is 6
In the code you are going to use a total variable and add each additional time it runs through the loop to that total.
REMEMBER the assignment from the first unit of programming where we used this formula :
BUT you are going to create your own method using a while loop to emulate what formula accomplishes WITHOUT using this formula. The user will put in the first number and the last to be SUMMED - you will use the while loop to calculate all of the additions leading to the final number.
Problem Description
The hailstone sequence is defined as the integer sequence that results from manipulating a positive
integer value n as follows:
If n is even, divide it by 2 (using floor division)
• If n is odd, multiply it by 3 and then add 1
Repeat this process until you reach 1.
For example, starting with n = 5, we get the sequence 5, 16, 8, 4, 2, 1.
If n is 6, we get the sequence 6, 3, 10, 5, 16, 8, 4, 2, 1.
If n is 7, we get 7, 22, 11, 34, 17, 52, 26, 13, 40, 20, 10, 5, 16, 8, 4, 2, 1.
If n is 8, we get the sequence 8, 4, 2, 1.
As far as anyone can tell, this process will eventually reach 1 for any starting value, although
mathematicians have been unable to formally prove this property as of yet.
a. Write a Python function named hail () that takes a single integer argument. hail() should
print out the sequence of numbers generated by applying the process above to the function
parameter. This function does not return any value.
ID: A
Name:
ID: A
6. There are 32 students standing in a classroom. Two different algorithms are given for finding the average
height of the students.
Algorithm A
Step 1: All students stand.
gniwolldi odT
gaihnel vd
Step 2: A randomly selected student writes his or her height on a card and is seated.
Step 3: A randomly selected standing student adds his or her height to the value on the card, records the new
value on the card, and is seated. The previous value on the card is erased.
Step 4: Repeat step 3 until no students remain standing.
Step 5: The sum on the card is divided by 32. The result is given to the teacher.
Algorithm B
Step 1: All students stand.
Step 2: Each student is given a card. Each student writes his or her height on the card.
Step 3: Standing students form random pairs at the same time. Each pair adds the numbers written on their
cards and writes the result on one student's card; the other student is seated. The previous value on the card is
erased.
Step 4: Repeat…
Chapter 4 Solutions
Java: An Introduction to Problem Solving and Programming (8th Edition)
Ch. 4.1 - What output is produced by the following code? int...Ch. 4.1 - Can the body of a while loop execute zero times?...Ch. 4.1 - What output is produced by the following code? int...Ch. 4.1 - Revise the following code so that it uses a while...Ch. 4.1 - What output is produced by the following code? int...Ch. 4.1 - Imagine a program that reads the population of a...Ch. 4.1 - Prob. 7STQCh. 4.1 - What output is produced by the following code? int...Ch. 4.1 - What output is produced by the following code? for...Ch. 4.1 - What output is produced by the following code? for...
Ch. 4.1 - Prob. 11STQCh. 4.1 - Write a for statement that displays the even...Ch. 4.1 - Prob. 13STQCh. 4.2 - Write a Java loop that will display the phrase One...Ch. 4.2 - Write a Java loop that will set the variable...Ch. 4.2 - Write a Java loop that will read a list of numbers...Ch. 4.2 - What output is produced by the following code? for...Ch. 4.2 - What output is produced by the following code? for...Ch. 4.2 - What output is produced by the following code? for...Ch. 4.2 - Revise the loop shown in Listing 4.6 to use a...Ch. 4.2 - What is the bug in the code in the section Tracing...Ch. 4.2 - Add some suitable output statements to the...Ch. 4.2 - What is the bug in the code in the previous...Ch. 4.2 - Prob. 24STQCh. 4.2 - Suppose that you did not have assertion checking...Ch. 4.3 - Prob. 26STQCh. 4 - Write a fragment of code that will read words from...Ch. 4 - Develop an algorithm for computing the...Ch. 4 - Develop an algorithm for a simple game of guessing...Ch. 4 - Write a fragment of code that will compute the sum...Ch. 4 - Convert the following code so that it uses nested...Ch. 4 - Write a for statement to compute the sum 1 + 22 +...Ch. 4 - (Optional) Repeat the previous question, but use...Ch. 4 - Write a loop that will count the number of blank...Ch. 4 - Write a loop that will create a new string that is...Ch. 4 - Write a program that will compute statistics for...Ch. 4 - Suppose we attend a party. To be sociable, we will...Ch. 4 - Define an enumeration for each of the months in...Ch. 4 - Write a fragment of code that computes the final...Ch. 4 - Suppose that you work for a beverage company. The...Ch. 4 - Suppose that we want to compute the geometric mean...Ch. 4 - Prob. 16ECh. 4 - Create an applet that draws a pattern of circles...Ch. 4 - Prob. 18ECh. 4 - What does the following fragment of code display?...Ch. 4 - Repeat Practice Program 4 of Chapter 3, but use a...Ch. 4 - Write a program that implements your algorithm...Ch. 4 - Repeat Practice Program 5 of Chapter 3, but use a...Ch. 4 - Write a program to read a list of nonnegative...Ch. 4 - Write a program to read a list of exam scores...Ch. 4 - Combine the programs from Programming Projects 5...Ch. 4 - Write a program that simulates the Magic 8 Ball...Ch. 4 - Whats for dinner? Let the computer decide. Write a...Ch. 4 - Write a program that implements your algorithm...Ch. 4 - Prob. 2PPCh. 4 - Write a program that reads a bank account balance...Ch. 4 - Modify Programming Project 5 from Chapter 2 to...Ch. 4 - Write a program that asks the user to enter the...Ch. 4 - Write a program that simulates a bouncing ball by...Ch. 4 - You have three identical prizes to give away and a...Ch. 4 - Prob. 9PPCh. 4 - Holy digits Batman! The Riddler is planning his...Ch. 4 - Your country is at war and your enemies are using...Ch. 4 - Prob. 12PPCh. 4 - Prob. 13PPCh. 4 - Prob. 14PPCh. 4 - (Challenge) Repeat the previous project, but...Ch. 4 - Write a JavaFx application that displays a series...
Additional Engineering Textbook Solutions
Find more solutions based on key concepts
Write a program that acts as a simple printing calculator. The program should allow the user to type in express...
Programming in C
A) class DumbBell; { int weight; public: void set Weight(int); ) ; void setWeight(int w) { weight = w; } int ma...
Starting Out with C++: Early Objects
#include iostream using namespace std; Class Moon; { Private; double earthWeight; double moonWeight; Public; mo...
Starting Out with C++ from Control Structures to Objects (8th Edition)
Modify the Product_T table by adding an attribute QtyOnHand that can be used to track the finished goods invent...
Modern Database Management (12th Edition)
The ____________ is always transparent.
Web Development and Design Foundations with HTML5 (8th Edition)
Complete the following table by providing statements with combined assignment operators for the right-hand colu...
Starting Out with C++ from Control Structures to Objects (9th Edition)
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.Similar questions
- (Computation) A magic square is a square of numbers with N rows and N columns, in which each integer value from 1 to (N * N) appears exactly once, and the sum of each column, each row, and each diagonal is the same value. For example, Figure 7.21 shows a magic square in which N=3, and the sum of the rows, columns, and diagonals is 15. Write a program that constructs and displays a magic square for a given odd number N. This is the algorithm:arrow_forwardJAVA LANGUAGE PLS THANK YOU 3. Negative Allergy by CodeChum Admin Whole numbers are great, but I think we should also pay attention to decimal numbers, too. So, how about we make a program that involves a lot of decimals? Instructions: Continuously ask for floating point values (decimal numbers) using the do…while() loop, sum them all up, and store the total into one variable. The loop shall only terminate for the following reasons: A negative decimal number is inputted (but still included in the total sum) The total sum reaches 100.0 or more Instructions Continuously ask for floating point values (decimal numbers) using the do…while() loop, sum them all up, and store the total into one variable. The loop shall only terminate for the following reasons: A negative decimal number is inputted (but still included in the total sum) The total sum reaches 100.0 or more Input Multiple lines containing float number on each. 1.1 1.2 1.3 1.4 -1.0 Output A line…arrow_forwardPython In this exercise, you will create a program that reads words from the user until the user enters a blank line. After the user enters a blank line your program should display each word entered by the user exactly once. The words should be displayed in the same order that they were entered (they don't have to be sorted by their meaning). For example, if the user enters: firstsecondfirstthirdsecond then your program should display: firstsecondthirdarrow_forward
- Assume n is a positive integer. Consider the loop below: x := 0 for i:= 5 to 5n x = 2(x+i) - 7 next i There are the total number of operations performed in this loop is operations performed in each run of the loop and the loop runs times, soarrow_forwardUSING FOR LOOP1. Create a program that can print 1to 50 .2. Create a program that can print 50-13. Print your name 10 times4. Print the output using for loop: 2 4 6 8 10 12 14 16 18 205. Print the output using for loop: 3 6 9 12 15 18 21 -USED JAVA PROGRAMMING LANGUAGEarrow_forwardWrite a complete program to generate a username based on a user's first and last name. Part One: Get a Valid First and Last Name ask the user for and read in their first and last name use a loop to validate the first name: it must be at least one character long and it must start with a letter use a loop to validate the last name: it must not contain any spaces Hint: use a nested loop. The outer loop will iterate until there is valid input. The inner loop will check each character in the String to see if any of them are whitespace. Part Two: Generate a Username generate a two-digit random number (i.e., a random number between 10 and 99, inclusive) create a username that is the following data concatenated: the first letter of their first name in lower case the first five characters of their last name in lower case; if the name is shorter than five characters, use the whole last name the two-digit number output the username to the user Additional Coding Requirements code…arrow_forward
- On Thursday, November 4, 2021, Big Man Games wrote: Computer programs are great at computing mathematical formulas. Once the formula is properly encoded you can use the code as much as you want without reprogramming it and you can share it with non-programmers without any trouble. This lab is an example of such a formula. Once you program it you won’t have to worry about the area of a circle again. Write and test a program that computes the area of a circle. This program should request a number representing a radius as input from the user. Use the formula 3.14 × radius2 to compute the area. Tip: There are a couple of ways to code an exponent. Look in the Operators unit for help (and you can’t use an x for multiplication). Tip: You will need to use the float data type to compute the remainder. The output should explain the results. Don’t just print a number. Tip: For your print statement you will need to use the comma, “,”, or plus, “+” symbols to stitch your output together. (“The…arrow_forwardChapter 5B Exercise 1 - Extra Exercise - Holy Digits Holy digits Batman! The Riddler is planning his next caper somewhere on Pennsylvania Avenue. In his usual sporting fashion, he has left the address in the form of a puzzle. The address on Pennsylvania is a four-digit number where: All four digits are different The digit in the thousands place is three times the digit in the tens place The number is odd The sum of the digits is 27 Write a program that uses a loop (or loops) to find the address where the Riddler plans to strike.arrow_forwardQuadraticAA.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…arrow_forward
- LAB: Loops: Output range with increment of 10 Write a program that reads two integers as input, and outputs the first integer and subsequent increments of 10 as long as the value is less than or equal to the second integer. Ex: If the input is: -15 30 the output is: -15 -5 5 15 25 Ex: If the second integer is less than the first as in: 20 5 the output is: Second integer can't be less than the first. For coding simplicity, output a space after every integer, including the last.arrow_forwardpython The intent of this program is to manage a set of contacts. Each contact will have data associated with it: Id – number/integer First Name – string Last Name – string Age – number/integer Phone Number – string Email – string Anything else you’d like to add to make yours unique (can result in extra credit) Gender – character or string (m/f/o) Twitter ID, Facebook Id, etc You must allow the customer to do the following actions on the contact list: List all contacts Add contact Delete contact Edit contact Exit program You should leverage a database (PostgreSQL) to save everything to the DB and read from it. You should use classes for this assignment. This means you should have two classes: Contact – all the attributes/properties described above with appropriate constructor. Methods: Add (constructor - __init__(p_id, p_fname, p_lname, p_age, p_phone, p_email, p_gender) Edit Contact List (contact_list) – built on Python list (or creating one within the constructor), you…arrow_forwardThe Lottery Problem: • The lottery draws a number that is the winning number • The number should be between 0 and 999 • Have someone play • The person tells how many tickets they want • The person always does “quick pick” (let the computer pick the number for them) and gets one number between 0 and 999 for each ticket bought • The program reports how many tickets win of the ones bought • NOTE: A ticket “wins” if it matches the winning number previously chosen • Write working code with at least one function and one sub other than “main”arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
C++ for Engineers and ScientistsComputer ScienceISBN:9781133187844Author:Bronson, Gary J.Publisher:Course Technology Ptr
C++ Programming: From Problem Analysis to Program...Computer ScienceISBN:9781337102087Author:D. S. MalikPublisher:Cengage Learning
EBK JAVA PROGRAMMINGComputer ScienceISBN:9781337671385Author:FARRELLPublisher:CENGAGE LEARNING - CONSIGNMENT
C++ for Engineers and Scientists
Computer Science
ISBN:9781133187844
Author:Bronson, Gary J.
Publisher:Course Technology Ptr
C++ Programming: From Problem Analysis to Program...
Computer Science
ISBN:9781337102087
Author:D. S. Malik
Publisher:Cengage Learning
EBK JAVA PROGRAMMING
Computer Science
ISBN:9781337671385
Author:FARRELL
Publisher:CENGAGE LEARNING - CONSIGNMENT
Control Structures - while loop - do-while loop - for loop - Goto - break - continue statements; Author: EzEd Channel;https://www.youtube.com/watch?v=21l11_9Osd0;License: Standard YouTube License, CC-BY