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
Question
Chapter 4, Problem 2PP
Program Plan Intro
Spell backwards
Program plan:
- • Include necessary header files.
- • Declare the class “Main”.
- • Define the “main()” function.
- ○ Declare the required variables.
- ○ The method “Scanner()” is used to get the input from the user.
- ○ Do the below steps till the condition “while(!response.equals("quit"))” is true.
- ■ Declare required variables.
- ■ Get a word from the user and store it in a variable “word”.
- ■ Create a character array.
- ■ Assign “word.charAt(0)” to “c”.
- ■ Loop through the length of the string “word”.
- • Assign each character to the character array’s index.
- • Assign the 1st character of “word” at the last position.
- ■ Convert the character array to a string and store that string to the variable “str2”.
- ■ Reverse the string “str2” using “for” loop.
- ■ Check if both the words “word” and “rev” are equal.
- • Print the positive message.
- ■ Else,
- • Print the negative message.
- ■ Ask whether the user wants to continue or not.
- ■ Check if the “response” is equal to “quit”.
- • Break the loop.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
AGU Computer Engineering Department created a new mathematical game that can be played with two people. In this game, you are given a list of random integers. At each round, the first player takes two numbers from the list and calculates the sum of these numbers. Then, the second player takes two numbers and makes the same calculation. The higher one is going to take the round and increment the score by 1. At the end of the game, who has the better score will win the game.
Here are the rules for the game:
There are always an even number of items on the list
There are two colors for the players: Green and Red
Green starts the game
At each round, green plays and then red plays
The player takes the first and the last numbers
The game can end Tie when the scores are the same.
The game will end when there is no element to take from the list
Your program will simulate the rounds and find out the winner, Green or Red or Tie. The input will be two lines.
Input Format…
AGU Computer Engineering Department created a new mathematical game that can be played with two people. In this game, you are given a list of random integers. At each round, the first player takes two numbers from the list and calculates the sum of these numbers. Then, the second player takes two numbers and makes the same calculation. The higher one is going to take the round and increment the score by 1. At the end of the game, who has the better score will win the game.
Here are the rules for the game:
There are always an even number of items on the list
There are two colors for the players: Green and Red
Green starts the game
At each round, green plays and then red plays
The player takes the first and the last numbers
The game can end Tie when the scores are the same.
The game will end when there is no element to take from the list
Your program on java will simulate the rounds and find out the winner, Green or Red or Tie. The input will be two lines.
Input…
An integer is called squarefree if it is not divisible by any perfect squares other than 1. For instance, 42 is squarefree because its divisors are 1, 2, 3, 6, 7, 21, and 42, and none of those numbers (except 1) is a perfect square. On the other hand, 45 is not squarefree because it is divisible by 9, which is a perfect square. Write an algorithm that asks the user to enter a positive integer n and tells them if it is squarefree or not.
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...
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
- You have a maze with obstacles and non-zero digits in it: 9+ 7 8 + 4 1 2 3 4 5 You can start from any square, walk in the maze, and finally stop at some square. Each step, you may only walk into one of the four neighbouring squares (up, down, left, right) and you cannot walk into obstacles or walk into a square more than once. When you finish, you can get a number by writing down the digits you encounter in the same order as you meet them. For example, you can get numbers 9784, 4832145, etc. The biggest number you can get is 791452384, shown in the picture above. Your task is to find the biggest mumber you can get. Input There will be at most 25 test cases. Each test begins with two integers R and C (2 < R,C < 15, R+C < 30), the number of rows and columns of the maze. The next R rows represent the maze. Each line contains exactly C characters (without leading or trailing spaces), each of them will be either # or one of the nine non-zero digits. There will be at least one non-obstacle…arrow_forwardGrocery List. When shopping for groceries, it's helpful to know how much it's going to cost you in advance - this helps you avoid an embarrassing situation in the check-out line. For this assignment, you're going to write a simple program that asks you for the name, quantity, and price of two grocery store items. It will then generate a grocery list for you, complete with the total price. (Later in the semester, we'll learn how to make a program that can create much larger lists, but we'll start small here). Call the file Assignment1B (with a file extension of .cpp, .cs or .java) Sample Output: What're you buying? Ice Cream How many? 2 What do they cost? 2.25 What else're you buying? Celery How many? 5 What do they cost? 1.74 Your list: Ice Cream (2) $2.25 ($4.50 total) Celery (5) $1.74 ($8.7 total) Total Cost: $14.2 using Java programmingarrow_forwardThe ideal gas law allows the calculation of volume of a gas given the pressure(P), amount of the gas (n), and the temperature (T). The equation is:V = nRT / PSince we only have used integer arithmetic, all numbers will be integer values with no decimal points. The constant R is 8.314 and will be specified as (8314/1000). This gives the same result. Implement the idea gas law program where the user is prompted for and enters values for n, T, and P, and V is calculated and printed out. Be careful to implement an accurate version of this program. Your program should include a proper and useful prompt for input, and print the results in a meaningful manner.arrow_forward
- PLEASE CODE IN PYTHON The Penny Pitch game is popular in amusement parks. Pennies are tossed onto a board that has certain areas marked with different prizes. For example: The prizes available on this board are puzzle, game, ball, poster, and doll. At the end of the game, if all of the squares that say BALL are covered by a penny, the player gets the ball. This is also true for the other prizes. The board is made up of 25 squares (5 x 5). Each prize appears on three randomly chosen squares so that 15 squares contain prizes.In Python, create a PennyPitch application that displays a Penny Pitch board (use [ and ] to indicate squares) with prizes randomly placed and then simulates ten pennies being randomly pitched onto the board. After the pennies have been pitched, the application should display a message indicating which prizes have been won, if any.arrow_forwardPalindrome Detector: a palindrome is any word, phrase, or sentence that reads the same forward and backward. Here are some well-known palindromes: Able was I, ere I saw Elba A man, a plan, a canal, panama Desserts, I stressed Kayak Write a Boolean method that uses recursion to determine whether a String argument is a palindrome. The method should return true if the argument reads the same forward and backward. Demonstrate the method in a program.arrow_forwardImplement the class Character The role should be “primary” or “secondary” all other values are not acceptable. Considercapital and small letters variance. The gender should be “m” or “M” for male or “f” or “F” for female. The age should be a positive value. The giveRaise method increase the salary of a character by a given percentage with amaximum salary of 10000. The toString method returns a string that describes the character. For example: [Elisabeth Kane, female, 35, primary,4500$] 2) Implement the class Play A Play can have at most 20 characters. The real number of characters is registered in nbOfCharacters and is updated automaticallywhen a new character is added. AddCharacter method adds a new character to the characters array and updates thenbOfCharacters value. The attribute nbPlay keeps track of the number of Plays created. The toString method returns a string description of the play including name, genre and thenames of all the characters.Example: [The Opera…arrow_forward
- It is given twelve balls of identical weight with the exception of one that is either heavier or lighter. Additionally, it is equipped with a dual-pan balance. Utilization of the balance in each instance You may place any number of the 12 balls on the left pan and the same number on the right pan, and then press a button to begin weighing; there are three potential outcomes: the weights are equal, the balls on the left are heavier, or the balls on the left are lighter. Create a technique for determining which ball is the odd one out and whether it is heavier or lighter than the others using the balance in the fewest feasible instances. Solve the issue of weighing 39 balls, one of which is known to be odd.arrow_forwardIn this assignment you will write a program that shows the valid moves of chess pieces. Your program will draw a board with 64 squares using the traditional layout, next ask the user to choose a move, and then, depending on the user's choice, redraw the board with the selected chess piece and its valid moves. Please see the examples of valid moves of chess pieces and the traditional chess board layout below:arrow_forwardcan you make it that it asks if the player wants to make the first selection or if they want to go second after theprogram moves.also once the game is over, the program should ask the user if they want to playagain. If so, clear the board and start the game. Otherwise, the programs exits.arrow_forward
- java Write a program that prompts the user to enter a point (x, y) and checks whether the point is within the rectangle centered at (0, 0) with width 10 and height 5. For example, (2, 2) is inside the rectangle and (6, 4) is outside the rectangle, as shown in the Figure. (Hint: A point is in the rectangle if its horizontal distance to (0, 0) is less than or equal to 10 / 2 and its vertical distance to (0, 0) is less than or equal to 5 / 2.) Here are sample runs of the program: Sample 1: Enter a point with two coordinates: 2 2 Point (2.0, 2.0) is in the rectangle Sample 2: Enter a point with two coordinates: 6 4 Point (6.0, 4.0) is not in the rectangle Analysis: (Describe the problem including input and output in your own words.) Design: (Describe the major steps for solving the problem.) Coding: (Go over your code step by step) Testing: (Describe how you test this program). In other words run your code with sample outputs.arrow_forwardMonte Carlo methods are a class of computational methods that rely on repeated random sampling to compute their results. In this problem, you will use the Monte Carlo method to estimate the temperature at an arbitrary point in a uniform solid. Specifically, we will consider the solid object shown below. The temperatures of all surfaces are 500 des F with the exception of the two shaded surfaces, which are at 0 deg F. Inputs to the program should be: 1. The number of random walkers. 2. The (x,,2) coordinates of the point at which the temperature is to be estimated. 3. Plot interval (eg., you may want 1,000,000 random walkers in the simulation but may want to plot after every 10,000). Output from the program should be: 1. A graph of the estimated temperature, plotted according to the plot interval 2. Numerical value of the estimated temperature.arrow_forwardComplete the following program that collects an input word from the keyboard and finds if the word is palindrome. A word is palindrome if the sequence of characters are the same from left-to-right and right-to-left, for example, "dad", "racecar" or "rotor" are all palindrome words because they can be read the same either forward or backward. word = input ("Enter a word: ") is palindrome = True i = -1 for if word[j] != word[i]: i = if not is palindrome: else: print ("word is palindrome") i+1 -1 len(word) is_palindrome = False jin word i-1 print ("word is not palindrome") jin range(len(word))arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Database System ConceptsComputer ScienceISBN:9780078022159Author:Abraham Silberschatz Professor, Henry F. Korth, S. SudarshanPublisher:McGraw-Hill EducationStarting Out with Python (4th Edition)Computer ScienceISBN:9780134444321Author:Tony GaddisPublisher:PEARSONDigital Fundamentals (11th Edition)Computer ScienceISBN:9780132737968Author:Thomas L. FloydPublisher:PEARSON
- C How to Program (8th Edition)Computer ScienceISBN:9780133976892Author:Paul J. Deitel, Harvey DeitelPublisher:PEARSONDatabase Systems: Design, Implementation, & Manag...Computer ScienceISBN:9781337627900Author:Carlos Coronel, Steven MorrisPublisher:Cengage LearningProgrammable Logic ControllersComputer ScienceISBN:9780073373843Author:Frank D. PetruzellaPublisher:McGraw-Hill Education
Database System Concepts
Computer Science
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:McGraw-Hill Education
Starting Out with Python (4th Edition)
Computer Science
ISBN:9780134444321
Author:Tony Gaddis
Publisher:PEARSON
Digital Fundamentals (11th Edition)
Computer Science
ISBN:9780132737968
Author:Thomas L. Floyd
Publisher:PEARSON
C How to Program (8th Edition)
Computer Science
ISBN:9780133976892
Author:Paul J. Deitel, Harvey Deitel
Publisher:PEARSON
Database Systems: Design, Implementation, & Manag...
Computer Science
ISBN:9781337627900
Author:Carlos Coronel, Steven Morris
Publisher:Cengage Learning
Programmable Logic Controllers
Computer Science
ISBN:9780073373843
Author:Frank D. Petruzella
Publisher:McGraw-Hill Education