Concept explainers
Challenge exercise Write a method isPrime (int n) that returns true if the parameter n is a prime number, and false if it is not. To implement the method, you can write a while loop that divides n by all numbers between 2 and
Trending nowThis is a popular solution!
Chapter 4 Solutions
Objects First with Java: A Practical Introduction Using BlueJ (6th Edition)
Additional Engineering Textbook Solutions
Java How to Program, Early Objects (11th Edition) (Deitel: How to Program)
Problem Solving with C++ (9th Edition)
Java How To Program (Early Objects)
Software Engineering (10th Edition)
Computer Systems: A Programmer's Perspective (3rd Edition)
Starting Out with Java: From Control Structures through Data Structures (3rd Edition)
- Note that you can only use recursion to solve Q1 and you cannot use any loop. You are free to add helper methods, but you are not allowed to change the method header.Question 1: Crazy seriesIn this session, you need to implement the crazy series method. In the crazy series, you will be given a starting number. Then, you need to times 2 for each number until the number is greater than 100. After the number is greater than 100, you need to divide 3 until we reach the number is less than 5. Note that the input number must be greater than 0, and you are not allowed to use loop here.For example,crazySeries(10) should return ArrayList [10.0, 20.0, 40.0, 80.0, 160.0, 53.333333333333336, 17.77777777777778, 5.9259259259259265, 1.9753086419753088]crazySeries(5) should return ArrayList [5.0, 10.0, 20.0, 40.0, 80.0, 160.0, 53.333333333333336, 17.77777777777778, 5.9259259259259265, 1.9753086419753088]crazySeries(1) should return ArrayList [1.0, 2.0, 4.0, 8.0, 16.0, 32.0, 64.0, 128.0,…arrow_forward: In the classic problem FizzBuzz, you are told to print the numbers from 1 to n. However,when the number is divisible by 3, print "Fizz''. When it is divisible by 5, print "Buzz''. When it isdivisible by 3 and 5, print"FizzBuzz''. In this problem, you are asked to do this in a multithreaded way.Implement a multithreaded version of FizzBuzz with four threads. One thread checks for divisibilityof 3 and prints"Fizz''. Another thread is responsible for divisibility of 5 and prints"Buzz''. A third threadis responsible for divisibility of 3 and 5 and prints "FizzBuzz''. A fourth thread does the numbers.arrow_forwardLoad your bag with some initial values, but do not fill it. Your client code should give the user the option to: display the contents of the bag using the class method “toVector” add values to the bag remove values from the bag sort the bag search for a value using their choice of either the iterative search or the recursive search - both need to be tested Allow the user to keep doing these things until they are done. Do not automatically sort the bag if the user chooses to search. Your program should give the user a message telling them they must first sort the bag before they can search.You decide what the user interface will be. Make it clear and easy to use. It can be very basic; nothing fancy. A menu driven program works well. Each value in your array should be unique - no value will appear in the array multiple times. Your array elements can be any data type – use a template class put in place in the code provided. You can write your client code to process a bag holding any…arrow_forward
- Complete the convert() method that casts the parameter from a double to an integer and return Note that the main() method prints out the returned value of the convert() method. Ex: If the double value is 19.9, then the output is: 19 Ex: If the double value is 3.1, then the output is: 3 512334.3517088.qx3zqy7 LAB ACTIVITY 1 public class LabProgram { 2 NM & in 3 public static int convert(double d) { /* Type your code here */ 4 5 6 7 } 25.20.1: LAB: Write convert() method to cast double to int 8 public static void main(String[] args) { System.out.println(convert (19.9)); System.out.println(convert(3.1)); 00 00 9 10 11 } 12 } LabProgram.javaarrow_forwardUsing a single for loop, write code that prints by 5s from 0 to 100. Your code should also print “DONE” at the end (as shown below). All of the output should print on the same line. Include spacing. Assume this code will run inside of the main method. Do not define any classes or methods. You may only use techniques and data structures that have already been covered in this class. The output of your code should look like this: 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 DONEarrow_forwardBuild a simple guessing game where it will continuously ask the user to enter a number between 1 and 10. If the user's guesses matched, the user will score 10 points, and display the score. If the users' guess doesn’t match display the generated number. Also, if the user enters “q” then stop the game. my code till now. Please modify my code so that it works. import randomgame(num)if n=='q': def game(n): n= int(input("Enter a number between 1 and 10 ")) print("You entered:",n)r = random.randint(1,10)print("Random number is: ", r)score=0if n==r:print("You won!")print(" Your score: " ,score+10)else:print("You lost! Try again")arrow_forward
- Java Script There is a single operator in JavaScript, capable of providing the remainder of a division operation. Two numbers are passed as parameters. The first parameter divided by the second parameter will have a remainder, possibly zero. Return that value. Examples remainder(1, 3) → 1 remainder(3, 4) → 3 remainder(-9, 45) → -9 remainder(5, 5) → 0 Notes The tests only use positive and negative integers. Don't forget to return the result.arrow_forwardUsing a single for loop, write code that prints by 5s from 0 to 100. Your code should also print “DONE” at the end (as shown below). All of the output should print on the same line. Include spacing. Assume this code will run inside of the main method. Do not define any classes or methods. You may only use techniques and data structures that have already been covered in this class. The output of your code should look like this: 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 DONE in javaarrow_forwardGiven a list of integers, you want to know whether it is possible to divide the integers into two sets, so that the sum of one set is odd, and the sum of the other set is a multiple of 10. Every integer must be in one set or the other. You can write a recursive helper method that takes any number of arguments and then call it inside the method, but you cannot use any loops. Test cases: oddAndTen([5, 5, 3]) true oddAndTen ([5, 5, 4]) oddAndTen ([5, 5, 4, 1]) false truearrow_forward
- Exercise PrintTriangles: Write a method to print each of the following patterns using nested-loops in a class called PrintTriangles. The program shall prompt user for the numRows. The signatures of the methods are: public static void printXxxTriangle(int numRows) // Xxx is the pattern's name 1 1 2 1 1 2 4 2 1 1 2 4 8 4 2 1 1 2 4 8 16 8 4 2 1 1 2 4 8 16 32 16 8 4 2 1 1 2 4 8 16 32 64 32 16 8 4 2 1 1 2 4 8 16 32 64 128 64 32 16 8 4 2 1 (a) PowerOf2Triangle 1 1 1 1 1 1 1 2 1 1 2 1 1 3 3 1 1 3 3 1 1 4 6 4 1 1 4 6 4 1 1 5 10 10 5 1 1 5 10 10 5 1 1 6 15 20 15 6 1 1 6 15…arrow_forwardComplete the convert() method that casts the parameter from a double to an integer and returns the result.Note that the main() method prints out the returned value of the convert() method. Ex: If the double value is 19.9, then the output is: 19 Ex: If the double value is 3.1, then the output is: 3 code: public class LabProgram { public static int convert(double d){ /* Type your code here */ } public static void main(String[] args) { System.out.println(convert(19.9)); System.out.println(convert(3.1)); }}arrow_forwardIn computational geometry, often you needto find the rightmost lowest point in a set of points. Write the following methodthat returns the rightmost lowest point in a set of points:public static double[]getRightmostLowestPoint(double[][] points)Write a test program that prompts the user to enter the coordinates of six pointsand displays the rightmost lowest point. Here is a sample run: Enter 6 points: 1.5 2.5 −3 4.5 5.6 −7 6.5 −7 8 1 10 2.5 ↵EnterThe rightmost lowest point is (6.5, −7.0)arrow_forward
- 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