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Leno4ka [110]
4 years ago
10

java The maximum-valued element of an integer-valued array can be recursively calculated as follows: If the array has a single e

lement, that is its maximum (note that a zero-sized array has no maximum) Otherwise, compare the first element with the maximum of the rest of the array-- whichever is larger is the maximum value. Write an int method named max that accepts an integer array, and the number of elements in the array and returns the largest value in the array. Assume the array has at least one element.
Computers and Technology
1 answer:
adoni [48]4 years ago
7 0

Answer:

see explaination

Explanation:

MaxArray.java

public class MaxArray{

public static void main(String[] args) {

int a[] = {1,2,5,4,3};

int max = max (a, 5);

System.out.println("Max value is "+max);

}

public static int max (int a[],int size){

if (size > 0) {

return Math.max(a[size-1], max(a, size-1));

} else {

return a[0];

}

}

}

Output:

MaxArray

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Answer:

I hope it will help you!

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3 years ago
Write a program that teaches arithmetic to a young child. The program tests addition and subtraction. In level 1, it tests only
Elenna [48]

Answer:

Explanation:

The following program is written in Java and creates three levels with the different set of randomly generated arithmetic problems. As the player goes getting more points they advance every 5 points to the next level.

import java.util.Random;

import java.util.Scanner;

class Main {

   private static Random random = new Random();

   private static Scanner in = new Scanner(System.in);

   static int points = 0;

   public static void main(String[] args) {

       while (true) {

           System.out.println(points);

           if (points < 5) {

               System.out.println("Starting Level 1");

               levelOne();

           } else if (points < 10) {

               System.out.println("Starting Level 2");

               levelTwo();

           } else if (points < 15) {

               System.out.println("Starting Level 3");

               levelThree();

           }

       }

   }

   public static boolean levelOne() {

       int numberOne = random.nextInt(10);

       int numberTwo = random.nextInt((10 - numberOne));

       int answer = numberOne + numberTwo;

       int count = 0;

       while (points < 5 && count < 2) {

           System.out.println("What is " + numberOne + " + " + numberTwo + "?: ");

           int userChoice = in.nextInt();

           if (userChoice == answer) {

               points += 1;

               levelOne();

           } else {

               count += 1;

           }

       }

       return false;

   }

   public static boolean levelTwo() {

       int numberOne = random.nextInt(10);

       int numberTwo = random.nextInt(10);

       int answer = numberOne + numberTwo;

       int count = 0;

       while (points < 10 && count < 2) {

           System.out.println("What is " + numberOne + " + " + numberTwo + "?: ");

           int userChoice = in.nextInt();

           if (userChoice == answer) {

               points += 1;

               levelTwo();

           } else {

               count += 1;

           }

       }

       return false;

   }

   public static boolean levelThree() {

       int numberOne = random.nextInt(10);

       int numberTwo = random.nextInt(10);

       int answer = numberOne - numberTwo;

       int count = 0;

       if (answer <= 0) {

           levelThree();

       }

       while (points < 15 && count < 2) {

           System.out.println("What is " + numberOne + " - " + numberTwo + "?: ");

           int userChoice = in.nextInt();

           if (userChoice == answer) {

               points += 1;

               levelThree();

           } else {

               count += 1;

           }

       }

       return false;

   }

}

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3 years ago
Write a class named Book that has fields to hold the following data: Title Author Year published ISBN number In the Book class,
Hatshy [7]

Answer:

public class Book {

   private String title;

   private String author;

   private int yearPublished;

   private long ISBN;

   //The Constructor for all the feilds

   public Book(String title, String author, int yearPublished, long ISBN) {

       this.title = title;

       this.author = author;

       this.yearPublished = yearPublished;

       this.ISBN = ISBN;

   }

   //Mutator methods (set) to Set values of all the fields

   public void setTitle(String title) {

       this.title = title;

   }

   public void setAuthor(String author) {

       this.author = author;

   }

   public void setYearPublished(int yearPublished) {

       this.yearPublished = yearPublished;

   }

   public void setISBN(long ISBN) {

       this.ISBN = ISBN;

   }

   //Accessor Methods (getters) for all the feilds

   public String getTitle() {

       return title;

   }

   public String getAuthor() {

       return author;

   }

   public int getYearPublished() {

       return yearPublished;

   }

   public long getISBN() {

       return ISBN;

   }

}

// The Demo Class creating three instances of this class

class BookDemo{

   public static void main(String[] args) {

       Book bookOne = new Book("The Lion and the Princess","David A.",2000,12334556);

       Book bookTwo = new Book ("Me and You", "Jane G.", 2001, 4567342);

       Book bookThree = new Book("together forever", "Baneely H.",2019,34666);

   }

}

Explanation:

  • Please pay attention to the comments provided in the solution
  • Using Java Programming Language
  • The class Book is created with the required fields
  • The constructor is created to initialize the values of the fields
  • Getter methods are created
  • Setter Methods are Created
  • A demo Class BookDemo that creates three objects of the Book class is the created (This can be in the same file as the Book class but cannot start with the keyword public or in a separate file with the keyword public class BookDemo)
  • Inside BookDemo class, three instances of the Book class are created and initialized.
3 0
3 years ago
A half-life is the amount of time it takes for a substance or entity to fall to half its original value. Caffeine has a half-lif
Elena L [17]

Answer:

// here is code in java.

import java.util.*;

class Solution

{

// main method of class

public static void main (String[] args) throws java.lang.Exception

{

   try{

    // declare variable

         double caffeine;

    // scanner object to read input from user

       Scanner scr=new Scanner(System.in);

       System.out.print("Enter the initial amount of caffeine:");

        // read the initial amount of caffeine

           caffeine=scr.nextDouble();

          // calculate amount of caffeine after 6,12,18 hours

          for(int i=1;i<=3;i++)

          {

               System.out.println("After "+ i*6+" hours:"+(caffeine/2)+" mg");

               // update the caffeine after every 6 hours

               caffeine=caffeine/2;

          }

                 

   }catch(Exception ex){

       return;}

}

}

Explanation:

Create a variable "caffeine" to store the initial amount of caffeine given by user. Run a loop for three time, it will calculate the amount of caffeine left after every 6 hours.First it will give the amount of caffeine left after 6 hours, then caffeine left after 12 hours and in last caffeine after 18 hours.

Output:

Enter the initial amount of caffeine:100

After6 hours:50.0 mg

After12 hours:25.0 mg

After18 hours:12.5 mg

8 0
4 years ago
In cell g6, enter a formula that calculates the discount rate for the off-peak rental price per day. for example, using the peak
Tresset [83]

The peak rentals  per day values are 149.95  

the off peak rentals per day values are 120.


formula must start with = because it is in excel

3 0
4 years ago
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