Java | JSP | JSF Answers

Write an algorithm to delete a node at end of the doubly linked list and create the logic for the same

Write algorithm to perform insert and delete operations in a linear queue and implement the logic for the same

Write a function that accepts an integer argument and checks if the number is

prime. Write a function that keeps count of number of times it’s been invoked

import java.util.*;

class App {

public static void main(String[] args) {

Scanner in = new Scanner(System.in);

System.out.println("Enter a String: ");

String string = in.nextLine().toLowerCase();

System.out.print("Enter character to find: ");

String characterFind = in.nextLine().toLowerCase();

int index = string.indexOf(characterFind);

System.out.print("Index Position: ");

while (index >= 0) {

System.out.print(index + " ");

index = string.indexOf(characterFind, index + 1);

}

in.close();

}

}

Do this coding without using characterFind, Array, Array functions, split

2.2

(Convert Celsius to Fahrenheit) Write a program that reads a Celsius degree in

a double value from the console, then converts it to Fahrenheit and displays the

result. The formula for the conversion is as follows:

fahrenheit = (9 / 5) * celsius + 32

Hint: In Java, 9 / 5 is 1, but 9.0 / 5 is 1.8.

Here is a sample run:

Enter a degree in Celsius: 43

43 Celsius is 109.4 Fahrenheit

(Compute the volume of a cylinder) Write a program that reads in the radius

and length of a cylinder and computes the area and volume using the following

formulas:

area = radius * radius

* TT

volume = area * length

Here is a sample run:

Enter the radius and length of a cylinder: 5.5 12 Enter

The area is 95.0331

The volume is 1140.4

given the following code what is the value of cities[3]

String cities[] = new String[5];

  cities[0] = "North bay";

  cities[1] = "Windsor";

  cities[2] = "Kitchener";

  cities[3] = "Kingston";

  cities[4] = "Ottawa";

Given the following How many elements are in the array die3

 int die1[] = {1,0,2,0,3,1};

 int die2[] = {2,1,0,4,0,3};

 int die3[] = {3,0,3,0,3,4};

 int die4[] = {2,0,1,0,3,5};

 int die5[] = {1,0,2,0,3,4};

 int die6[] = {4,0,1,2,3,2};

  int dice[][] = {die1,die2,die3,die4,die5,die6};

Create a Java program named PE2Lastname. (ex. PE2Dela_Cruz)

Construct a simple purchasing program based on the UML Class Diagram below.

The (-) symbol represents private variables, while(+) represent public.

PE2Lastname

-itemName: String

-itemPrice:double

-itemQuantity:int

-amountDue:double

+setItemName(String newItemName): void

+setTotalCost(int quantity, double price): void

+getItemName(): String

getTotalCost(): double

+readInput(): void

+writeOutput():void

Note: The readInput() method will be used to accept user input through the Scanner

class. This is done by doing the following:

a.

Importing Scanner from the java.util package.

b.

Instantiating an object of the Scanner class, Scanner s = new

Scanner(System.in);

c.

Storing the input to the variable name based on data type:

a.

For String: s.nextLine()

b.

For int: s.nextInt()

c.

For double: s.nextDouble()

d.

c) The Rectangle class contains:

• Two instance variables width (double) and length (double).

• Three constructors as shown. The no-arg constructor initializes the width and length to 1.0.

• Getter and setter for all the instance variables.

• Methods getArea() and getPerimeter().

• Override the inherited toString() method, to return "A Rectangle with width=xxx and length=zzz, which is a subclass of yyy", where yyy is the output of the toString() method from the superclass.