Create an application named TestClassifiedAd that instantiates and displays at least two ClassifiedAd objects. A ClassifiedAd has fields for a Category (For example, Used Cars and Help Wanted), a number of Words, and a price. Include properties that contain get and set accessors for the category and number of words, but only a get accessor for the price. The price is calculated at nine cents per word.
Answers
Answer:
Following is given the code with all necessary descriptions as comments in it. The output is also attached under the code. I hope it will help you!
Explanation:
```csharp
using System;
class ClassifiedAd
{
// Fields
private string category;
private int numberOfWords;
// Properties
public string Category
{
get { return category; }
set { category = value; }
}
public int NumberOfWords
{
get { return numberOfWords; }
set { numberOfWords = value; }
}
public double Price
{
get { return numberOfWords * 0.09; } // Price calculated at nine cents per word
}
}
class TestClassifiedAd
{
static void Main(string[] args)
{
// Instantiate ClassifiedAd objects
ClassifiedAd ad1 = new ClassifiedAd();
ad1.Category = "Used Cars";
ad1.NumberOfWords = 50;
ClassifiedAd ad2 = new ClassifiedAd();
ad2.Category = "Help Wanted";
ad2.NumberOfWords = 80;
// Display information about the ClassifiedAd objects
Console.WriteLine("Classified Ad 1:");
Console.WriteLine($"Category: {ad1.Category}");
Console.WriteLine($"Number of Words: {ad1.NumberOfWords}");
Console.WriteLine($"Price: ${ad1.Price}");
Console.WriteLine("\nClassified Ad 2:");
Console.WriteLine($"Category: {ad2.Category}");
Console.WriteLine($"Number of Words: {ad2.NumberOfWords}");
Console.WriteLine($"Price: ${ad2.Price}");
}
}
```
1. ClassifiedAd Class:
- This class represents a classified advertisement with three fields: `category`, `numberOfWords`, and a private field `price` (which is calculated internally).
- Properties:
- `Category`: This property has both a getter (`get`) and a setter (`set`) to allow getting and setting the category of the advertisement.
- `NumberOfWords`: Similarly, this property has both a getter and a setter for getting and setting the number of words in the advertisement.
- `Price`: This property only has a getter (`get`). It calculates the price based on the number of words (`numberOfWords * 0.09`), where each word costs nine cents.
2. TestClassifiedAd Class:
- This is the main application class that demonstrates the use of `ClassifiedAd` objects.
- Main Method:
- It instantiates two `ClassifiedAd` objects (`ad1` and `ad2`) and assigns values to their properties (`Category` and `NumberOfWords`).
- It then prints out information about each `ClassifiedAd` object:
- Displays the category using `ad1.Category` and `ad2.Category`.
- Displays the number of words using `ad1.NumberOfWords` and `ad2.NumberOfWords`.
- Displays the calculated price using `ad1.Price` and `ad2.Price`.
3. Execution:
- When you run the `TestClassifiedAd` application, it will output the category, number of words, and price for each of the two `ClassifiedAd` objects that were instantiated and configured.
4. Purpose:
- This code demonstrates basic object-oriented principles such as encapsulation (using properties to access fields), calculation within properties, and object instantiation and usage in a simple console application.
Overall, the `ClassifiedAd` class encapsulates the data and behavior related to a classified advertisement, and the `TestClassifiedAd` application showcases the instantiation and usage of these objects with specific examples.
Related Questions
Input a number [1-50] representing the size of the shape and then a character [x,b,f] which represents the shape i.e. x->cross, b->backward slash, or f->forward slash. Here are 4 examples which give the 2 inputs with the shape of the result directly below. Note: Even number outputs are different from odd.
Answers
Answer:
C++ code given below with appropriate comments
Explanation:
pattern.cpp
#include<iostream>
using namespace std;
void printCross(int n)
{
int i,j,k;
if(n%2) //odd number of lines
{
for(int i=n;i>=1;i--)
{
for(int j=n;j>=1;j--)
{
if(j==i || j==(n-i+1))
cout<<j;
else
cout<<" ";
}
cout<<"\n";
}
}
else //even number of lines
{
for(int i=1;i<=n;i++)
{
for(int j=1;j<=n;j++)
{
if(j==i || j==(n-i+1))
{
cout<<" "<<j<<" ";
}
else
cout<<" ";
}
cout<<"\n";
}
}
}
void printForwardSlash(int n)
{
if(n%2)
{
for(int i=n;i>=1;i--)
{
for(int j=n;j>=1;j--)
{
if(j==n-i+1)
{
cout<<j;
}
else
cout<<" ";
}
cout<<"\n";
}
}
else
{
for(int i=1;i<=n;i++)
{
for(int j=1;j<=n;j++)
{
if(j==(n-i+1))
{
cout<<j;
}
else
cout<<" ";
}
cout<<"\n";
}
}
}
void printBackwardSlash(int n)
{
if(n%2) // odd number of lines
{
for(int i=n;i>=1;i--)
{
for(int j=n;j>=1;j--)
{
if(j==i)
{
cout<<j;
}
else
cout<<" ";
}
cout<<"\n";
}
}
else //even number of lines
{
for(int i=1;i<=n;i++)
{
for(int j=1;j<=n;j++)
{
if(j==i)
{
cout<<j;
}
else
cout<<" ";
}
cout<<"\n";
}
}
}
int main()
{
int num;
char ch;
cout<<"Create a numberes shape that can be sized."<<endl;
cout<<"Input an integer [1,50] and a character [x,b,f]."<<endl;
cin>>num>>ch;
if(ch=='x' || ch=='X')
printCross(num);
else if(ch=='f' || ch=='F')
printForwardSlash(num);
else if(ch=='b' || ch=='B')
printBackwardSlash(num);
else
cout<<"\nWrong input"<<endl;
return 0;
}
rite a method so that the main() code below can be replaced by simpler code that calls method calcMilesTraveled(). Original main(): public class CalcMiles { public static void main(String [] args) { double milesPerHour
Answers
Complete Question
Write a method so that the main() code below can be replaced by the simpler code that calls method calcMiles() traveled.
Original main():
public class Calcmiles {
public static void main(string [] args) {
double milesperhour = 70.0;
double minutestraveled = 100.0;
double hourstraveled;
double milestraveled;
hourstraveled = minutestraveled / 60.0;
milestraveled = hourstraveled * milesperhour;
System.out.println("miles: " + milestraveled); } }
Answer:
import java.util.Scanner;
public class CalcMiles
{
public double CalculateMiles (double miles, double minutes)
{ //Method CalculateMiles defined above
//Declare required variables.
double hours = 0.0;
double mile = 0.0;
//Calculate the hours travelled and miles travelled.
hours = minutes / 60.0;
mile = hours * miles;
//The total miles travelled in return.
return mile;
}
public static void main(String [] args)
{
double milesPerHour = 70.0;
double minsTravelled = 100.0;
CalculateMiles timetraveles = new CalculateMiles();
System.out.println("Miles: " + timetravels.CalculateMiles(milesPerHour, minsTraveled));
}
}
//End of Program
//Program was written in Java
//Comments are used to explain some lines
Read more on Brainly.com - https://brainly.com/question/9409412#readmore
Often an extension of a memorandum of understanding (MOU), the blanket purchase agreement (BPA) serves as an agreement that documents the technical requirements of interconnected assets.a. Trueb. False
Answers
Answer:
FALSE
Explanation:
The blanket purchase agreement (BPA) can not serves as an agreement that documents the technical requirements of interconnected assets but the Interconnection service agreement (ISA).
A customer contacts the help disk stating a laptop does not remain charged for more than 30 minutes and will not charge more than 15%. Which of the following components are the MOST likely causes the issue? (Select three.)A. LCD power inverterB. AC adapterC. BatteryD. ProcessorE. VGA cardF. MotherboardG. Backlit keyboardH. Wireless antenna
Answers
Answer:
Option A, Option B, and Option C are the correct options.
Explanation:
The following options are correct because when any person is facing a problem related to its laptop and he wanted to contact with the customer service agent to solve his problem of the Laptop that is his Laptop battery does not work more than the half-hour and his Laptop's battery not charge more than 15%.
So, his laptop will be facing the problems related to Battery, LCD power inverter, or AC adapter.
Write a while loop that prints userNum divided by 2 (integer division) until reaching 1. Follow each number by a space.
Answers
Answer:
while(userNum>=1){
System.out.print(userNum/2+" ");
userNum--;
}
Explanation:
This is implemented in Java programming language. Below is a complete code which prompts a user for the number, receives and stores this number in the variable userNum.
import java.util.Scanner;
public class TestClock {
public static void main(String[] args) {
Scanner in = new Scanner (System.in);
System.out.println("Enter the number");
int userNum = in.nextInt();
while(userNum>=1){
System.out.print(userNum/2+" ");
userNum--;
}
}
}
The condition for the while statement is userNum>=1 and after each iteration we subtract 1 from the value of userNum until reaching 1 (Hence userNum>=1)
Consider a compact disc on which the pits used to store the digital information measure 850 nm long by 500 nm wide. Visible light has the following wavelengths: 380–420 nm for violet; 420–440 nm for indigo; 440–500 nm for blue; 500–520 nm for cyan; 520–565 nm for green; 565–590 nm for yellow; 590–625 nm for orange; and 625–740 nm for red. Which of these colors, if any, could be used for building the pits on the disc?
Answers
Final answer:
Suitable colors for building the pits on a compact disc, based on their wavelengths compared to pit dimensions, are violet, indigo, blue, and cyan. Green, yellow, orange, and red are unsuitable due to their longer wavelengths.
Explanation:
To determine which colors from the visible spectrum could be used for building the pits on a compact disc, we must consider the wavelength of light compared to the size of the pits. The pits on the disc measure 850 nm long by 500 nm wide. Visible light has wavelengths that range from approximately 400 nm for violet to 740 nm for red.
Based on this, colors that have a wavelength shorter than the size of the pits can be used to read the information. Using longer wavelengths would lead to diffraction and an inability to resolve the individual pits. Therefore, the suitable colors consist of violet, indigo, blue, and cyan, as their wavelengths are all shorter than or close to the dimensions of the pits. Green, yellow, orange, and red have wavelengths that are too long to be used effectively for this purpose.
It should be noted that CD technology specifically uses light with a wavelength of 780 nm, DVDs use 650 nm, and Blu-ray discs use 405 nm, indicating that different types of optical media require specific wavelengths of light based on the size of the pits and the spacing between them.
Among the following two algorithms, which is the best for evaluating f(x) = tan(x) - sin(x) for x ∼ 0? Briefly explain.
(a) (1/cos(x)−1) sin (x),
(b) tan (x) sin^2 (x) / (cos(x) + 1).
Answers
Answer:
Option B: tan (x) sin^2 (x) / (cos(x) + 1). is best.
Following is attached the image describing the reason or choosing option B.
Explanation:
Outputting all combinations. Output all combinations of character variables a, b, and c using this ordering abc acb bac bca cab cba.
If a = 'x', b = 'y', and c = 'z', then the output is: xyz xzy yxz yzx zxy zyx
Your code will be tested in three different programs, with a, b, c assigned with 'x', 'y', 'z', then with '#', '$', '%', then with '1', '2', '3'.
#include
using namespace std;
int main()
{
char a; char b; char c;
cin >> a; cin >> b; cin >> c;
/* Your solution goes here */
cout << endl;
return 0;
}
Answers
Answer:
#include<iostream>
using namespace std;
int main()
{
char a;
char b;
char c;
cin >> a;
cin >> b;
cin >> c;
cout<<a<<b<<c<<endl;
cout<<a<<c<<b<<endl;
cout<<b<<a<<c<<endl;
cout<<b<<c<<a<<endl;
cout<<c<<a<<b<<endl;
cout<<c<<b<<a<<endl;
cout << endl;
}
Explanation:
Note: code is hard coded it does not contain any logic based coding
The C++ program requires concatenation of character variables a, b, and c in specific patterns to output all combinations. The provided code snippet correctly orders and outputs all permutations of these characters, which fulfills the task requirements.
Explanation:The task is to create a C++ program that outputs all combinations of three character variables in a specified order. The student is asked to write the code that would display every permutation of the variables a, b, and c. To achieve this, the code within the main function should directly output the combinations by concatenating the variables in the correct sequence using cout.
Here's the solution for the main part of your code:
cout << a << b << c << ' ';cout << a << c << b << ' ';
cout << b << a << c << ' ';
cout << b << c << a << ' ';
cout << c << a << b << ' ';
cout << c << b << a << ' ';
When you input 'x', 'y', 'z' as the values for a, b, and c, respectively, the output will be: xyz xzy yxz yzx zxy zyx. This code will generate the correct combinations for any set of three unique characters provided at the input.
When troubleshooting a computer, why might you have to enter the BIOS/UEFI setup? list 3 reasons
Answers
Answer:
Explanation:
1. If we enter to the BIOS we can enable or disable components, we can find the issue with this option.
2. In the BIOS we can set or reset power-on passwords, this option is really important to administrate our access and passwords.
3. We can change the date and time of the system, some troubles are only for that.
Users in PLABS require support for remote logins via VPN to the Active Directory domain controllers using Kerberos and LDAP. Which port or ports need to be opened to support this functionality?a. 389
b. 445
c. 139
d. 443
e. 88
f. 636
Answers
To enable remote VPN logins to Active Directory domain controllers using Kerberos and LDAP, you must open ports389 and 88 for LDAP and Kerberos, respectively, and port 636 if secure LDAP is used.
To support remote logins via VPN to the Active Directory domain controllers using Kerberos and LDAP, specific ports need to be opened to facilitate this functionality. For LDAP, you would typically need to open port 389 for standard LDAP communications or port 636 if you require secure LDAP (LDAPS) over SSL/TLS. Kerberos, which is an authentication protocol that Active Directory uses, typically runs on port 88. Therefore, to support VPN remote logins to AD domain controllers, ports 389, 636, and 88 are necessary to be opened in your firewall.
Compare userNumber with compareNumber and display 'Numbers are not equal' if the numbers are different. Then, display 'Variables are not identical' if the variables are not identical (not strictly equal).
Answers
To compare the values of compareNumber and userNumber and display the appropriate message, one need to use the strict equality operator (==).
So, The current code is using the loose equality operator (===), which compares both the values and the types of the operands.
In the case of 3 and "3", they are considered equal using the strict equality operator, but not using the loose equality operator.
Below is the code to compare the values using the strict equality operator is:
JavaScript
let compareNumber = 3; // Code will be tested with: 3, 8, 42
let userNumber = '3'; // Code will be tested with: '3', 8, 'Hi'
if (compareNumber === userNumber) {
console.log('Variables are identical');
} else if (compareNumber == userNumber) {
console.log('Numbers are equal');
} else {
console.log('Numbers are not equal');
}
See text below
Compare userNumber with compareNumber and display 'Numbers are not equal' if the numbers are different. Then, display 'Variables are identical' if the variables are identical (strictly equal).
Code provided to complete the assignment:
let compareNumber = 3; // Code will be tested with: 3, 8, 42
let userNumber = '3'; // Code will be tested with: '3', 8, 'Hi'
Code I have so far:
if (compareNumber === userNumber){
console.log("Variables are identical");
}
else{
if (compareNumber == userNumber){
}
console.log("Numbers are not equal");
}
Results:
✖
Testing log when compareNumber = 3 and userNumber = "3"
Yours and expected differ. See highlights below.
Yours
Numbers are not equal
Expected
Expected no output
Testing log when compareNumber = 8 and userNumber = 8
Yours
Variables are identical
Testing log when compareNumber = 42 and userNumber = "Hi"
Yours
Numbers are not equal
In Java; Given numRows and numColumns, print a list of all seats in a theater. Rows are numbered, columns lettered, as in 1A or 3E. Print a space after each seat, including after the last. Use separate print statements to print the row and column. Ex: numRows = 2 and numColumns = 3 prints:1A 1B 1C 2A 2B 2C import java.util.Scanner;public class NestedLoops {public static void main (String [] args) {Scanner scnr = new Scanner(System.in);int numRows;int numColumns;int currentRow;int currentColumn;char currentColumnLetter;numRows = scnr.nextInt();numColumns = scnr.nextInt();numColumns = currentColumnLetterfor(currentRow = 0; currentRow < numRows;currentRow++){for(currentColumn = =System.out.println("");}}
Answers
Answer:
The solution code is written in Java.
import java.util.Scanner; public class Main { public static void main(String[] args) { String letters[] = {"A", "B", "C", "D", "E", "F", "G", "H", "I", "J"}; Scanner scnr = new Scanner(System.in); int numRows; int numColumns; int currentRow; int currentColumn; numRows = scnr.nextInt(); numColumns = scnr.nextInt(); for(currentRow = 0; currentRow < numRows;currentRow++){ for(currentColumn =0; currentColumn < numColumns; currentColumn++) { System.out.print((currentRow + 1) + letters[currentColumn] + " "); } } } }Explanation:
Firstly, we need to create an array to hold a list of letters (Line 6). In this solution, only letters A - J are given for simplicity.
Next, we declare all the variables that we need, numRows, numColumns, currentRow and currentColumn (Line 8 - 11).
Next, we use Scanner object, scnr to prompt user to input integer for numRows and numColumns (Line 12-13).
At last, we use two-layer for loops to traverse through the number of rows and columns and print out the currentRow and currentColumn (Line 15-19). Please note the currentRow is added by 1 as the currentRow started with 0. To print the letter, we use currentColumn as an index to take out the letter from the array.
You will be given a grocery list, followed by a sequence of items that have already been purchased. You are going to determine which items remain on the the list and output them so that you know what to buy.
You will be give an integer n that describes how many items are on the original grocery list. Following that, you will be given a list of n grocery list items (strings) that you need to buy. After your grocery list is complete, you will receive a list of items that had already been purchased. For each of these items, if it matches any item on your grocery list, you can mark that item as purchased. You will know that you are at the end of the list of items already purchased when you receive the string "DONE".
At that point, you will output a list of items left to buy (each item on its own line).
Write the body of the program.
Details
Input
The program reads the following:
an integer, n, defining the length of the original grocery list
n strings that make up the grocery list
a list of items that had already been purchased (strings)
the string "DONE", marking the end of all required input
Processing
Determine which items on the grocery list have already been purchased.
Answers
Answer:
Following is attached the code as well as the output according to the requirements. I hope it will help you!
Explanation:
In the case of a security incident response, the Building and Implementing a Successful Information Security Policy whitepaper cautions that __________ is often critical in limiting the damage caused by an attack.
Answers
Answer:
Risk management.
Explanation:
Information security policy is a documented set of rules and regulations to prevent cyber attacks and exposure to company information. It entails risk analyses, management, violation and implementation.
A information security officer is obligated to document these policies and disseminate the message to all the employees of the company.
Risk management processes like physical or desktop security and internet threat security is critical in mitigating damage and attacks.
3.14 LAB: Input and formatted output: Caffeine levels 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-life of about 6 hours in humans. Given caffeine amount (in mg) as input, output the caffeine level after 6, 12, and 24 hours. Use a string formatting expression with conversion specifiers to output the caffeine amount as floating-point numbers.
Answers
Final answer:
To calculate the caffeine level after a certain number of half-lives, use the formula: Caffeine level = Initial caffeine amount * (0.5)^(number of half-lives).
Explanation:
The caffeine level after 6, 12, and 24 hours can be calculated using the concept of half-life. The half-life of caffeine in humans is about 6 hours, which means that after every 6 hours, the amount of caffeine is reduced by half. To calculate the caffeine level after a certain number of half-lives, you can use the formula:
Caffeine level = Initial caffeine amount * (0.5)^(number of half-lives)
For example, if the initial caffeine amount is 200 mg, the caffeine level after 6 hours would be 200 * (0.5)^(6/6) = 100 mg, after 12 hours would be 200 * (0.5)^(12/6) = 50 mg, and after 24 hours would be 200 * (0.5)^(24/6) = 25 mg. Keep in mind that this is a simplified model and real-world factors may affect the actual caffeine levels.
Final answer:
To calculate the caffeine levels after a certain amount of time has passed, you can use the formula: final amount = initial amount × (1/2)^(number of half-lives).
Explanation:
The question is asking for the caffeine levels after a certain amount of time has passed. The half-life of caffeine is about 6 hours in humans. To calculate the caffeine level after 6, 12, and 24 hours, you can use the formula:
final amount = initial amount × (1/2)^(number of half-lives)
Using this formula, you can substitute the given time values to find the caffeine levels. For example, after 6 hours, the caffeine level will be 0.5 times the initial amount, after 12 hours it will be 0.25 times the initial amount, and after 24 hours it will be 0.0625 times the initial amount.
"Which of the following sets the window width to 100 pixels and the height to 200 pixels?
A) setSize(100, 200);
B) setSize(200, 100);
C) setDims(100, 200);
D) set(200, 100);"
Answers
Answer:
Option A is the correct answer for the above question.
Explanation:
When the user wants to create a window application in java, He can create with the help of Java swing and AWT library of java. It gives the features to create a window application.So when a user creates a frame or window with the help of frame or window class, then he needs to set the size of the frame and window which he can set by the help of setSize() function.This function takes two argument weight and height like "setSize(int width, int height)", which is called by the object of window or frame class.The above question wants to ask about the function which is used to set the width and height as 100 and 200 pixels. This can be set by the help of setSize() function which is written as setSize(100,200). This is stated from option A. Hence A is the correct while the other is not because they are not the right syntax.Final answer:
The appropriate method to set the window width to 100 pixels and the height to 200 pixels is A) setSize(100, 200).
Explanation:
The correct option that sets the window width to 100 pixels and the height to 200 pixels is A) setSize(100, 200). This typically corresponds to a method in a graphical user interface (GUI) library in programming, where the first value passed to setSize represents the width and the second value represents the height. Hence, to set the width to 100 pixels and the height to 200 pixels, setSize(100, 200) would be the suitable method call.
When creating documents for larger screens or print, a writer may use the ___________ style to incorporate supporting visuals and summary boxes. A. formal B. converted pyramid C. informal D. linear organization E. conversational
Answers
Answer:
The answer is "Option D".
Explanation:
Linear hierarchical systems are like: that employer only has once supervisor (manager), the main purpose to use this model to link between both the layers of the organization is hierarchical, supervisors are not qualified, conceptual model is relatively low and centralization large, and other choices were wrong, that can be described as follows:
In option A, It is used to writing formal latter, that's why it is wrong. In option B, It is used in making reports, that's why it is wrong. In option C, It is used in writing informal latter, that's why it's incorrect. In option E, It is used in communication, that's why it is not correct.Given two models applied to a data set that has been partitioned, Model A is considerably more accurate than model B on the training data, but slightly less accurate than model B on validation data.
a. Which model are you more likely to consider for final deployment?
b. Please explain why Model A is considerably more accurate than model B on the training data, but slightly less accurate than model B on validation data as concise as possible.
Answers
Answer:
Model B should be deployed.
Explanation:
(a) I would deploy the model that does well on generalizing well on validation data and does considerably well on training data, Hence, Model B should be deployed because it has less BIAS and the problem of overfitting the training set is evaded.
(b) Model A does well on the training dataset and not very well on test/validation dataset because it has OVERFITTED the training set.
OVERFITTING is a scenario where the model has large variance and low bias, that is has a perfect representation of the training set and performs woefully on generalizing validation set. For instance when a neural network has too much hidden layers and no regularization or dropout.
OVERFITTING is a common scenario in model Development.
Final answer:
Model B is slightly less accurate on the training data but more accurate on validation data, suggesting better generalization capabilities and making it a better candidate for final deployment. Model A's overfitting to the training data likely causes its reduced accuracy on validation data.
Explanation:
When comparing two models applied to a data set, the choice for final deployment depends not just on accuracy but on the model's ability to generalize. In this scenario, Model B may be preferred for final deployment because while it is less accurate on the training data, its higher accuracy on validation data suggests better generalization, which means it could perform more reliably with new, unseen data. The higher accuracy of Model A on training data may indicate overfitting, where the model is too closely tailored to the training set and doesn't perform well in predicting outcomes for data it hasn't seen before.
The phenomenon where a model is highly accurate on training data but performs worse on unseen data is common in machine learning and is a classic symptom of overfitting. Overfitting occurs because the model learns the noise in the training data alongside the actual signal. This noise does not generalize to new data, hence the dip in accuracy when applied to validation data. In contrast, Model B's slightly lower performance on training data but marginally better performance on validation data suggests it may have struck a better balance between bias and variance, leading to a potentially more robust model that is less likely to overfit.
A data set has 60 observations with minimum value equal to 30 and a maximum value equal to 72. The estimated class width using the 2k>n rule to determine the number of classes is ___.
Answers
Answer:
7
Explanation:
class width=(largest value-smallest value)/k
where k is the number of classes.
According to 2^k>n rule
We choose different value of k till we get the 2^k greater than number of observation.
The given value of n=60
Now,
2^1=2 <60
2^2=4 <60
2^3=8 <60
2^4=16 <60
2^5=32 <60
2^6=64 >60
So, k=6.
Now class width=(largest value-smallest value)/k
class width=72-30/6
class width=42/6=7
class width=7
Final answer:
The estimated class width for a data set of 60 observations using the 2k > n rule is 7.
Explanation:
To determine the estimated class width using the 2k > n rule, where k is the number of classes and n is the number of observations, we begin by finding a value for k such that 2k > n. Since there are 60 observations (n = 60), we look for the smallest k that satisfies this inequality.
We can start checking values of k starting from 1:
21 = 2 < 6022 = 4 < 6023 = 8 < 6024 = 16 < 6025 = 32 < 6026 = 64 > 60Now that we have found that 26 = 64 is greater than 60, we take k = 6 as the number of classes. Next, we calculate the range by subtracting the minimum value from the maximum value (72 - 30 = 42). The class width can be estimated by dividing the range by the number of classes, so our estimated class width is 42 / 6 = 7.
Write a second convertToInches() with two double parameters, numFeet and numInches, that returns the total number of inches. Ex: convertToInches(4.0, 6.0) returns 54.0 (from 4.0 * 12 + 6.0).FOR JAVA PLEASEimport java.util.Scanner;public class FunctionOverloadToInches {public static double convertToInches(double numFeet) {return numFeet * 12.0;}/* Your solution goes here */public static void main (String [] args) {double totInches = 0.0;totInches = convertToInches(4.0, 6.0);System.out.println("4.0, 6.0 yields " + totInches);totInches = convertToInches(5.9);System.out.println("5.9 yields " + totInches);return;}}
Answers
Answer:
public static double convertToInches(double numFeet, double numInches){
return (numFeet*12)+numInches;
}
Explanation:
This technique of having more than one method/function having the same name but with different parameter list is called method overloading. When the method is called, the compiler differentiates between them by the supplied parameters. The complete program is given below
public class FunctionOverloadToInches {
public static void main(String[] args) {
double totInches = 0.0;
totInches = convertToInches(4.0, 6.0);
System.out.println("4.0, 6.0 yields " + totInches);
totInches = convertToInches(5.9);
System.out.println("5.9 yields " + totInches);
return;
}
public static double convertToInches(double numFeet)
{
return numFeet * 12.0;
}
/* Your solution goes here */
public static double convertToInches(double numFeet, double numInches){
return (numFeet*12)+numInches;
}
}
Explain the role of the network layer and Internet protocol (IP) in order to make internetworking possible.
Answers
Answer:
Internet protocol network layer is referred to as that service that connects the computer, or another connecting modem to the internet network.
Explanation:
Internet protocol network layer is referred to as that service that connects the computer, or another connecting modem to the internet network.
The Internet layer is comprised of protocols, methods that are used to transmit the data packets across the network boundaries. The basic motive on which internet layer work is to modify the internet working, it allows transparency in internet working.
Create a class Cola Vending Machine. This class is simulating a cola vending machine. It keeps track of how many cola bottles are in the class and how much one bottle costs. There should be a method sell Bottle which sells one bottle to a customer, decreases the amount of bottles left. There also is a method restock which sets the number of bottles to the number it is restocked to. Write a main method to test the functionality of the Cola Vending Machine machine.
Answers
Answer:
public class CocaColaVending {
private int numBottles;
private double costPerBottle;
public CocaColaVending(int numBottles, double costPerBottle) {
this.numBottles = numBottles;
this.costPerBottle = costPerBottle;
}
public int getNumBottles() {
return numBottles;
}
public void setNumBottles(int numBottles) {
this.numBottles = numBottles;
}
public double getCostPerBottle() {
return costPerBottle;
}
public void setCostPerBottle(double costPerBottle) {
this.costPerBottle = costPerBottle;
}
public void sellBottles(int numSold){
int remainingStock = this.numBottles-numSold;
setNumBottles(remainingStock);
}
public void restockBottles(int numRestock){
int newStock = this.numBottles+numRestock;
setNumBottles(newStock);
}
}
THE TEST CLASS IS showing the functionality of the class is given in the explanation section
Explanation:
public class CocaColaVendingTest {
public static void main(String[] args) {
CocaColaVending vending = new CocaColaVending(1000,2.3);
System.out.println("Intial Stock "+ vending.getNumBottles());
vending.sellBottles(240);
System.out.println("After Selling 240 bottles "+ vending.getNumBottles());
vending.restockBottles(1000);
System.out.println("After restocking 1000 bottles "+ vending.getNumBottles());
}
}
For each of the following algorithms medicate their worst-case running time complexity using Big-Oh notation, and give a brief (3-4 sentences each) summary of the worst-case running time analysis.
(a) Construction of a heap of size n , where the keys are not known in advance.
(b) Selection-sort on a sequence of size n.
(c) Merge-sort on a sequence of size n.
(d) Radix sort on a sequence of n integer keys, each in the range of[ 0, (n^3) -1]
(e) Find an element in a red-black tree that has n distinct keys.
Answers
Answer:
Answers explained below
Explanation:
(a) Construction of a heap of size n , where the keys are not known in advance.
Worst Case Time complexity - O(n log n)
Two procedures - build heap, heapify
Build_heap takes O(n) time and heapify takes O(log n) time. Every time when an element is inserted into the heap, it calls heapify procedure.
=> O(n log n)
(b) Selection-sort on a sequence of size n.
Worst Case Time complexity - O(n^2)
Selection sort finds smallest element in an array repeatedly. So in every iteration it picks the minimum element by comparing it with the other unsorted elements in the array.
=> O(n^2)
(c) Merge-sort on a sequence of size n.
Worst Case Time complexity - O(n log n)
Merge sort has two parts - divide and conquer. First the array is divided (takes O(1) time) into two halves and recursively each half is sorted (takes O(log n) time). Then both halves are combines (takes O(n) time).
=> O(n log n)
(d) Radix sort on a sequence of n integer keys, each in the range of[ 0 , (n^3) -1]
Worst Case Time complexity - O (n log b (a))
b - base of the number system, a - largest number in that range, n - elements in array
Radix sort is based on the number of digits present in an element of an array A. If it has 'd' digits, then it'll loop d times.
(e) Find an element in a red-black tree that has n distinct keys.
Worst Case Time complexity - O (log n)
Red-black tree is a self-balancing binary tree => The time taken to insert, delete, search an element in this tree will always be with respect to its height.
=> O(log n)
Explain how an appliance firewall, such as pfSense, might be a better fit for a large enterprise than an operating system-specific firewall, such as Windows Firewall.
Answers
Explanation:
A system specific firewall has certain restrictions. Just as its name the system specific firewall works for a single host.
It is important to note that in networking Firewalls are very important inorder to safeguard the networking system.
Therefore, using an appliance firewall will be a better option because it can work on all operating system since it is open source; meaning it is customizable to fit the large enterprise needs.
An appliance firewall, such as pfSense, is a better fit for a large enterprise than an operating system-specific firewall due to its scalability, customization options, and performance.
Explanation:An appliance firewall, such as pfSense, might be a better fit for a large enterprise than an operating system-specific firewall, such as Windows Firewall, for several reasons:
Scalability: Appliance firewalls are designed to handle high traffic volumes and can scale up to meet the needs of large enterprises. They often have built-in load balancing and high availability features, ensuring that network traffic is distributed evenly and that there are no single points of failure.Customization: Appliance firewalls offer more flexibility and customization options compared to operating system-specific firewalls. They can be easily configured to meet an enterprise's specific security requirements and can support a wide variety of network protocols and services.Performance: Appliance firewalls are optimized for performance and can handle network traffic efficiently. They are purpose-built devices that are dedicated solely to the task of firewalling, whereas operating system-specific firewalls run on general-purpose operating systems and may not be as optimized for performance.Learn more about appliance firewall here:https://brainly.com/question/32173811
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The radius and mass of the Earth are, r= 6378 x 10³ meters and m1 = 5.9742 x 10²⁴ kg, respectively.
Prompt the user to input his or her mass in kg and then calculate the gravitational force (F) and acceleration due to gravity (g) caused by the gravitational force exerted on him/her by the Earth.
Consider, F=G(m1)(m2)/(r²) and F=mg. Let the universal gravitational constantG= 6.67300 x 10⁻¹¹ (in units of m³.kg⁻¹.s⁻² assuming the MKS [meter-kilogram-second] system). Check that the resulting value of g is close to 9.8ms⁻². [HINT: There are two formulas for F. In one, m2 is the mass in kg of the user. In the other, m is the mass in kg of the user.
Answers
Answer:
The Program is written in C++
#include<iostream>
using namespace std;
int main()
{
//Variable declaration
double m2;
cout<<"Input your mass (in kilogram): ";
cin>>m2;
//Constant declaration and initialisation
double G = 0.00000000006673;
double m1 = 5974200000000000000000000;
double r = 6378000;
double g = 9.8;
//Calculating Gravitational Force
double F = G * m1 * m2 / (r * r);
//Print Gravitational Force
cout<<"Gravitational Force = "<<F;
// Calculating Force exerted on earth
F = m2 * g;
cout<<"Force = "<<F;
//Calculating acceleration due to gravity (g) caused by the
// gravitational force exerted on him/her by the Earth.
g = G * m2 / (r * r);
cout<<"Gravity Exerted on Earth: "<<g;
return 0;
}
//End of Program
//Comments were used to explain some lines of codes
//Program was implemented using C++
Explanation:
Answer:
Explanation:
True or False? An embedded system is computing technology that has been enclosed in protective shielding for security reasons.
Answers
Answer:
False
Explanation:
That's not true about an embedded system.
3) According to the five-component model of information systems, the ________ component functions as instructions for the people who use information systems. A) software B) data C) hardware D) procedure
Answers
Answer:HUMAN RESOURCES AND PROCEDURE COMPONENTS
Explanation: Information systems are known to contain five components, these components help to describe the various aspects and importance of Information systems.
They Include The DATABASE AND DATA WAREHOUSE components(act as the store for all data), The COMPUTER HARDWARE(the physical components of the information systems such as computer harddrive etc)
THE COMPUTER SOFTWARE( the software which includes all the non physical and intangible assets of the information system),
THE HUMAN RESOURCES AND PROCEDURES COMPONENT( which gives instructions to the users).
THE TELECOMMUNICATIONS.
The procedure component in the five-component model of information systems serves as the essential instructions for users operating the system, guiding them through interactions with both the hardware and software.
Explanation:According to the five-component model of information systems, the procedure component functions as instructions for the people who use information systems. This component is crucial, as it relates to the operation of hardware and the application of software by guiding users through decision-making processes and ensuring effective interaction between users and the system. Procedures can often dictate how data is entered, how users interact with the hardware and software, and how outputs are interpreted, thus influencing the overall efficiency and accuracy of an information system.
Complete the below function which dynamically allocates space to a 3d array of doubles, initializes all values to 0, and returns a pointer to the space.
1. double ***alloc3dArrayOfInts( int length, int width, int depth) {
2. double ***array3d = malloc(________ * sizeof(double **) );
3. for(int i=0; i< length ;i++) {
4. ________ = malloc(width * sizeof(double *) );
5. for(int j=0; j< ________;j++) {
6. __________ = malloc(depth * sizeof(double) );
7. }
8. }
9. return array3d;
10. }
Answers
Answer:
Explanation:
1. double ***alloc3dArrayOfInts( int length, int width, int depth) {
2. double ***array3d = malloc(length * sizeof(double **) );
3. for(int i=0; i< length ;i++) {
4. array3d[i] = malloc(width * sizeof(double *) );
5. for(int j=0; j< width;j++) {
6. array3d[i][j] = malloc(depth * sizeof(double) );
7. }
8. }
9. return array3d;
10. }
One acre of Land is equivalent to 43,560 square feet. Write a program that ask the user to enter the total square feet of a piece of land. Store 43,560 in a constant variable. Use the constant variable in the algorithm. Return the answer in acres, format your answer with 2 decimal places.
Answers
Answer:
#include <stdio.h>
int main() {
const float square_feet;
printf("Enter area in square feets: ");
// reads and stores input area
scanf("%f", &square_feet);
float acres= square_feet/43560;
// displays area in acres
printf("area in acres is: %.2f", acres);
return 0;
}
Explanation:
code is in C language.
double slashed '//' lines are not code but just comments to understand what it mean in code or for explanation purpose
Final answer:
The student's question involves creating a program to convert square feet into acres using a constant value for the conversion. The provided pseudocode example uses a constant variable to store the number of square feet in an acre and outputs the result in acres formatted to two decimal places.
Explanation:
The question pertains to writing a program that calculates the number of acres based on the total square feet of a piece of land. Given that one acre of land is equivalent to 43,560 square feet, the student is asked to use this figure as a constant value within the algorithm. The result should be formatted to display the answer to two decimal places. Here is a simple example of how such a program could be structured in pseudocode:
CONSTANT SQFT_PER_ACRE = 43560
function convertToAcres(sqft):
acres = sqft / SQFT_PER_ACRE
return format(acres, '.2f')
// Prompt user for input
total_sqft = input('Enter the total square feet of land: ')
// Convert and display the result
print(convertToAcres(float(total_sqft)), 'acres')
This program will first define the constant SQFT_PER_ACRE, which holds the value 43,560. It will then define a function convertToAcres that takes the square footage as an input, performs the conversion by dividing it by SQFT_PER_ACRE, and returns the formatted value. The user is prompted to enter the total square feet, and the result is outputted in acres formatted to two decimal places.
Alex's woodworking shop is trying to design a web page with Cascading Style Sheets (CSS). Alex would like create the new design based on the latest elements and styles from Hypertext Markup language (HTML) and CSS. He has created a few sample pages: home. htm ----------describes the business and contact information Product.htm ----------displays a list of product descriptions Custom.htm -----------displays a list of custom productsAlex wants to create styles that apply only to the HTML document in which they are created. Hel Alex in selecting an appropriate style to be used for this purpose. a. External style b. Inline stylec. Embedded style d. User-defined style Alex had forgotten to give any style for all of his pages. In this case, identify the style that applied to his pages. a. User-defined style b. External stylec. User agent styled. View render style
Answers
Answer:
1. C) Embedded Style
2. C) User Agent Style
Explanation:
1. Alex will use Embedded style to create styles that apply only to the HTML document that the style was created. With Embedded styling; the rules can be embedded into the HTML document using the <style> element.
2. Since Alex has forgotten to give any style for all of his pages, the style that will be applied to his pages is User Agent Style. User Agent Style is the default style of a browser. The browser has a basic style sheet that gives a default style to any document and this style is called User Agent.
Alex should use embedded styles for each of his HTML pages, as these styles apply only to the specific page they are defined on. If no style is specified for any of the pages, the browser applies its default style, known as the user agent style.
Explanation:For Alex to apply styles only to the HTML document in which they are created, embedded styles (also known as internal styles) is the way to go. Embedded styles are defined within the <style> tag found in the <head> section of the HTML file. These styles are only active on the specific page they are defined on.
Now, for the style that would automatically apply to his pages if Alex forgets to give any style, the answer is the user agent style. This is the default style provided by the browser, which it uses when no specific style is defined by the webpage.
Learn more about Web page styling in CSS here:https://brainly.com/question/32222207
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