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.

Below is a code for StatsDemo.java that writes the output to a file

Java

i

       PrintWriter printWriter = new PrintWriter(fileWriter);

       // Since you are using a FileWriter object, add a throws clause to the main method header

       // This will allow you to catch any exceptions thrown by the FileWriter or PrintWriter objects

       try {

           // Read the data from the file

           Scanner scanner = new Scanner(new File("Numbers.txt"));

           // Calculate the mean and standard deviation of the data

           double[] data = new double[scanner.nextInt()];

           for (int i = 0; i < data.length; i++) {

               data[i] = scanner.nextDouble();

           }

           double mean = calculateMean(data);

           double standardDeviation = calculateStandardDeviation(data, mean);

           // Print the mean and standard deviation to the output file using a three decimal format, labeling each

           DecimalFormat df = new DecimalFormat("0.000");

           printWriter.println("Mean = " + df.format(mean));

           printWriter.println("Standard deviation = " + df.format(standardDeviation));

       } finally {

           // Close the output file

           printWriter.close();

           fileWriter.close();

       }

   }

}

The output file will contain the following:

Mean = 0.000

Standard deviation = 0.000

So, the above code will read the data from the file "Numbers.txt", calculate the mean and standard deviation of the data, and then write the results to a file called "Results.txt".

code is incomplete as it is showing inappropriate words

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.

Answer:

Following is attached the code that works accordingly as required. It reads in characters from standard input and outputs the number of times it sees an 'a' followed by the letter 'b'. All the description of program is given inside the code as comments.

I hope it will help you!

Explanation:

Final answer:

The script provided uses a for loop and the range function to generate and print numbers 0 to 25 with a message stating 'Generated number: X'.

Explanation:

To create a Python for loop script that generates a sequence of integer numbers from zero to 25 and prints out those numbers with a specific message, you can use the following 2-line script:

for i in range(26):
   print(f'Generated number: {i}')

This script uses a for loop and the range function to generate the sequence, and a formatted string to print the numbers with the message.

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.

Answer:

Solved. Please download the attached zipped file. You can download the answers from the given link in explanation section

Explanation:

Download the attached file and unzipped/extract it to the root folder of your server.

This package contains all the files and folders as asked in the project.

In this package you can find the 5 pages in the includes folder and at the root you can find the index file. Click on the index file to open it.

Each page is stylized and have uniqueness than other pages. Please also note that, each page contains first, last and initial name in the title section of each page and in body section of each page. You can modify these names parameter according to your name/requirement

https://drive.google.com/file/d/1OBdjUI6JOnUuji-iYPmPWnJBk4gcMd6X/view?usp=sharing

Answer:

Let the two string type variables be var1 and var2.  The value stored in these two variables is : The "use" of quotations causes difficulties.

          string var1 = "The \"use\" of quotations causes difficulties.";  

string var2 = "The " + '\u0022' + "use" + '\u0022' + " of quotations causes difficulties.";

const string quotation_mark = "\"";

string var2 = "The " + quotation_mark + "use" + quotation_mark + " of quotations causes difficulties.";

Explanation:

In order to print and view the output of the above statements WriteLine() method of the Console class can be used.

   Console.WriteLine(var1);

   Console.WriteLine(var2);

In the first statement escape sequence \" is used in order to print: The "use" of quotations causes difficulties. This escape sequence is used to insert two quotation marks in the string like that used in the beginning and end of the word use.

In the second statement '\u0022' is used as an alternative to the quoted string which is the Unicode character used for a quotation mark.

In the third statement a constant named  quotation_mark is defined for quotation mark and is then used at each side of the use word to display it in double quotations in the output.

Answer:

Option A is the correct answer for the above question.

Explanation:

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.

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.

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.

Answer:

False

Explanation:

That's not true about an embedded system.

Answer:

Explanation:

A null pointer is pointing to nothing, if we can detect if a pointer is null, we can use an "IF" because a null pointer always going to be false, a null pointer even can block an application, because is a result of undefined behavior, it can even cause problems because the compiler can’t tell whether we mean a null pointer or the integer 0, there is a confusion in this kind of pointers.

Answer:

The given question is incomplete as it does not contains the complete information.

Following are attached images:

I hope it will help you!

Explanation:

Final answer:

SJSBC is a business that charters sailboats ranging from 28 to 51 feet. Owners provide permanent and non-permanent equipment, while SJSBC offers consumables for tracking and accounting.

Explanation:

San Juan Sailboat Charters (SJSBC) is a company that facilitates the chartering of sailboats for boat owners. The smallest sailboat they charter is 28 feet long, while the largest is 51 feet. Equipment such as stoves, radios, and compasses are considered owner-provided and are attached to the boat. Additional equipment like sails, anchors, and life preservers, while not attached, are also provided by the owners. SJSBC contributes by supplying consumable supplies, treated as equipment for tracking and accounting purposes, including navigation tools and various personal use items.

Answer:

# The user input is accepted and stored in myString

myString = input(str("Enter your string: "))

# An empty string called reversedString is declared

reversedString = ''

# l is defined to show number of times the loop will occur.

# It is the length of the received string minus one

# since the string numbering index start from zero

l = len(myString) - 1

# Beginning of the while loop

while l >= 0:

   reversedString += myString[l]

   l = l - 1

# The reversed string is printed to the user

print(reversedString)    

Explanation:

Final answer:

To reverse the order of characters from myString to reversedString, iterate over myString in reverse and concatenate each character to reversedString. This process uses a loop and results in reversedString containing the characters of myString but in reversed order.

Explanation:

The student asked how to add characters from the variable myString to the variable reversedString in reverse order using a loop. This can be achieved by iterating over myString in reverse and concatenating each character to reversedString. Here's how it can be done in Python:

myString = "example string"
reversedString = ""
for char in reversed(myString):
   reversedString += char
print(reversedString)

This code snippet iterates over myString in reverse order. For each iteration, it adds the current character to reversedString. By the end of the loop, reversedString will contain all characters from myString but in reverse order.

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());

   }

}

The answer & explanation for this question is given in the attachment below.

Alg2 needs to be executed at least 17 times for the problem instance of size 500 to justify its development cost.

We have,

Let's first calculate the cost of development and implementation of Alg2:

Cost of programmer time for Alg2 = 15 hours * $20 per hour = $300

Cost of CPU time for Alg2 = 6 minutes * $50 per minute = $300

Total development cost for Alg2 = $300 + $300 = $600

The CPU time required by Alg2 for one instance of size 500

= 100 * 500 * log(500) microseconds

(since Alg2 runs in 100n log n microseconds)

We need to convert the CPU time to dollars:

CPU time cost for one instance of size 500

= 100 * 500 * log(500) microseconds * ($50 per minute / 1,000,000 microseconds)

= $35.76 (approximately)

Now, to justify the development cost, we need to find out how many times Alg2 needs to be executed for the total cost of running Alg2 to surpass the development cost:

Number of times Alg2 needs to be executed

= Total development cost / Cost of running Alg2 for one instance of size 500

= $600 / $35.76

= 16.77

= 17 (approximately)

Thus,

Alg2 needs to be executed at least 17 times for the problem instance of size 500 to justify its development cost.

Learn more about expressions here:

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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:

Answer:

1. Identify the application’s purpose.

2. Identify the items that the user must provide.

3. Identify the items that the application must provide.

4. Determine how the user and the application will provide their respective items.

5. Draw a sketch of the user interface.

Explanation:

There are five steps to plan a windows forms application, mentioned above in the proper order. First of all, the purpose of the application has been identified.  Then, inputs of the form from user and output of the form will be identified. Then it has been identified that, how the inputs and output, will be provided. In last, user interface will be drawn.

Answer:

The binary expression or the given code is as follows:

I hope it will help you!

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.

Answer:

d. ICMP Echo Reply (type 0)

Explanation:

ICMP or internet control message protocol is an Internet layer protocol in the TCP/IP suite. It works together with routing devices like the router to send messages based on results sensed in the network.

The RFC 1122 has stated that the ICMP server and end user application be configured or installed in user devices, for receiving and sending ICMP echo request packets and reply. The process is called pinging.

For an attacker to implement ping of ping, he needs to confirm if the target user in live by sending an ICMP echo request packet type 8, to receive an ICMP echo reply type0.

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)

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.

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:

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Answer:

"student ID, number and title" is the correct answer for the above question.

Explanation:

Unique identifiers for the entities Student, Movie, and Locker are the student ID, the combination of title and date released, and the locker number, respectively. These serve as primary keys in a database, essential for data management and retrieval in an RDBMS.

For each entity, the attribute that could be the unique identifier, often known as the primary key, in a database is essential to ensure that each record can be distinguished from all others. The unique identifier for the Student entity would typically be student ID, as it is unique to each student and does not duplicate. For the Movie entity, the title combined with the date released could serve as a unique identifier, since it's possible for different movies to have the same title if they are released in different years. Lastly, a Locker's unique identifier would likely be its number, assuming each locker has a unique number in a given location.

When managing data in a relational database management system (RDBMS), primary keys are crucial for linking tables and structuring complex queries that may include SQL clauses such as SELECT, FROM, WHERE, ORDER BY, and HAVING. It is these keys that enable the efficient retrieval and management of data within the database.

Answer:

True.

Explanation:

OSI network model is a networking framework that has seven layers that describes the encapsulation and communication of devices in a network. The seven OSI model layers are, application, presentation, session, transport, network, data-link and physical layer.

Each layer in this model describes the protocol datagram unit PDU and identifies several standard and proprietary protocols that can be used in a layer.

A network administrator of engineer can decide to use a protocol based on his choice and the brand of network device used.

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.

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:

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.

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.

Answer:

California Identity Theft Statute

Explanation:

The California Identity Theft Statute, also referred to as the Penal Code 530.5 PC is a statute that clearly provides a definition of what the crime of identity theft actually is. Identity theft is a crime committed when the personal identifying information of another person is taken and used unlawfully or fraudulently. The statute further provide ample information to victims of identity theft in order to avert such occurrence or further damage.

Answer:

Accounting.

Explanation:

Computer networks are designed to allow computer devices to communicate intelligently. The connection of these network devices could be wired or wireless. A network can be private or public. Most companies adopt private network implementation, but create a platform for access of this private to public users.

They used several technologies like DMZ, VPN etc to provide the network services to extended users. They also implement security policies like the CIA's AAA, that is, authentication, authorization and accounting.

Authentication describes the security access to a user account, Authorization describes what the user can do with the account while Accounting is the quality of services and information a user receives.

The given decimal values are converted to octal and hexadecimal.

Explanation:

a. The converted octal value of 111010110001.0112 decimal number is  1473055755061.00557000643334272616

The converted hexadecimal value of 111010110001.0112 decimal number is  19D8B7DA31.02DE00D1B71758E21965

b. The converted octal value of 10110011101.112 decimal number is  113246503335.07126010142233513615

The converted hexadecimal value of  10110011101.112 decimal number is  

25A9A86DD.1CAC083126E978D4FDF4

a. while converting back from octal to decimal the value is 111010110001.01119999999999999989

b. while converting back from octal to decimal the value is

10110011101.11199999999999999973

Hence both the values changes while we convert from octal to decimal.

Answer:

This type of malware are called Polymorphic Malware.