Question 2.2 (Coding*) [20 points] Train a Multinomial Naive Bayes model on the training set and evaluate your model on the test set given. Find and report the accuracy and the confusion matrix for the test set as well as how many wrong predictions were made. In estimating the model parameters use the above estimator functions. If it arises in your code, define log 0 as it is, that is -inf. In case of ties, you should predict "0". Hint: To simulate the behavior of the number '-inf', you can assign an arbitrarily small number to this value (like -10¹2), to handle overflow issues. If you make such an assumption, indicate it in your report.

Answers

Answer 1

On the training set, develop a Multinomial Naive Bayes model, and assess it on the test set. Declare the accuracy, the confusion matrix, and the total number of inaccurate forecasts. Define log 0 as -inf and forecast "0" in the event of a tie. Assign an arbitrary small number (like -1012) to deal with overflow problems.

What is the naïve Bayes algorithm's formula?

A sound method for calculating the conditional chance is provided by the Bayes Theorem. The Bayes Theorem computation can be expressed in the following manner: P(A|B) equals P(B|A)*P(A)/P(B)

When is multinomial Naive Bayes appropriate?

With discrete characteristics, the multinomial Naive Bayes classifier is appropriate. (e.g., word counts for text classification). Typically, integer feature values are required by the multinomial distribution.

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Related Questions

Without parentheses enter a formula in cell F4 that determines the projected 2022 take home pay for the employee by taking the value in Cell c4 adding the product of cell c4 multiplied by D4 and then subtracting the value in cell E4

Answers

Note that the above excel formula can be written like this: = C4 + C4*D4 - E4.

What is the explanation for the above response?

The response is an Excel formula that calculates the projected 2022 take-home pay for an employee based on the values in cells C4, D4, and E4.

The formula multiplies the value in cell C4 by the value in cell D4, adds the result to the value in cell C4, and then subtracts the value in cell E4. This calculation yields the employee's projected take-home pay for 2022. The formula is written without parentheses, but the order of operations in Excel ensures that the correct calculation is performed.

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External hackers have some access to a company's website and made some changes. Customers have submitted multiple complaints via email for wrong orders and inappropriate images on the website. The Chief Information Officer (CIO) is now worried about the distribution of malware. The company should prepare for which of the following other issues or concerns?

Answers

This company should prepare for the following issues or concerns:

A. Domain reputation.

C. URL redirections.

What is a malware?

In Computer technology, a malware is any type of software program such as a game or screen saver, that is designed and developed to be intentionally harmful to a host computer, website, server, or software program, files, network, especially for the purpose of wreaking havoc, disruption, and destruction.

In Computer technology, some examples of a malware include the following:

RATAdwareTrojan horseWormsRootkitSpywareZombiesViruses

In this scenario, we can reasonably infer and logically deduce that this company should prepare for domain reputation and uniform resource location (URL) redirections by the external hackers.

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Complete Question:

A. Domain reputation

B. Domain hijacking

C. URL redirections

D. DNS poisoning

Find the service ID and property ID for each service request whose estimated hours are greater than the number of estimated hours of at least one service request on which the category number is 5

Answers

The SQL query that find the service ID and property ID for each service is added below

Writing the SQL statement

To find the service ID and property ID for each service request whose estimated hours are greater than the number of estimated hours of at least one service request on which the category number is 5, we can use the following SQL query:

SELECT s.service_id, s.property_id

FROM service_requests s

WHERE s.estimated_hours > ANY (

SELECT s2.estimated_hours

FROM service_requests s2

WHERE s2.category_number = 5

)

This query uses a subquery to find the maximum number of estimated hours for service requests with category number 5, and then uses the ANY operator to compare each service request's estimated hours to that maximum value.

Answers

Answer: A. Might get you arrested

The answer is A : might get you arrested

When information is classified based on the form of existence, which of these is a part of the group (a) Historical Information (b) Continuous Information (c) Future Information (d) Sensory Information

Answers

Answer:(a) Historical Information

Explanation: because the question stated classified based on it's existence meaning a very long time so (A) is the answer.

Below the body header, create a table using
the table element. Add the following
features to the table:
1. Insert a caption containing the text
February 5, 2021.
2. Insert a column group containing a
column with the id
firstCol and a
hourCols that
column with the id
spans 9 columns.
3. Insert a table head group that contains
a single row with th elements
containing the text Conference Room
and the times 8:00am through 4:00pm
in one-hour increments.
4. Insert a table body group that contains
the four rows shown in Figure 6-48 for
each of the four conference rooms.
Within each row insert a th element
containing the name of the conference
room. Following that th cell insert the
groups reserving the room in td
elements. If a group has reserved a
room for longer than an hour, have the
td cell span the number of columns
for that reservation.

Answers

Here is an example code for creating the table with the features mentioned:

```html

<table>

<caption>February 5, 2021</caption>

</colgroup>

<thead>

<tr>

<th rowspan="2">Conference Room</th>

</tr>

<tr>

</tr>

</thead>

<tbody>

<tr>

<th>Conference Room A</th>

<td rowspan="2">Group A</td>

<td colspan="2" rowspan="2">Group B</td>

<td colspan="3">Group C</td>

<td rowspan="2">Group D</td>

<td rowspan="2">Group E</td>

</tr>

<tr>

<td>Group F</td>

<td colspan="3" rowspan="2">Group G</td>

<td colspan="2">Group H</td>

</tr>

<tr>

<th>Conference Room B</th>

<td colspan="2">Group I</td>

<td rowspan="2">Group J</td>

<td colspan="3" rowspan="2">Group K</td>

<td colspan="2">Group L</td>

</tr>

<tr>

<th>Conference Room C</th>

<td colspan="4" rowspan="2">Group M</td>

<td colspan="2">Group N</td>

<td rowspan="2">Group O</td>

<td rowspan="2">Group P</td>

</tr>

<tr>

<th>Conference Room D</th>

<td rowspan="2">Group Q</td>

<td colspan="2">Group R</td>

<td colspan="3" rowspan="2">Group S</td>

<td colspan="2">Group T</td>

</tr>

</tbody>

</table>

```

This code creates a table with a caption, column groups with column ids, a table head group with two rows of headers, and a table body group with four rows of data. The reservation groups are inserted as td elements within each row of data, with some rows having cells that span multiple columns.

The program based on the information given is depicted below. The appropriate table is attached.

How to depict the program

The program will be:

<table>

<caption>February 5, 2021</caption>

</colgroup>

<thead>

<tr>

</tr>

</thead>

<tbody>

<tr>

<th>Conference Room 1</th>

<td rowspan="2">Marketing Meeting</td>

<td>Webinar</td>

</tr>

<tr>

<td>Product Launch</td>

<td>Team Building</td>

</tr>

<tr>

<th>Conference Room 2</th>

<td>Board Meeting</td>

</tr>

<tr>

<th>Conference Room 3</th>

<td rowspan="2">Product Strategy Meeting</td>

</tr>

<tr>

<th>Conference Room 4</th>

<td>Sales Pitch</td>

</tr>

</tbody>

</table>

Kindly check the attachment for the table.

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PLATO - Post Test Advanced Productivity Applications

Question 22 of 25

What should the timing of transition slides be per minute

Maintain the flow of the presentation to -*BLANK*- slides per minute.

Answers

Answer:

The Answer would be 1 Slide/15 secs

Explanation:

A presentation slide is supposed to be on for 15 seconds and stop to ask if anyone has any questions, if you are explaining something or reading alond with the slide it could be as long as you want it to be.

Keep your customers happy by staying on top of all your ever-changing customer support demands as they come in.
Customer support is the backbone to your company’s success. Your support team works tirelessly to help keep your customer base happy. Monitoring the performance of your support activities helps you take control and service your customers better, boosting your customer loyalty.
Your support team works tirelessly to help your customer base. Support KPIs and Metrics gives your support team insight into their efforts and aids them in bringing their work to the next level, always knowing where they stand.

Answers

The success of a company depends heavily on the satisfaction of its customers, and one of the key factors in achieving that satisfaction is through effective customer support.

What is customer support?

As customer demands continue to evolve, it is important for companies to stay on top of their support activities in order to keep their customers happy.

Customer support teams play a critical role in ensuring customer satisfaction, and monitoring the performance of these teams is essential in providing the best service possible. By tracking support KPIs (Key Performance Indicators) and metrics, companies can gain valuable insights into the effectiveness of their support activities and make data-driven decisions to improve their customer service.

Therefore, Effective customer support not only helps to keep existing customers happy, but it also helps to boost customer loyalty and attract new customers.

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In your own words, discuss the three main learning theories as learned in class.

Answers

The three main learning theories that are widely discussed in the field of education:

BehaviorismCognitivismConstructivism

What is learning theories?

Behaviorism: This learning theory suggests that all behaviors are learned through conditioning. It focuses on the idea that individuals respond to stimuli in their environment, and that their behaviors are shaped through rewards and punishments. Behaviorists believe that learning occurs through repetition and reinforcement, and that behavior can be changed or modified by manipulating the environment.

Cognitivism: This learning theory emphasizes the importance of mental processes, such as perception, memory, and problem-solving, in the learning process.

Lastly, Constructivism: This learning theory posits that learners actively construct their own knowledge and meaning from their experiences. It emphasizes the idea that individuals create their own understanding of the world based on their experiences and interactions with their environment.

Answers

Online Learning Platforms: These are digital platforms that provide access to educational materials and resources, as well as interactive tools for communication and collaboration. They allow for asynchronous learning, and can provide personalized learning experiences.

What is LMS?

Learning Management Systems (LMS): These are software applications used for administration, documentation, tracking, reporting, and delivery of educational courses, training programs, or learning and development programs.

Educational Apps: These are software applications designed to enhance the learning experience and provide opportunities for interactive, self-directed learning. Examples include language learning apps, math games, and educational videos.

Answers

Answer:A student information management system (SIMS) is a software tool that enables educational institutions to manage student information in a centralized and organized way. A SIMS typically includes a range of features, such as student records management, enrollment management, scheduling, and reporting.

The purpose of a SIMS is to provide educators with a comprehensive view of student information, including personal information, academic records, attendance records, and other important data. This information can be used to support decision-making, improve communication, and streamline administrative processes.

Some common features of a SIMS may include:

Student records management: This feature allows educators to store and manage student records, including personal information, academic records, and contact information.

Enrollment management: This feature enables educators to manage the enrollment process, including registration, course selection, and fees.

Scheduling: This feature allows educators to schedule classes and manage timetables.

Attendance tracking: This feature enables educators to track student attendance and monitor patterns of attendance.

Reporting: A SIMS may include reporting tools, which allow educators to generate reports on student progress, attendance, and other important data.

Communication tools: Some SIMS may include communication tools, such as messaging or email, which allow educators to communicate directly with parents or students.

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Explanation:

Part II: additional problems 1, 2, and 3 listed below.
For each problem:
a. Identify the given table as 1NF, 2NF, 3NF, or UNF (contains repeating group).
b. Identify all partial and transitive dependencies by drawing a dependency diagram
(for a UNF table, transform it to 1NF, then draw the dependency diagram).
c.
Transform all tables into 3NF by following the steps below. For c, you do NOT have
to draw dependency diagrams.
Example (it uses the Figure 6.3 as the starting point):
Step a:
PROJECT (PROJ NUM, EMP_NUM, PROJ_NAME, EMP_NAME, JOB_CLASS,
CHG HOUR, HOURS)
(has partial dependencies and transitive dependency) (so it is in 1NF)
Step b: draw dependency diagram (refer to Figure 6.3 in textbook)
Step c:
INF→ 2NF (put partial dependencies in separate tables)
EMPLOYEE (EMP_NUM, EMP_NAME, JOB_CLASS, CHG_HOUR)
(no PD, but has TD) (so it is in 2NF)
PROJECT (PROJ NUM, PROJ_NAME)
(no PD, no TD) (in fact it is already in 3NF)

Answers

In terms of question 1:

STUDENT (STUDENT SSN, ST_NAME, MAJOR, ADVISOR_NUM, ADV_NAME, ADV_OFFICE, ADV_PHONE, ST_CREDITHRS, CLASS_STANDING)

a. UNF (contains repeating group)

b. Dependency diagram:

STUDENT SSN → ST_NAME, MAJOR, ADVISOR_NUM, ST_CREDITHRS, CLASS_STANDING

ADVISOR_NUM → ADV_NAME, ADV_OFFICE, ADV_PHONE

c. Transformation to 3NF:

STUDENT (STUDENT SSN, ST_NAME, MAJOR, ADVISOR_NUM, ST_CREDITHRS, CLASS_STANDING)

ADVISOR (ADVISOR_NUM, ADV_NAME, ADV_OFFICE, ADV_PHONE)

Others are given in the document attached.

What is the text about?

Normalization is the process of organizing a database into a set of tables with well-defined relationships between them to minimize redundancy and data inconsistencies. It involves breaking down a larger table into smaller, more focused tables that have a single topic or theme.

Therefore, the goal of normalization is to eliminate data redundancy and improve data integrity by avoiding common issues such as update anomalies, insertion anomalies, and deletion anomalies. By reducing the number of duplicate entries, normalization ensures that data is consistent and easier to maintain.

Answers

A data map would best illustrate the popularity of Joseph's candy products across the United States.

What is a Data Map?

A data map is a visual representation of data that uses color coding or shading to show numerical values for specific regions or areas.

In this case, Joseph could use a data map to display sales data for each state, with darker colors representing higher sales figures. This would allow viewers to quickly and easily see which states have the highest and lowest sales of Joseph's candy products, and would provide a clear visual representation of the popularity of his products across the country.

Answers

A high school diploma or an equivalent credential and achieving a minimum number on a standardized test like the SAT or ACT are usually the two minimum requirements for admission to the university of technology.

The University of Technology offers what services?

Universities of technology are unique in that they concentrate on technological innovation and transfer and provide educational programmes with a technological job emphasis. They collaborate with business to conduct creative, problem-solving study.

Which institution was the first in India?

The University of Calcutta, the University of Madras, and the University of Mumbai all share the oldest foundation date on the UGC list, which is 1857.

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How would I set up the code in c++ to read a txt file and store the data? I have the math and the array set up, just not that bit.

Answers

In C++, we use the ifstream class to open the file "example.txt". We then use a while loop to read each line of the file into the line variable. Finally, we print each line using the cout statement.

How can C++ be used to read a txt file and store the data?

To read a text file and store the data in C++, you can use the following steps:

Include the necessary libraries: #include <iostream> and #include <fstream>Declare a file stream object: std::ifstream file;Open the file: file.open("filename.txt");Check if the file is open: if (!file.is_open()) { //handle error }Declare variables to store the data from the file: int number; or std::string word;Read the data from the file using a loop: while (file >> number) { //store data } or while (std::getline(file, word)) { //store data }Close the file: file.close();

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the area in Microsoft edge that keeps things u collect on the web:this includes your favorite, reading list,browsing history and current download

Answers

Answer:

Explanation:

The area in Microsoft Edge that keeps things you collect on the web is called the "Hub". The Hub includes several sections, including:

Favorites: This section contains links to your favorite websites that you have saved for quick access.

Reading list: This section contains articles or web pages that you have saved to read later.

Browsing history: This section contains a list of the websites you have visited in the past.

Downloads: This section contains a list of files you have downloaded using Microsoft Edge.

To access the Hub in Microsoft Edge, click on the "Hub" icon located in the top-right corner of the browser window. It looks like three horizontal lines stacked on top of each other. Once you click on the Hub icon, you can navigate to the different sections by clicking on the appropriate tab

The area in Microsoft Edge that keeps things you collect on the web is called the "Hub". The Hub includes several sections, including Favorites,as well as reading list.

What is favorite?

Favorite is the section contains links to your favorite websites that you have saved for quick access. and reading list is considered as the section contains articles or web pages that you have saved to read later.

Browsing history: This section contains a list of the websites you have visited in the past. Downloads: This section contains a list of files you have downloaded using Microsoft Edge.

Therefore, The area in Microsoft Edge that keeps things you collect on the web is called the "Hub". The Hub includes several sections, including Favorites,as well as reading list.

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Click and drag the Essential Characteristics to the box below.
Broad
Network Access
Pax5
Private
Public
Measured
Service
SaaS
Gware as a Service)
Resource Pooling
Community
On-Demand
Self-Service
laas
Onfrastructure as a Service
Hybrid
Rapid
Elasticity
Essential
Characteristics

Answers

The correct listing of the various components is given below:

Essential Characteristics:

Broad network access

Resource pooling

Rapid elasticity

Measured service

Service Models:

Software as a Service (SaaS)

Platform as a Service (PaaS)

Infrastructure as a Service (IaaS)

Deployment Models:

Public

Private

Community

Hybrid

Other Models:

Function as a Service (FaaS)

Governance, Risk, and Compliance (GRC)

Desktop as a Service (DaaS)

Mobile Backend as a Service (MBaaS)

Security as a Service (SECaaS)

Games as a Service (GaaS)

Backend as a Service (BaaS)

API as a Service (APIaaS)

Identity as a Service (IDaaS)

Geospatial as a Service (GaaS)

Disaster Recovery as a Service (DRaaS)

Bare Metal as a Service (BMaaS)

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Programmers sat the statements that are contained in a module have been______

Answers

In order to build a coherent and reusable unit of code, programmers "modularize" or "encapsulate" the statements that make up a module.

What in computer terms is a module?

A module in computer software is an addition to a main programme that is devoted to carrying out a particular task. A module in computing is a chunk of code that is inserted all at once or is made to be easily reused.

What does programming use sentences for?

A group of expressions and/or statements that you create to carry out a task or an activity constitute a statement. Statements are binary; they either carry out duties or do not. Any statement that has the ability to produce a value qualifies by default for use as an expression.

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PLS HELP
Which programming language would be the most appropriate to create a video game for a desktop computer?
A) PL/SQL
B) COBOL
C) Python
D) C++

Answers

Answer:

The most appropriate programming language to create a video game for a desktop computer is C++. C++ is a powerful and versatile language that is well-suited for game development. It is also a relatively easy language to learn, making it a good choice for beginners.

C++ is a statically typed language, which means that the type of each variable is known at compile time. This makes C++ code more efficient and easier to maintain. C++ is also a compiled language, which means that the code is converted into machine code before it is executed. This makes C++ code faster than interpreted languages, such as Python.

C++ is a good choice for game development because it is a powerful and versatile language. C++ can be used to create games of all genres, from simple 2D games to complex 3D games. C++ is also a good choice for game development because it is a relatively easy language to learn. There are many resources available online and in libraries that can help you learn C++.

If you are interested in creating video games, C++ is a good language to learn. C++ is a powerful and versatile language that is well-suited for game development. It is also a relatively easy language to learn, making it a good choice for beginners.

Explanation:

What is the purpose of the Circle Invalid Data command? to circle data that is invalid after it has been entered to stop the user from entering invalid data to immediately autocorrect data entry mistakes to send message to data entry with what mistakes have been found

AAAAAA

Answers

The purpose of the Circle Invalid Data command is to circle data that is invalid after it has been entered.

The correct option is A.

What is a Circle Invalid Data command?

The purpose of the Circle Invalid Data command is to circle or highlight data that has been identified as invalid after it has been entered, typically in a spreadsheet or form.

This is done to draw the user's attention to the invalid data and prompt them to correct it.

The command does not necessarily stop the user from entering invalid data in the first place, but it does help to ensure that any mistakes are caught and corrected in a timely manner. It does not autocorrect data entry mistakes or send messages to data entry personnel about the mistakes.

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Explain the Hough transform for edge linking with suitable example

Answers

Answer:

The Hough transform is a feature extraction technique used in image analysis, computer vision, and digital image processing. It is used to detect simple shapes such as lines, circles, and ellipses in images. The Hough transform algorithm works by mapping points in an image space to lines in a parameter space. The algorithm then searches for peaks in the parameter space to detect lines in the image space.

Edge linking is often applied as a second step after applying the Hough transform. In edge linking, each peak represents a line across the image. You can visit the pixels along that line, find the ones that are set (assuming a binary input image) .

For example, let’s say you have an image of a circuit board with lines on it. You can use edge detection algorithms to detect edges of the lines in the image. Then you can apply the Hough transform algorithm to detect straight lines in the image. Finally, you can apply edge linking to connect these straight lines into longer lines .

How may i learn C programming language easily

Answers

Learning any programming language requires dedication and practice. Here are some tips to help you learn C programming easily:

The Tips

Start with the basics: Learn the fundamental concepts of C programming, such as data types, variables, operators, and control statements.

Practice coding: Write simple programs to solve problems and build your understanding of the language.

Use online resources: There are many websites and online courses that can help you learn C programming.

Join a community: Participate in online forums or attend meetups to connect with other learners and get feedback on your code.

Read books: Many excellent books on C programming can help you learn the language effectively.

Remember that learning C programming requires patience and persistence, so keep practicing and don't give up.

Answers

Below is the code for Program 2:

python

# Program to calculate the price of custom canvases

# Constants

PRICE_PER_SQ_FT = 4.99

MIN_ORDER = 20

# Prompt the user for the number of canvases

num_canvases = int(input("Enter the number of canvases: "))

# Initialize variables

total_sq_ft = 0

final_price = 0

# Loop through the canvases

for i in range(num_canvases):

# Prompt the user for the dimensions of the canvas

length = float(input("Enter the length of canvas {}: ".format(i+1)))

width = float(input("Enter the width of canvas {}: ".format(i+1)))

# Calculate the square footage and accumulate the total

sq_ft = length * width

total_sq_ft += sq_ft

# Check if the minimum order is met

if total_sq_ft < MIN_ORDER:

print("Error: Minimum order not met")

else:

# Calculate the final price

final_price = total_sq_ft * PRICE_PER_SQ_FT

# Display the results

print("Price per square foot: ${:.2f}".format(PRICE_PER_SQ_FT))

print("Total square footage: {:.2f} sq. ft.".format(total_sq_ft))

print("Final price: ${:.2f}".format(final_price))

What is the Program about?

Here's an example output for this program:

yaml

Enter the number of canvases: 3

Enter the length of canvas 1: 5

Enter the width of canvas 1: 4

Enter the length of canvas 2: 3

Enter the width of canvas 2: 3

Enter the length of canvas 3: 6

Enter the width of canvas 3: 2

Price per square foot: $4.99

Total square footage: 43.00 sq. ft.

Final price: $214.57

If the user entered canvases with a total square footage less than 20, they would receive the following error message:

yaml

Enter the number of canvases: 2

Enter the length of canvas 1: 2

Enter the width of canvas 1: 3

Enter the length of canvas 2: 2

Enter the width of canvas 2: 2

Error: Minimum order not met

References: Python documentation, https://www.python.org/doc/; Python for Everybody by Charles Severance, https://www.py4e.com/

Answers

Here's a sample spreadsheet for your payroll:

The Spreadsheet

Employee Name Hourly Rate Hours Worked Total Pay Tax Rate Taxes Withheld Net Pay

Sean $8.25 10 =B2*C2 5% =D2*E2 =D2-F2

Justine $9.00 30 =B3*C3 6% =D3*E3 =D3-F3

In this spreadsheet, we have columns for the employee name, hourly rate, hours worked, total pay, tax rate, taxes withheld, and net pay.

For each employee, we use a formula to calculate their total pay based on their hourly rate and hours worked. The formula used in the Total Pay column is "=hourly rate * hours worked".

We also have a column for tax rate, where we input the percentage at which the employee is taxed. Using this tax rate, we calculate the taxes withheld from the employee's pay in the Taxes Withheld column. The formula used in the Taxes Withheld column is "=total pay * (tax rate/100)".

Finally, we calculate the net pay for each employee by subtracting the taxes withheld from their total pay in the Net Pay column. The formula used in the Net Pay column is "=total pay - taxes withheld".

Answers

Answer:

import java.util.Scanner;

public class Linkify {

public static void main(String[] args) {

int[][] records = {

{1232, 10, 23, 45, 56},

{2343, 45, 43, 24, 78},

{2343, 34, 45, 45, 45},

{3423, 67, 65, 65, 56}

};

Scanner input = new Scanner(System.in);

int choice;

do {

System.out.println("MENU");

System.out.println("1. View all students' records");

System.out.println("2. View a student's records by ID");

System.out.print("Please enter your choice: ");

choice = input.nextInt();

switch(choice) {

case 1:

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

System.out.printf("| %-9d | %-5d | %-5d | %-8d | %-5d |\n",

records[i][0], records[i][1], records[i][2],

records[i][3], records[i][4]);

}

break;

case 2:

System.out.print("Enter a student ID: ");

int id = input.nextInt();

boolean found = false;

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

if(records[i][0] == id) {

System.out.printf("| %-9d | %-5d | %-5d | %-8d | %-5d |\n",

records[i][0], records[i][1], records[i][2],

records[i][3], records[i][4]);

found = true;

break;

}

if(!found) {

System.out.println("Invalid ID, please try again.");

}

break;

default:

System.out.println("Invalid choice, please try again.");

break;

}

System.out.println();

} while(choice != 1 && choice != 2);

input.close();

}

Explanation:

This program first initializes a 2D array called records with the student records data. It then displays a menu with two choices: 1) view all student records, or 2) view a specific student's record by ID.

The program uses a do-while loop to keep displaying the menu and accepting input until the user chooses either option 1 or option 2. Inside the switch statement, the program either loops through the entire records array to print all student records or prompts the user to enter a student ID and searches the records array for a matching ID to print the corresponding record.

The printf method is used to format the output into columns with fixed widths. If an invalid choice or ID is entered, an error message is displayed and the menu is displayed again. Once the user chooses either option 1 or option 2, the program exits.

A 3-character string, passCode, is read from input. Replace the second and third characters in passCode with '$' only if both are digit characters. Otherwise, passCode is not changed.

Ex: If the input is 435, then the output is:

4$$

Ex: If the input is 68p, then the output is:
68p

in c++

Answers

Here's the C++ code that implements the given functionality:

#include <iostream>

#include <string>

using namespace std;

int main() {

string passCode;

cin >> passCode;

if (passCode.length() >= 3 && isdigit(passCode[1]) && isdigit(passCode[2])) {

passCode[1] = '$';

passCode[2] = '$';

}

cout << passCode << endl;

return 0;

}

How to explain the program

The program reads a string input passCode from the user and checks if it has at least 3 characters and if the second and third characters are digits. If both conditions are met, it replaces the second and third characters with the '$' character. Finally, it prints the updated passCode string to the console.

Note that the isdigit function from the <cctype> library is used to check if a character is a digit. The string class from the <string> library is used to represent the passCode string.

Learn more about program on

https://brainly.com/question/26642771

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PLS HELP
In terms of data types, which of the following is an integer?
A) t
B) Boolean
C) -8.14567
D) 07/13/2001

Answers

It would be C because its the only answer with only numbers

how do i solve this. step by step

Answers

The table of values of the kids name and the ages, hat and animal when completed is shown below

Completing the table of values

Based on the given information, we can make the following deductions:

Only the 10.year old kid has the same initial in his/her name and in his/her beloved animal

So, we have

Gorilla - Gabriel or

Lion - Lucas

Gabriel either has a green hat or loves the gorilla

So, we have

Gabriel -- Green or Gorilla

Lion - Lucas

The crocodile is either Zaira's favorite, or the kid with the white hat's favorite.

This means that

Zaira --- Crocodile or White hat --- Crocodile

Neither Gabriel nor Lucas are 12

Gabriel -- 11 or 13

Gabriel is 1 year older than the kid with the red hat and Neither of them love the zebra

This means that

Red hat --- 12

Gabriel -- Green or Gorilla -- 13

So, we have the following:

Kid's Age Kid's Name Hat Color Favorite Animal

13 Gabriel Green Lion

10 Zaira White Crocodile

12 Lucas Red Lion

11 Charlotte Blue Zebra

Answers

Answer:

What is Microsoft Office?

- Microsoft Office, or simply Office, is a discontinued family of client software, server software, and services developed by Microsoft. It was first announced by Bill Gates on August 1, 1988, at COMDEX in Las Vegas.

Functions of MS Office

- Microsoft Office is a suite of applications designed to help with productivity and completing common tasks on a computer. You can create and edit documents containing text and images, work with data in spreadsheets and databases, and create presentations and posters.

which of the following is true about saving

Answers

Answer:

a. Saving and investment can never be undertaken together by the same person.

b. Saving and investment must always be undertaken by the same person.

c. If investment is going to be undertaken, someone must save.

d. There is no relationship between saving and investment; people can invest without having to save.

Explanation:

C because if you start early you don’t have to wait.

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