How do I do this?
Given an integer array nums, return a new array with a length of nums.length*2 where each element in nums appears twice in a row.
doubleElements([2, 3, 5, 4]) → [2, 2, 3, 3, 5, 5, 4, 4]
doubleElements([1, 2, 2, 3, 4, 4, 5, 6]) → [1, 1, 2, 2, 2, 2, 3, 3, 4, 4, 4, 4, 5, 5, 6, 6]
doubleElements([1, 2, 3, 4, 5, 6]) → [1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6]
I was given the layout of how the code would look but I'm baffled on what to put in the ??? that will return an array that has a duplicate of a previous element.
ex: [2,3] = [2,2,3,3]
public int[] doubleElements(int[] nums){
int[] ans = new int[nums.length*2];
for(int i = 0; i < nums.length; i++){
ans[??] = nums[i];
ans[??] = nums[i];
}
return ans;
}
Answers
import java.util.*;
class DMatrix {
public static void doubleElements(int[] nums) {
int[] ans = new int[nums.length*2];
for(int i = 1; i <= nums.length; i++){
ans[(2*i)-2] = nums[i-1];
ans[(2*i)-1] = nums[i-1];
}
for(int j=0; j<ans.length;j++) {
System.out.print(ans[j] + ", ");
}
}
public static void main(String[] args) {
int[] MyNums = {1,1,3,55,7,7,7,10};
doubleElements(MyNums);
}
}
Related Questions
Ned has presented you with the following table. The table is for a project that wants to compare nicknames people use in videogames (“handles”) with the ages of the player. There are hundreds of rows in the table, and the table will be widely shared. Propose three distinct changes Ned could make to improve the quality of the table’s presentation and make it more useful, and explain how or why the changes would improve the table.
An Excel spreadsheet is displayed. The column A represents name values (ex: A1 value is "name", A2 value is "Stan", A3 value is "Peggy", A4 value is "Dan".). The column B represents age values (B1 value is "age", B2 value is "15", B3 value is "18", B4 value is "12".). The column C represents years playing value (C1 value is "years playing", C2 value is "5", C3 value is "1", C4 value is "2".). The column D represents handle value (D1 value is "handle", D2 value is "IStanforJustice", D3 value is "Ace4Life", D4 value is "LiketobuytheWorld".). E is represented as an empty column with some of D's handle values overflowing over E's cells.
Answers
The distinct changes that Ned could make to improve the quality of the table’s presentation and make it more useful are:
The values (figure) should be place in the rows.The names (all) should be place in the column.Like terms should follow each other in the column so that there will be no mix up.Where can I use Excel?Excel is most frequently utilized in professional contexts. It is utilized, for instance, in operations management, performance reporting, human resource management, and business analysis. Excel uses a sizable group of prepared cells to arrange and edit data as well as perform mathematical operations.
Note that Microsoft created the spreadsheet application. Excel allows you to perform mathematical operations and arranges data in columns and rows. Windows, macOS, Android, and iOS are all supported. The first version was released in 1985 and has undergone numerous alterations since then.
Hence, starting Excel Presentation made easy includes:
Getting online template to use. Give your worksheets proper names.Clarify your header and title.Font dos and don'ts. ...Make room so you have breathing room, etc.Learn more about excel presentation from
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Ian is working as a sales manager. He has to generate sales reports using mathematical data that his team has collected. Which computer application can he use and which soft skill is essential for his job role?
Ian can use
to generate reports that have mathematical data. To be an efficient manager and direct his team members, Ian must have good
skills.
Re
Answers
Ian can use a spreadsheet application to generate reports that have mathematical data. To be an efficient manager and direct his team members, Ian must have good analytical skills .
How is the spreadsheet used in business?The term "spreadsheet" refers to a computer program that displays data in a two-dimensional grid along with formulas that link the data. An accounting ledger page that displays various quantitative data useful for managing a business is what a spreadsheet has traditionally been known as.
Note that Data organization, archiving, and tabular data analysis are all capabilities of spreadsheet software. Digital versions of paper accounting worksheets can be simulated by the application. Furthermore, they are capable of having multiple interconnected sheets with data displayed as text, numbers, or graphics.
Therefore, Decomposing information into more manageable categories in order to reach conclusions requires analytical skill. Logical reasoning, critical thinking, communication, research, data analysis, and creativity are some of the different categories that make up analytical skill.
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See full question below
Ian can use ____to generate reports that have mathematical data. To be an efficient manager and direct his team members, Ian must have good ____skills.
Regarding to the ethical consideration of technology, what are the challenges of big data analytics, Artificial intelligence, and internet of things
Answers
Privacy and surveillance, bias or discrimination, and perhaps the philosophical question of the role of human judgment are among the legal and ethical challenges that society faces as a result of Artificial Intelligence (AI).
The most critical ethical concerns that require further examination are privacy rights, data quality, and algorithm fairness in Big Data, Artificial Intelligence, and Machine Learning.
When vendors obtain private customer information and are not upfront about how they utilize the data, ethics becomes an issue. Vendors must also safeguard such information. When corporations or bad actors may extract personal information from gathered data and utilize it for malicious purposes, IoT, ethics, and privacy become inextricably linked.
What exactly is ethics?Ethics, often known as moral philosophy, is a philosophical field that "involves systematizing, defending, and advocating conceptions of good and bad action." The field of ethics, like aesthetics, is concerned with considerations of worth; together, these subjects compose the branch of philosophy known as axiology.
Ethical standards include rights standards such as the right to life, the right to be free from harm, and the right to privacy. Such ethical standards are adequate because they are supported by consistent and well-founded reasons.
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Colton is creating a presentation about Earth Day in PowerPoint Online. He created this slide, but he doesn't think it looks right. How can Colton balance his presentation slide?
A PowerPoint Online slide with the title Earth Day. There is paragraph on the slide that says, Earth Day is an annual event that is celebrated by many on April 22. Earth Day began in the 1970s and has evolved over the years. It is celebrated worldwide to inform others and support environmental protection. There are many different ways that people celebrate Earth Day. They might clean up litter, plant trees, create habitat protection posters, or plant community gardens, for example. It is a great way for communities to come together and protect the planet we live on. There is one image on the slide.
Group of answer choices
Add two more images to the slide
Make the image of Earth smaller and put his text in bullet points
Put his text in bullet points and reduce the amount of text on the slide
Reduce the title and text size
Answers
Since the Colton is creating a presentation about Earth Day in PowerPoint Online, the way that Colton can balance his presentation slide is option C: Put his text in bullet points and reduce the amount of text on the slide
What is a Powerpoint presentation's most crucial section?The introduction sets the tone for the rest of your presentation, making it the most crucial section. Usually within the first 15 seconds, its main goal is to grab the audience's attention.
Knowing your audience is the first and most crucial aspect of giving a presentation. You'll be well on your way to a successful presentation if you can put yourself in their position and discern what they require. As you prepare your presentation, keep the audience in mind.
Therefore, A great way to make sure that they will keep thinking about your presentation long after it is over is to leave the audience with a challenging question and lastly by reducing the wording, the presentation will look attractive.
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Expectations in ICT as a student
Answers
Expectations in ICT as a student are: Information and communication technologies (ICTs) are an essential part of daily life for students who live in a technologically advanced society. ICTs are made up of the digital systems, peripheral equipment, software, and hardware that make it possible to manage, store, process, and exchange data and information.
What are the Expectations in ICT as a student?You can increase the effectiveness of data management and processing by learning the necessary programming languages through ICT studies. Students will learn about essential tools, ranging from straightforward applications like Microsoft Excel to more specialized, analytical platforms like ZAP.
Note that ICT strand courses aim to impart information technology knowledge and skills to students. Students will learn how to create programs and webpages as part of the ICT curriculum.
Additionally, this will enable students to improve their animation and illustration abilities, which will help them succeed in creativity.
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Write a loop that continually asks the user what pets the user has until the user enters stop, in which case the loop ends. It should acknowledge the user in the following format. For the first pet, it should say You have one cat. Total # of Pets: 1 if they enter cat, and so on.
Sample Run
What pet do you have? lemur
What pet do you have? parrot
What pet do you have? cat
What pet do you have? stop
Sample Output
What pet do you have? lemur
You have one lemur. Total # of Pets: 1
What pet do you have? parrot
You have one parrot. Total # of Pets: 2
What pet do you have? cat
You have one cat. Total # of Pets: 3
What pet do you have? stop
Answers
Answer:
int counter = 0;
String userInput = "";
while (userInput != "stop") {
print "What pet do you have? ";
userInput = readInputLine();
if (userInput != "stop" ){
counter = counter + 1;
print "\nYou have one ";
print userInput;
print ". Total # of Pets: ";
print counter;
}
}
Explanation:
not sure what programming language you use, therefore the answer is pseudocode but it should give you an idea how to implement a piece of code for this problem.
Also, from the way you described the exercise I'm not sure if you always are supposed to reply with "you have one" + the pet or if you should count how often the same pet was entered.
is the ability of a system to grow as the volume of users increases.
Answers
Answer:
scalability
The ability of a computer application or product (hardware or software) to continue to function well when it (or its context) is changed in size or volume in order to meet a user need. Typically, the rescaling is to a larger size or volume. The rescaling can be of the product itself (for example, a line of computer systems of different sizes in terms of storage, RAM, and so forth) or in the scalable object's movement to a new context (for example, a new operating system).
JAVA PROJECT USING ( WHILE LOOP )
Bubble 1 and 2 are moving right 1 position.
Bubble 1 and 2 are moving right 1 position.
Bubble 1 and 2 are moving right 1 position.
Bubble 1 and 2 are moving left 1 position.
Bubble 1 and 2 are moving left 1 position.
Bubble 1 and 2 are moving left 1 position.
This is pass 2.
Bubble 1 and 2 are moving right 1 position.
Bubble 1 and 2 are moving right 1 position.
Bubble 1 and 2 are moving left 1 position.
Bubble 1 and 2 are moving left 1 position.
This is pass 3.
Bubble 1 and 2 are moving right 1 position.
Bubble 1 and 2 are moving left 1 position.
This is pass 4.
Bubble 1 is not moving.
Bubble 2 is not moving.
Answers
Explanation:
so, what's the question/problem ?
you want to know where the bubbles are after all 4 passes ? right at the original position.
you want to know, how such a while loop could look like ?
int i = 3;
// outer count-down to limit the passes
while (i >= 0) // making 4 passes
{
int j = i;
// inner count-down to limit the right moves
while (j > 0)
{
move(bubble1, right, 1);
move(bubble2, right, 1);
j = j - 1; // count-down
}
j = i;
// inner count-down to limit the left moves
while (j > 0)
{
move(bubble1, left, 1);
move(bubble2, left, 1);
j = j - 1; // count-down
}
i = i - 1; // outer count-down
}
*IN JAVA*
Program Specifications Write a program to calculate U.S. income tax owed given wages, taxable interest, unemployment compensation, status (dependent, single, or married), and taxes withheld. Dollar amounts are displayed as integers with comma separators. Ex: System.out.printf("Cost: $%,d\n", cost);
Note: this program is designed for incremental development. Complete each step and submit for grading before starting the next step. Only a portion of tests pass after each step but confirm progress.
Step 1. Within main() input wages, taxable interest, unemployment compensation, status (0=dependent, 1=single, and 2=married), and taxes withheld as integers.
Step 2 (2 pts). Complete the calcAGI() method. Calculate the adjusted gross income (AGI) that is the sum of wages, interest, and unemployment. Convert any negative values to positive before summing to correct potential input errors. Return the AGI. Note the provided code in main() calls calcAGI() and outputs the returned value. Submit for grading to confirm two tests pass.
Ex: If the input is:
20000 23 500 1 400
The output is:
AGI: $20,523
Step 3 (2 pts). Complete the getDeduction() method. Return the deduction amount based on status: (0) dependent = 6000, (1) single = 12000, or (2) married=24000. Return 6000 if the status is anything but 0, 1, or 2. Within main() call getDeduction() and output the returned value. Submit for grading to confirm four tests pass.
Ex: If the input is:
20000 23 500 1 400
The additional output is:
AGI: $20,523
Deduction: $12,000
Step 4 (2 pts). Complete the calcTaxable() method. Calculate taxable amount (AGI - deduction). Set taxable to zero if calculation results in negative value. Return taxable value. Within main() call calcTaxable() and output the returned value. Submit for grading to confirm six tests pass.
Ex: If the input is:
20000 23 500 1 400
The additional output is:
AGI: $20,523
Deduction: $12,000
Taxable income: $8,523
Step 5 (2 pts). Complete the calcTax() method. Calculate tax amount based on status and taxable income (see tables below). Tax amount should be stored initially as a double, rounded to the nearest whole number using Math.round(), and converted to an integer before returning. Within main() call calcTax() and output the returned value. Submit for grading to confirm eight tests pass.
Ex: If the input is:
50000 0 0 2 5000
The additional output is:
AGI: $50,000
Deduction: $24,000
Taxable income: $26,000
Federal tax: $2,720
Income Tax for Dependent or Single Filers
$0 - $10,000 10% of the income
$10,001 - $40,000 $1,000 + 12% of the amount over $10,000
$40,001 - $85,000 $4,600 + 22% of the amount over $40,000
over $85,000 $14,500 + 24% of the amount over $85,000
Income Tax for Married Filers
$0 - $20,000 10% of the income
$20,001 - $80,000 $2,000 + 12% of the amount over $20,000
over $80,000 $9,200 + 22% of the amount over $80,000
Step 6 (2 pts). Complete the calcTaxDue() method. Set withheld parameter to zero if negative to correct potential input error. Calculate and return amount of tax due (tax - withheld). Within main() call calcTaxDue() and output returned value. Submit for grading to confirm all tests pass.
Ex: If the input is:
80000 0 500 2 12000
The additional output is:
AGI: $80,500
Deduction: $24,000
Taxable income: $56,500
Federal tax: $6,380
Tax due: $-5,620
*CODE IN JAVA*
import java.util.Scanner;
public class LabProgram {
// Calculate AGI and repair any negative values
public static int calcAGI(int wages, int interest, int unemployment) {
/* Complete the method and update the return statement */
return -1;
}
// Calculate deduction depending on single, dependent or married
public static int getDeduction(int status) {
/* Complete the method and update the return statement */
return -1;
}
// Calculate taxable but not allow negative results
public static int calcTaxable(int agi, int deduction) {
/* Complete the method and update the return statement */
return -1;
}
// Calculate tax for single or dependent
public static int calcTax(int status, int taxable) {
/* Complete the method and update the return statement */
return -1;
}
// Calculate tax due and check for negative withheld
public static int calcTaxDue(int tax, int withheld) {
/* Complete the method and update the return statement */
return -1;
}
public static void main(String [] args) {
Scanner scan = new Scanner(System.in);
int wages = 0;
int interest = 0;
int unemployment = 0;
int status = -1;
int withheld = 0;
int agi;
// Step #1: Input information
// Step #2: Calculate AGI
agi = calcAGI(wages, interest, unemployment);
System.out.printf("AGI: $%,d\n", agi);
}
Answers
Using the knowledge in computational language in JAVA it is possible to write a code that income tax owed given wages, taxable interest, unemployment compensation, status, and taxes withheld.
Writting the code:import java.util.*;
class Main{
public static void main(String args[])
{
Scanner sc=new Scanner(System.in);
//take the inputs
int wages=sc.nextInt();
int interest=sc.nextInt();
int compensation=sc.nextInt();
int status=sc.nextInt();
int withheld=sc.nextInt();
int cost=calcAGI(wages,interest,compensation);
int deduction=getDeduction(status);
int taxable=getTaxable(cost,deduction);
int tax=calcTax(status,taxable);
int due=calcTaxDue(withheld,tax);
System.out.printf("AGI: $%,d\n", cost);
System.out.printf("Deduction: $%,d\n", deduction);
System.out.printf("Taxable income: $%,d\n",taxable);
System.out.printf("Federal tax: $%,d\n",tax);
System.out.printf("Tax due: $%,d\n",due);
}
static int calcAGI(int wages,int interest,int compensation)
{
int cost=wages+interest+compensation;
return cost;
}
static int getDeduction(int status)
{
if(status==0)
{
return 6000;
}
else if(status==1)
{
return 12000;
}
else if(status==2)
{
return 24000;
}
return 6000;
}
static int getTaxable(int AGI,int deduction)
{
int taxable=AGI-deduction;
return taxable;
}
static int calcTax(int status,int taxable)
{
int tax;
if(status==2)
{
if(taxable<=20000)
{
tax=(10*taxable)/100;
}
else if(taxable<=80000)
{
tax=2000+(12*(taxable-20000))/100;
}
else{
tax=9200+(22*(taxable-80000))/100;
}
}
else{
if(taxable<=10000)
{
tax=(10*taxable)/100;
}
else if(taxable<=40000)
{
tax=1000+(12*(taxable-10000))/100;
}
else if(taxable<=85000)
{
tax=4600+(22*(taxable-40000))/100;
}
else{
tax=14500+(24*(taxable-85000))/100;
}
}
return tax;
}
static int calcTaxDue(int withheld,int tax)
{
//make sure withheld is positive
if(withheld<0)
{
withheld=withheld*(-1);
}
int dueTax=tax-withheld;
return dueTax;
}
}
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All of the following is true about MS Online/OneDrive apps,
EXCEPT (NOT):
Select one:
O a. Cloud-based apps
Ob.
c.
C.
d.
Watered down version of MS Word, MS Excel, and
MS PowerPoint
Cost the end user money to use
Allows user to keep files on OneDrive or download
to local drive
Answers
All of the following is true about MS Online/OneDrive apps except (not): C. cost the end user money to use.
What is OneDrive?OneDrive can be defined as a cloud-based storage service and software application synchronization service that is designed and developed by Microsoft, and it was launched by Microsoft on the 7th of August, 2007.
Additionally, OneDrive typically offers to all of its registered customers (Microsoft users) a free amount of storage space (at least 5 gigabytes) that can be used to store various types of documents, share files, and synchronize files across different mobile platforms and other computer-based platforms such as:
WindowsMacOSX-box 360In conclusion, both MS Online and OneDrive applications are largely free and as such, they do not cost an end user money to use them.
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How can I round to 3 decimal places in python?
Attached is my code. Say I enter 25 for the feet per second prompt.
This is the output.
0.45719999999999994 kilometers per min
I want that number rounded to 3 decimal places.
def ftsecTokmin(x):
return x*0.018288
n = float(input("Enter the speed in feet per second: "))
print(ftsecTokmin(n), "kilometer per min")
Answers
To round to 3 decimal places in python, you need to write the code as follows:
n = float(input("Enter the value of n in ft/s: "))
def fsec_to_kmminn(n):
return (0.018288 * n)
print("speed_in_kmmin = ", round(fsec_to_kmminn(n),3))
Output: 0.457
Explain the python programming language.
High-level, all-purpose programming languages like Python are available. With the usage of extensive indentation, its design philosophy places an emphasis on code readability. Garbage collection and dynamic typing are features of Python.
Python is a general-purpose language, which means it may be used to make many various types of applications and isn't tailored for any particular issues.
It supports a variety of programming paradigms, including structured, functional, and object-oriented programming. Building websites and applications, automating processes and performing data analysis all frequently use Python.
Solution Explanation:
You can use the global round function to round up numbers to a decimal place. In a simple example, it can be used as
num = 20.4454
rounded3 = round(num, 3)
# to 3 decimal places
print(rounded3)
# 20.445
Here in the program mentioned in the question, to get three decimal places we have to add the function round in this way, print("speed_in_kmmin = ", round(fsec_to_kmminn(n),3)) to get the desired result.
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How do you read UML diagrams? for java code
Answers
A class diagram in the Unified Modeling Language (UML) is a form of static structure diagram that illustrates a system's classes, properties, operations, and relationships between objects to explain the structure of the system.
What is the system?A system is a group of moving or interrelated elements that act according to a set of rules to form a unified whole. A system, surrounded and influenced by its situation, is described by its boundaries, structure, and function and shown in its functioning. Systems are the subjects of study of systems theory and other schemes sciences.
Right-click a package in the Project tool window for which you wish to generate a diagram, then choose Diagrams | Show Diagram (Ctrl+Alt+Shift+U). Select Java Class Diagram from the list that appears. A UML diagram for classes and their dependents is produced by IntelliJ IDEA.
Therefore, A class diagram in the Unified Modeling Language (UML) is a form of static structure diagram that illustrates a system's classes
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Explain how and why staying informed about public issues is part of being a responsible citizen.
Answers
Staying informed about public issues is part of being a responsible citizen because information ensures that a citizen acts rightly. Under the law, for instance, ignorance is no excuse. When a person is informed, they act in a way that serves their own interests as well as the best interest of the state.
Who is a responsible citizen?A responsible citizen obeys all of the country's laws and regulations. They have the right to exercise all fundamental rights and obligations, including voting, paying taxes, and safeguarding the country against corruption.
A citizen's five essential obligations are as follows:
To support and defend the Constitution.Keep up to date on topics impacting your neighborhood.Take part in the democratic process.Obey and respect federal, state, and local laws.Respect others' rights, beliefs, and ideas.Participate in your neighborhood.Learn more about Citizenship:
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Describe a scenario in which an object that is not moving has more potential energy than an object that is moving. How does your scenario meet this criteria? Use specific language from the text to explain.
Answers
A scenario in which an object that is not moving has more potential energy than an object that is moving is given below
In order to understand how and why things act the way they do, we use the concept of energy. You can alter an object's energy by applying a force to it. An object must be accelerated or work must be done with that energy. Energy is referred regarded as a scalar since it lacks direction (as opposed to vectors).
Kinetic energy, potential energy, and energy in springs are other terms we use. It's impossible to grasp or touch energy. It is merely one more tool to aid in our comprehension of the environment. In science, energy is measured in units called joules.
Where does an object have a higher potential energy?Greater potential energy exists for higher objects with further to fall. The gravitational potential energy of a pair of equal-height objects is greatest for the heavier object.
Note that Position, not motion, determines an object's potential energy. It possesses positional energy. When objects are displaced from their equilibrium positions, the energy that was previously stored within them before being knocked out of equilibrium by chemical reactions, gravity, or elastic rebound is released.
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why the innovation is important to the economy, culture, and how it has advanced technology?
Answers
Innovation is the result of competition. To remain economically viable, an economy must encourage innovation. Innovation ensures that simpler, more efficient, and effective ways of doing stuff are discovered. When this happens, technology is said to be advancing.
What is Innovation?The actual execution of ideas that result in the introduction of new goods or services or improvements in the delivery of goods or services is referred to as innovation.
In other words, innovation may relate to anything new, such as an invention, or it can refer to the process of developing and presenting new items. A new product is generally the result of innovation, but it may also be a new way of doing something or even a big change.
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Suppose, you have to develop a system for a garments owner. He had two garments located in Mirpur and Savar. Now for financial problems, he dosed one and now he has one garments located in Savar. There are three types of clothing in the system- summer clothing, winter clothing and spring clothing. Summer clothing is made out of cotton and has an average weight of 60 grams. Winter clothing has an average weight of 95 grams and is made out of wool. Silk is used to make spring clothing, which has an average weight of 75 grams.
Now, using appropriate design pattern(JAVA), create a Garments class from which client code can request clothing by mentioning type of fabrics or by mentioning the name of season.
Answers
Here is the samle code for a Garments class from which client code can request clothing by mentioning type of fabrics or by mentioning the name of season.
public abstract class Garments
{
private String size;
private String color;
private String fabric;
public Garments(String Size, String Color)
{
this.size = size;
this.color = color;
}
public String getSize()
{
return this.size;
}
public String getColor()
{
return this.color;
}
public String getFabric()
{
return this.fabric;
}
What is Class in Programming?
A class is a fundamental building block in object-oriented programming. It is a template that describes the data and behavior associated with the instantiation of a class. Instantiating a class means creating an object (variable) of that class that can be used to access the class's member variables and methods.
A class is also known as a logical template because it is used to create objects that share common properties and methods.
An Employee class, for example, may contain all of the employee details in the form of variables and methods. When the class is instantiated, that is, when an object of the class (say e1) is created, we can access all of its methods and properties.
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The title specifies the title for the link, true or false?
Answers
What type of attack is occurring when a counterfeit card reader is in use?
Answers
Answer:
input validation vulnerability
Explanation:
usually crafted through a URL and sent to a victim and they open it unknowingly