If I execute the expression x <- 4L in R, what is the class of the object `x' as determined by the `class()' function?

Answer:

A

Explanation:

Answer:

Answered below

Explanation:

Recursion refers to the process of a function calling itself within its own definition. It calls itself repeatedly until a base condition is met and the loop breaks.

The advantages of recursion over loops include;

A) Recursion reduces time complexity.

B) Recursion is better at tree traversal and graphs.

C) Recursion reduces the time needed to write and debug code and also adds clarity to code.

Disadvantages of recursion include;

A) Recursion uses more memory because each function call remains in stack until the base case is met.

B) Recursion can be slow.

C) Recursion

Answer:

The time is called "Access time"

Explanation:

Basically it is the time taken to retrieve information/data

What is access time?

It is the time taken by a storage device to located information and process the information often times the access time is faster in hard drives when compared to other drives like Optical drives.

Another good analogy or description of access time is the time taken to order a product online and when it is delivered to you in your house

Answer: provided in the explanation section

Explanation:

Note: take note for indentation so as to prevent error.

So we import com.google.common.collect.Multimap;

import java.util.Collection;

import java.util.Map;

class Main {

   public static void main(String[] args) {

       // key as studentId and List of Profile as value.

       Multimap<String,Profile> multimap = ArrayListMultimap.create();

       multimap.put("id1", new ExamProfile("examStudentId1"));

       multimap.put("id1", new ELearningProfile("userId1"));

       multimap.put("id2", new ExamProfile("examStudentId2"));

       multimap.put("id2", new ELearningProfile("userId2"));

       // print the data now.

       for (Map.Entry<String, Collection<Profile>> entry : multimap.entrySet()) {

           String key = entry.getKey();

           Collection<String> value =  multimap.get(key);

           System.out.println(key + ":" + value);

       }

   }

}

// assuming String as the studentId.

// assuming Profile as the interface. And Profile can multiple implementations that would be

// specific to student.

interface Profile {

}

class ExamProfile implements Profile {

   private String examStudentId;

   public ExamProfile(String examStudentId) {

       this.examStudentId = examStudentId;

   }

}

class ELearningProfile implements Profile {

   private String userId;

   public ELearningProfile(String userId) {

       this.userId = userId;

   }

}

This code is able to iterate through all entries in the Google Guava multimap and display all the students name in the associated students profile.

Answer:

Here is the Python function:

def count_occurrences (string1 , string2):  # method that takes two strings as parameter and returns how many times second string occurs in first

   count = 0  #counts number of occurrence of string2 in string1

   for word in string1:  #iterates through each word of the string1

       for character in word:  #iterates through each character of each word in string1

           if character == string2:  # checks if the character in string1 is equal to the character of string2

               count = count + 1  #adds 1 to the count of string2 in string1

   return count  #returns number of times the string2 occurs in string1

#in order to check the working of the function add the following lines to the code:    

first_str = input("Enter the first string: ")  #prompts user to enter first string

second_str = input("Enter the second string (one character long): ") #prompts user to enter second string which should be one character long

occurrence = count_occurrences(first_str,second_str)  #calls count_occurrences method by passing both strings to it

print(second_str,"occurs",occurrence,"times in",first_str) #prints how many times the second_str occurs in the first_str on output screen

Explanation:

The program is well explained in the comments added to each statement of the above code. I will explain the program with an example:

Suppose

string1 = "hello world"

string2 = 'l'

So the method count_occurrences() should return how many times l occurs in hello world.

count is used to count the number of occurrences of l in hello world. It is initialized to 0.

The first loop iterates through each word of string1. The first word of string1 is "hello"

The second loop iterates through each character/letter of each word. So the first letter of "hello" word is 'h'.

The if condition if character == string2: checks if the character is equal to string2 i.e. l.

character = "h"

string2 = "l"

The are not equal so the program moves to the next character of word hello which is e. The if condition again evaluates to false because e is not equal to l. So the program moves to the next character of word hello which is l.

This time the if condition evaluates to true because

character = "l"

string2 = "l"

character == string2

l == l

So the if part is executed which has the following statement:

count = count + 1

So the count is added to 1. count was 0 previously. Now

count = 1

Next the program moves to the next character of word hello which is l. This time the if condition evaluates to true because the character l matches with string2. So count is again incremented to 1. count = 2.

Next the program moves to the next character of word hello which is o. The if condition evaluates to false as o does not match with string2 i.e. l. So the count remains 2.

Next the first loop moves to the next word of the string1 = "world". The inner (second) for loop iterates through each character of "world" from "w" to "d" and checks if any character is equal to string2. Only one character is equal to string2 in "world". So count is incremented to 1. Hence count = 3

After the loop ends the statement return count returns the number of times string2 occurs in the string1. So the output is:

l occurs 3 times in hello world  

Answer:

def count_occurrences(sentence, thing_to_count):

   times = 0

   for word in sentence:

       for letter in word:

           if letter == thing_to_count: times += 1

   return times

Explanation:

I got 100%

Answer:  d. colors = {"red", "orange", "yellow", "green", "blue", "indigo", "violet"}

Explanation:

We use "{}" to write a set in it.

Also, the names of the colors are strings so we use inverted commas ("") to express them.

So, the set named colors that contains the 7 colors in a rainbow will be:

colors = {"red", "orange", "yellow", "green", "blue", "indigo", "violet"}

Hence, the correct option is d.

Answer:

Embed is used to insert a new linked Excel worksheet into a PowerPoint presentation

Hope this answer correct :)

Answer:

most developers incorporate a report a bug feature, if you cannot find it search online or go to the website on the software.

Explanation:

Answer:

A. True

Explanation:

Home communications involves automating home. It includes controlling the air-con,water heater, webcam, etc. A

Answer:

The answer is "Option B".

Explanation:

In external networking, it establishes the informal links beyond the size of the firm, which supports its career, and these networks may be used for help, invaluable guidance.

This system would be a different point of view to provide the privacy protection for the system connectivity, and in the internal system protects its system protects all its data, that's why it is false.

Answer:

A) True

Explanation:

Objects are known as reference types, meaning that they are always accessed by references, not copied. When a method is called, passing an object to it, Java passes a reference of that object to the method and when that reference is modified, the changes can be seen in the object itself. Therefore a mutable object can be mutated anywhere- either from where it is created or by a method it is passed to. Hence the need to always use privacy modifier keywords such as public, private or protected, to determine the exposure of class properties and methods.

Answer:

Describe your greedy algorithm in pseudocode. What is its runtime?

Answer:

Information Disclosure

Explanation:

Hello, the fact that the attacker was able to gather information from within the embedded HTML code suggests that the original developer did not properly store information, revealing potential issues or vulnerabilities in his/her design.

The STRIDE model stands for Spoofing, Tampering, Repudiation, Information Disclosure, Denial of Service, and Elevation of Privilege.

Using the STRIDE model, one would say this would be a simple information disclosure attack, since the attacker used retrieved information to breach the system.

Cheer.

Answer:

The program written in Python is as follows: (See Attachments for source file and output)

def cartesian(AB):

     if not AB:

           yield ()

     else:

           for newlist in AB[0]:

                 for product in cartesian(AB[1:]):

                       yield (newlist,)+product  

A = []

B = []

alist = int(input("Number of items in list A (10 max): "))

while(alist>10):

     alist = int(input("Number of items in list A (10 max): "))

blist = int(input("Number of items in list B (10 max): "))

while(blist>10):

     blist = int(input("Number of items in list B (10 max): "))

print("Input for List A")

for i in range(alist):

     userinput = int(input(": "))

     A.append(userinput)

print("Input for List B")  

for i in range(blist):

     userinput = int(input(": "))

     B.append(userinput)  

print(list(cartesian([A,B])))

Explanation:

The function to print the Cartesian product is defined here

def cartesian(AB):

This following if condition returns the function while without destroying lists A and B

    if not AB:

         yield ()

If otherwise

    else:

The following iteration generates and prints the Cartesian products

         for newlist in AB[0]:

              for product in cartesian(AB[1:]):

                   yield (newlist,)+product

The main method starts here

The next two lines creates two empty lists A and B

A = []

B = []

The next line prompts user for length of list A

alist = int(input("Number of items in list A (10 max): "))

The following iteration ensures that length of list A is no more than 10

while(alist>10):

    alist = int(input("Number of items in list A (10 max): "))

The next line prompts user for length of list B

blist = int(input("Number of items in list B (10 max): "))

The following iteration ensures that length of list B is no more than 10

while(blist>10):

    blist = int(input("Number of items in list B (10 max): "))

The next 4 lines prompts user for input and gets the input for List A

print("Input for List A")

for i in range(alist):

    userinput = int(input(": "))

    A.append(userinput)

The next 4 lines prompts user for input and gets the input for List B

print("Input for List B")  

for i in range(blist):

    userinput = int(input(": "))

    B.append(userinput)

This line calls the function to print the Cartesian product

print(list(cartesian([A,B])))

Answer:

1. week eyesight

2. weak brain power

3. loss of concentration...

hope it helps u

Answer:

A

Explanation:

Answer: A) application programs

Explanation: The problem solving capability of a computer system is made possible through the use of certain programs or group of programs specifically designed to tackle, manage or solve certain problems or task for the end users. Application programs are numerous and the problems at which they are targeted are diverse and usually different. Such that users would have to application programs based on the problem at hand. Application programs often leverage system capability and resources to help the fuction of written programs designed as applications for end users. Application programs includes : Microsoft office suite used to solve business related tasks such as writing, calculation, scheduling and so on., gaming applications and so on.

Answer:

Here is the GamePoints constructor:

GamePoints::GamePoints() :

/* Your code goes here */

{

teamLions = 500;

teamDolphins = 500;

}    

Explanation:

Here is the complete program:

#include  //to use input output functions

using namespace std; //to identify objects like cin cout

class GamePoints {  //class GamePoints

   public: GamePoints(); // constructor of GamePoints class

   void Start() const;  //method of GamePoints class

   private: //declare data members of GamePoints class

   int teamDolphins; // integer type private member variable of GamePoints

   int teamLions; }; // integer type private member variable of GamePoints

   GamePoints::GamePoints()  //constructor

    { teamLions = (500), teamDolphins= (500); }   //assigns 500 to the data members of teamLions  and teamDolphins of GamePoints class

   void GamePoints::Start() const    { //method Start of classs GamePoints

       cout << "Game started: Dolphins " << teamDolphins << " - " << teamLions << " Lions" << endl; }  //displays the values of teamDolphins and teamLions i.e. 500 assigned by the constructor

       int main() //start of main() function

       { GamePoints myGame;  // creates an object of GamePoints class

       myGame.Start(); //calls Start method of GamePoints class using the object

       return 0; }

The output of the program is:

Game started: Dolphins 500 - 500 Lions                    

Answer:

Following are the command to this question:

"ls -a ~/UnixCourse/fileAsst > listing.dat"

Explanation:

The above-given code will create a file, that is "listing.dat", and this file will be created in your current directory, which will include the list of all files in the file-asst directory.

In this, Is command is used that uses the directory that is "UnixCourse/fileAsst" and inside this, it will create the "dat" file that is "listing".

Answer:

d.

for line in infile :

   print(line)

Explanation:

for loop is used to iterate through the each line of the file using line variable. The file is accessed using the object infile. For example if the file name is "file.txt" and it is opened in read mode. It contains the following lines:

hi there friend

how are you

what are you doing

Then the above given chunk of code gives the following output

hi there friend

how are you

what are you doing

At each iteration each line of the the file is printed on the output screen. The print() method is used to display these lines in output.

Answer: dog

null

pet

Explanation:

taking into condiserations the various animals and their tag given to them;

OUTPUT :

dog

null

pet

PROOF:

Where the Initially map : {}

after map.put('D', "dog"), map : {'D':"dog"}

after map.put('P', "pig"), map : {'D':"dog", 'P':"pig"}

after map.put('C', "cat"), map : {'D':"dog", 'P':"pig", 'C':"cat"}

after map.put('P', "pet"), map : {'D':"dog", 'P':"pet", 'C':"cat"}, what this does is replace the  value of P with "pet"

map.get('D') prints dog.

map.get('E') prints null, key is not present

map.get('P') prints pet

cheers I hope this helped !!

Answer:

b. design. Is your answer

Answer:

computer and technologycomputer and technology

Explanation:

computer and technologycomputer and technology

Answer:

What colors does she like most, and what colors best correlate with the subject of the website.

Explanation:

You want to have the color relate to the subject of the website, or just favorites!

Answer:

Storyboarding.

Answer:

A metropolitan area network is one step up from a local area network in geographical range.

Explanation:

A metropolitan area network is one step up from a local area network in geographical range.

A network is a group of devices connected together for communication. Networks can be classified according to the area they cover, A metropolitan area network is smaller than a wide area network but larger than a local area network.

A local area network consist of computers network in a single place. A group of LAN network form a metropolitan network

A metropolitan network is a network across a city or small region. A group of  MAN form a wide area network.

Answer:

Answered below

Explanation:

An SQL retrieval query is made up of up to six clauses that must be coded in a specific sequence and they consist of;

1) SELECT - This clause allows you list the columns you want.

2) FROM - This clause indicates the tables you are retrieving information from.

3) WHERE - The where clause indicates a condition.

4) GROUP BY - Let's you group your data into specific and more meaningful information.

5) HAVING - Puts a condition in your group.

6) ORDER BY - Orders your result rows in ascending or descending order.

Answer:

They take a step-by-step approach to performing a task.

They break the task into manageable steps.

They identify the tasks that will repeat.

They can be written in a computer language to create a program for a computer to follow.

Explanation:

An algorithm is a step by step process that needs to be followed in order to solve logical, mathematical, well-defined instructions.

An everyday example of an algorithm is a recipe because it gives you steps to do in order to complete a task.

In computing terms, algorithms can be represented with flow charts, pseudocodes, or high-level languages.

Some of its characteristics include:

Answer:

So your answer will be

A.

C.

D.

E.

Explanation:

Edge2021

Answer:

A. digital device and screen size.

Explanation:

A​ "responsive design" for mobile applications is a design that responds to a​ user's digital device and screen size.

In Computer programming, a responsive web design makes it possible for various websites to change layouts in accordance with the user's digital device and screen size.

Hence, an end user's behavior and environment influences the outcome of their content and layout in a responsive design for mobile applications and websites.

This ultimately implies that, a responsive design is a strategic approach which enables websites to display or render properly with respect to the digital device and screen size of the user.