Answer:
Pls check the site "examtopics"
U fill find ur questions there
Create a File: Demonstrate your ability to utilize a Linux command to create a text file. Create this file in the workspace directory: in. A text file showing the current month, day, and time (Title thisfile Time_File.txt.) II. Create a Directory: In this section of your project, you will demonstrate your ability to execute Linux commands to organize the Linux directory structure. a. In the workspace directory, create a new directory titledCOPY. III. Modify and Copy: Demonstrate your ability to utilize Linux commands to copy a file to a different directory and renameit. a. Copy the Time_File.txt file from the workspace directory to the COPYdirectory. b. Append the word COPY to the filename. IV. Execute the Script: Complete and execute the newly created script.
Answer: Provided in the explanation section
Explanation:
#So we Create a workspace directory
mkdir workspace
#let us browse inside the workspace
cd workspace/
#creating a Time_File.txt file
touch Time_File.txt
#confirming creation of Time_File.txt
ls
# Time_File.txt
#writing in the month day and time to Time_File.txt
date +%A%B%R >> Time_File.txt
#Let us confirm the content of Time_File.txt as month day and time
cat Time_File.txt
# ThursdayJune19:37
#making a COPY directory
mkdir COPY
#verifying creation of COPY
ls
# COPY Time_File.txt
# copying Time_File.txt to COPY
cp Time_File.txt COPY/
#check the inside COPY
cd COPY/
#verifying copying of Time_File.txt to COPY
ls
# Time_File.txt
#appending COPY to Time_File.txt name
mv Time_File.txt COPYTime_File.txt
#confirming append
ls
# COPYTime_File.txt
# Creating a NewScript.sh
touch NewScript.sh
# cocnfirming the function
ls
# COPYTime_File.txt NewScript.sh
# adding executable permission
chmod +x NewScript.sh
ls
COPYTime_File.txt NewScript.sh
# Running NewScript.sh
./NewScript.sh
# Time_File.txt
# ThursdayJune19:49
# COPY Time_File.txt
# Time_File.txt
# COPYTime_File.txt
# we repeat same as seen above using script
ls
# COPYTime_File.txt NewScript.sh workspace
Today, trending current events are often present on websites. Which of the following early developments in audiovisual technology is most closely related to this?
Answer: Newsreels
Explanation:
Options not included however with the early audio visual technologies known, the Newsreel is the closest when it comes to displaying news and current events.
Like the name suggests, Newsreels showed news and they did this of events around the world. They were short films that captured events and then displayed them in cinemas and any other viewing locations capable of showing them.
By this means, people were able to keep up to date with events around the world without having to read newspapers. The advent of news channels killed this industry and logically so.
Answer:
B: Newsreels
Explanation:
edg2021
The text states, "...newsreels began to gain popularity. They were short movies about current events around the world, usually shown prior to the main feature in movie theaters"
Which of the following would not be considered metadata for a spreadsheet file?
A) Read-only attributeB) Calculation inside the fileC) Name of the fileD) Full size
Answer:
B.
Explanation:
Metadata is a type of data that dispense details of other data. In simple terms, metadata can be defined as information of a file such as file name, attributes, etc.
In excel sheet, metadata works the same and helps to provide information about file name, author name, file size, attributes such as read-only, archieve, hidden, system, location of the file, date and time of creation, modification, or accessed, type of file, etc.
From the given options, the information that is not considered or included in metadata is calculation inside the file. Metadata in excel sheet does not include calculations inside the file. Thus option B is the correct answer
________models software in terms similar to those that people use to describe real- world objects.
A) Procedural programming
B) Object-oriented programming
C) Object-oriented design
D) None of the above
Answer:
The correct answer is C - Object-oriented design.
Explanation:
Object-oriented design defines code or software as objects. These objects represent instances of a real-life situation. For example, an animal class consist of a dog, cat, lion. A dog therefore is n instance of the animal class.
Objects are described as having properties and behaviours. Properties are variables, arrays, sets, maps etc and behaviours are the functions and methods that manipulate these data.
Object-oriented programming is done based on this design.
Which of the following is an example of self-directed learning?
Answer:
Self directed learning is an the strategy the students guidance from that teacher decide and students they will learn.
Explanation:
Self directed learning its a effective technique that can anyone to use the learning in a school time into a curriculum program, there are many type of characteristics:- (1) Flexibility (2) Autonomy (3) Self acceptance (4) Playfulness.
Self directed learning is to perform that allow us to the initiative own learning, students grow and improve the motivation and integrity to the learning.Self directed learning to that contain the self learning with the internet program, and apply to the skill outside of the area learning.Self directed learning to the set of goal that the business and career and the achieve of the goal.Self directed learning to contain your interests and motivate yourself and reflecting the learners.Self directed learning is to provide learn strategies and methods to achieve the better lives and behavior can translate.Self directed is the value to the teamwork and help the students and learner work in better team.Self learning is perform physical side learning and the focus on the mental side, and they we are putting in heads.Self learning is to contain the better your learning standards and to measure learning goals.Answer:
B
I got it on edge
11. To select Access database entries, you should be in
O A. Datasheet view.
O B. Design view.
O C. Query wizard.
O D. Form Design.
Answer: A
Explanation:
Answer:
Design view
Explanation:
did it on edge
Which of these file types does not share info in a spreadsheet?
A) CSV
B) Excel
C) PNG
D) all have
Answer:
C) PNG
Explanation:
PNG which is an acronym for Portable Network Graphics is a form of images file format and it does not share info in a spreadsheet. The files that share info on the spreadsheet are the following:
1. Text = .txt
2. Formatted Text = .prn
3. CSV = .csv
4. Data Interchange Format = .dif
5. Symbolic Link = .slk
6. Web page = .html, .htm
7. XML Spreadsheet = .xml
Hence, in this case, the file types that do not share info in a spreadsheet is PNG
PNG does not share info in a spreadsheet
Comma-separated values (CSV) file is a text file that stores data in lines. Each record is separated by commas and is made up of fields. CSV can store data in tabular forms like spreadsheet or database.
Excel files use a Binary Interchange File Format that store data like numbers, formula and spreadsheet data.
Portable Graphics Format (PNG) is a file format that is used to store images. It does not share info in spreadsheet.
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What are video games and what have they meant for society?
video games are a source of entertainment for people especially children.
it helps relieve stress for adults or grown ups.
society sees video games as a negative impact on children and that it wastes their time.
Answer:
video games are games played for fun and enjoyment they are types of video games we have shooting video games, football video games, sport video games and so much more. video games are for fun and not all video games are meant for society. video games like football should be meant for sociey ehere everyone can come together to play games like these bring people and society together.
What three conditions must be satisfied in order to solve the critical section problem?
Answer:
Explanation:
The critical section problem revolves around trying to ensure that at most one process is executing its critical section at a given time. In order to do so, the three following conditions must be met.
First, no thread may be executing in its critical section if there is already a current thread executing in its critical section.
Second, only the specific threads that are not currently occupied executing in their critical sections are allowed to participate in deciding which process will enter its critical section next.
Third, a preset limit must exist on the number of times that other threads are allowed to enter their critical state after a thread has made a request to enter its critical state.
What AI technology is commonly used to describe Input A to Output B mappings?
Answer:
Supervised learning
Explanation:
Supervised learning is a term widely used in computer engineering that describes a form of the machine learning process, which is based on understanding a task that maps an input to an output based on illustration input A to output B pairs.
Hence, in this case, AI technology that is commonly used to describe Input A to Output B mappings is called SUPERVISED LEARNING
E-mail is the most common distributed application that is widely used across all architectures and vendor platforms.a) trueb) false
Answer:
A. True.
Explanation:
E-mail is an acronym for electronic mail and it can be defined as an exchange or transmission of computer-based data (messages) from one user to another over a communications network system.
Also, a distributed application refers to a software program that is capable of running on several computer systems and can communicate effectively through a network.
E-mail is the most common distributed application that is widely used across all architectures and vendor platforms because it primarily operates on a client-server model, by providing users with the requested services through the Simple Mail Transfer Protocol (SMTP) using the standard port number of 25.
To move a file or folder in Microsoft Windows you can click and hold down the left mouse button while moving your mouse pointer to the location you want the file or folder to be, which is also known as
Answer:
**UNSURE** Cutting and pasting*
Explanation:
Its essentially the same thing. Nowadays File Explorer will instead copy the file to the new location in certain circumstances, such as if the destination is a separate drive.
*I'm not sure if this is the type of answer you are looking for, as I'm not sure what context this is in. If you're looking for a specific term regarding that type of action in the user interface, this might not be it.
In troubleshooting a boot problem, what would be the point of disabling the quick boot feature in BIOS/UEFI setup?
Performs the process faster because it skips a check of the memory.
In order to place a gradient within a stroked path for type, one must convert the type using the __________
Answer:
in order to place a gradient within a stroked path for type ,one must convert the type 17316731
Which type of virus includes protective code that prevents outside examination of critical elements?
Answer:
Armoured viruses
Explanation:
Armoured viruses are computer viruses that have been found to be very dangerous, Armoured viruses ar designed to protect itself against any attempt to detect or trace Its activities. They have different ways through which they bypass antivirus software applications in a computer system, making it very difficult to eliminate from an infected system.
A keyboard would be considered____. Select 2 options.
Answer:
hardware
an input device
Explanation:
the ohter options are not applicable
The Security Configuration Wizard saves any changes that are made as a __________ security policy which can be used as a baseline and applied to other servers in the network.
Complete Question:
The Security Configuration Wizard saves any changes that are made as a __________ security policy which can be used as a baseline and applied to other servers in the network.
Group of answer choices
A. user- or server-specific
B. port- or program-specific
C. role- or function-specific
D. file or folder-specific
Answer:
C. role- or function-specific.
Explanation:
The Security Configuration Wizard (SCW) was first used by Microsoft in its development of the Windows Server 2003 Service Pack 1. The main purpose of the SCW is to provide guidance to network administrators, secure domain controllers, firewall rules and reduce the attack surface on production servers.
Generally, The Security Configuration Wizard saves any changes that are made as a role- or function-specific security policy which can be used as a baseline and applied to other servers in the network.
After a network administrator checks the Group policy, any changes made as a role- or function-specific security policy by the Security Configuration Wizard (SCW) is used as a baseline and can be applied either immediately or sometimes in the future to other servers in the network after it has been tested in a well secured environment.
Additionally, the Microsoft Security Configuration Wizard (SCW) assist administrators in running the following;
1. Network and Firewall Security settings.
2. Auditing Policy settings.
3. Registry settings.
4. Role-Based Service Configuration.
select the correct answers. What are examples of real-time applications?
My answer to the question are:online money transfer,news update,blog post.
Write a recursive definition of x^n, where n≥0, similar to the recursive definition of the Fibonacci numbers. How does the recursion terminate?
Answer:
Following are the program to this question:
#include <iostream>//defining header file
using namespace std;
int recurs(int x, int n)//defining a method recurs that accepts two parameter
{
if(n==0)//defining if block that checks n value
{
return 1;//return value 1
}
else//defining else block
{
return x*recurs(x,n-1);//use return keyword that retun value
}
}
int main()//defining main method
{
cout<<recurs(5,3); //use print method to call recurs method
return 0;
}
Output:
125
Explanation:
In the above-given program, the integer method "recurs" is declared which accepts, two integer variables, which are "x, n", inside the method the if conditional statement is used.
In the if block, it checks the value of n is equal to "0" if this condition is true, it will return a value, that is 1. Otherwise, it will go to the else block, in this block, it will use the recursive method to print its value.Recursions are functions that execute itself from within.
The recursive definition x^n in Python, where comments are used to explain each line is as follows:
#This defines the function
def recursion(x, n):
#This returns 1, if n is 0
if(n==0):
return 1
#This calculates the power recursively, if otherwise
else:
return x*recursion(x,n-1);
The function terminates when the value of n is subtracted till 0
Read more about recursions at:
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Write code to complete PrintFactorial()'s recursive case. Sample output if userVal is 5:5! = 5 * 4 * 3 * 2 * 1 = 120
Answer:
Here is the C++ program:
#include <iostream> //to use input output functions
using namespace std; //to access objects like cin cout
void PrintFactorial(int factCounter, int factValue){ // method definition
int nextCounter = 0; // initialize value of nextCounter by 0
int nextValue = 0; // initialize value of nextValue by 0
if (factCounter == 0) { //base case 1: 0! = 1
cout << "1" << endl; } //displays 1 in the output
else if (factCounter == 1) { //base case 2: 1! = 1
cout << factCounter << " = " << factValue << endl; } //displays 1 in result
else { //recursive case
cout << factCounter << " * ";
nextCounter = factCounter - 1; //decrements factCounter by 1
nextValue = nextCounter * factValue; // multiplies values of nextCounter and factValue and assigns the result to nextValue
PrintFactorial( nextCounter, nextValue); } } //recursively calls PrintFactorial method to compute the factorial
int main() { //start of main function
int userVal = 0; //initialize the userVal variable to 0
userVal = 5; //assigns 5 to the userVal variable
cout << userVal << "! = "; //prints the userVal with ! =
PrintFactorial(userVal, userVal); } //calls PrintFactorial method to compute the factorial of userVal i.e. 5
Explanation:
I will explain the logic of the program with an example.
The value of variable userVal is 5
This is passed to the method PrintFactorial()
1st step:
void PrintFactorial(int factCounter, int factValue) becomes:
PrintFactorial(5, 5)
PrintFactorial method has two base conditions which do not hold because the factCounter is 5 here which is neither 1 nor 0 so the program control moves to the recursive part.
cout << factCounter << " * ";
In recursive part, the above statement prints the value of factCounter followed by an asterisk on the output screen. So this prints:
5 *
nextCounter = factCounter - 1;
This statement decrements the value of factCounter by 1 and assigns it to nextCounter as:
nextCounter = 5 - 1;
nextCounter = 4
nextValue = nextCounter * factValue; multiplies the value of nextCounter by factValue and stores result in nextValue . So
nextValue = 4 * 5
nextValue = 20
PrintFactorial( nextCounter, nextValue); this statement calls the PrintFactorial() recursively to perform the above steps again until the base condition is reached. This statement becomes:
PrintFactorial(4,20)
2nd step:
PrintFactorial method has two base conditions which do not hold because the factCounter is 4 here which is neither 1 nor 0 so the program control moves to the recursive part.
cout << factCounter << " * ";
In recursive part, the above statement prints the value of factCounter followed by an asterisk on the output screen. So this prints:
5* 4 *
nextCounter = factCounter - 1;
This statement decrements the value of factCounter by 1 and assigns it to nextCounter as:
nextCounter = 4 - 1;
nextCounter = 3
nextValue = nextCounter * factValue; multiplies the value of nextCounter by factValue and stores result in nextValue . So
nextValue = 3 * 20
nextValue = 60
PrintFactorial( nextCounter, nextValue); This statement becomes:
PrintFactorial(3,60)
3rd step:
PrintFactorial method has two base conditions which do not hold because the factCounter is 3 here which is neither 1 nor 0 so the program control moves to the recursive part.
cout << factCounter << " * ";
In recursive part, the above statement prints the value of factCounter followed by an asterisk on the output screen. So this prints:
5* 4 * 3 *
nextCounter = factCounter - 1;
This statement decrements the value of factCounter by 1 and assigns it to nextCounter as:
nextCounter = 3 - 1;
nextCounter = 2
nextValue = nextCounter * factValue; multiplies the value of nextCounter by factValue and stores result in nextValue . So
nextValue = 2 * 60
nextValue = 120
PrintFactorial( nextCounter, nextValue); This statement becomes:
PrintFactorial(2,120)
4th step:
PrintFactorial method has two base conditions which do not hold because the factCounter is 2 here which is neither 1 nor 0 so the program control moves to the recursive part.
cout << factCounter << " * ";
In recursive part, the above statement prints the value of factCounter followed by an asterisk on the output screen. So this prints:
5* 4 * 3 * 2 *
nextCounter = factCounter - 1;
This statement decrements the value of factCounter by 1 and assigns it to nextCounter as:
nextCounter = 2 - 1;
nextCounter = 1
nextValue = nextCounter * factValue; multiplies the value of nextCounter by factValue and stores result in nextValue . So
nextValue = 1 * 120
nextValue = 120
PrintFactorial( nextCounter, nextValue); This statement becomes:
PrintFactorial(1,120)
Now the base case 2 evaluates to true because nextCounter is 1
cout << factCounter << " = " << factValue statement prints the value of factCounter i.e. 1 followed by an equal sign = followed by value of factValue i..e 120
So the output of the above program with userVal = 5 is:
5! = 5 * 4 * 3 * 2 * 1 = 120
Recursion functions are functions whose execution is controlled from within the function
The PrintFactorial()'s recursive caseThe code segment written in Python, where comments are used to explain each action is as follows:
#This defines the function
def PrintFactorial(n):
#if n is 1, this returns the value of n
if n == 1:
return n
#If otherwise
else:
#This calculates the factorial, recursively
return n*PrintFactorial(n-1)
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Which one of the following statements is false? A. As storage is now cheap and plentiful, modern code management systems are less concerned with optimizing storage. B. Sub-version is the best-known, open-source code management product that is based around a centralized repository. C. In the open-source software development model, many different people can work independently on the code without any knowledge of what others are doing. D. The oldest and perhaps best-known system building tool is "Ant", which was originally developed in the 1970s for Unix.
Answer:
D. The oldest and perhaps best-known system building tool is "Ant", which was originally developed in the 1970s for Unix.
Explanation:
Ant often referred to Apache Ant is a computer software tool, though popularly considered oldest, was originally first built in the year 2000 by Unix, on Java platform, which is utilized as a component of plug-in development.
Hence, given the available options, the correct answer is Option D, because, Ant originally built in the year 2000 and not the year 1970, while the other statements are definitely correct.
Add a new method to the Point class and change the attributes (x, y) to private from the above question: public double distance(Point next) This method returns the distance between the current Point object and the next Point object in the parameter. The distance between two points is the square root of the sum of the square of the differences of the x and y coordinates: square root of ( (x2 – x1)2 + (y2 – y1)2 ). (6 points) In the Point class, add private to int x and int y. You will have to modify the RefereceX.java and Point.java to deal with this change of modifier from the public to private. (6 points) Based the question 4 codes with the above additions, you should have the following results ( 3 points to display results) inside addTox(..): 14 14 7 9 14 3 inside addTox(..): 18 18 7 9 14 18 distance of p1 from origin is 14.142135623730951 distance of p2 from origin is 18.439088914585774 distance between p1 and p2 is = 4.47213595499958 Code: public class Point { int x; int y; // Constructs a new point with the given (x, y) location. // pre: initialX >= 0 && initialY >= 0 public Point(int initialX, int initialY) { this.x = initialX; this.y = initialY; } // Returns the distance between this point and (0, 0). public double distanceFromOrigin() { return Math.sqrt(x * x + y * y); } // Shifts this point's location by the given amount. // pre: x + dx >= 0 && y + dy >= 0 public void translate(int dx, int dy) { this.x += dx; this.y += dy; } public double distance(Point next) { //help } } public class ReferenceX { public static void main(String[] args) { int x = 7; int y = 9; Point p1 = new Point(1, 2); Point p2 = new Point(3, 4); addToX(x, p1); System.out.println(x + " " + y + " " + p1.x + " " + p2.x); addToX(y, p2); System.out.println(x + " " + y + " " + p1.x + " " + p2.x); } public static void addToX(int x, Point p1) { x += x; p1.x = x; System.out.println(" inside addTox(..): " + x + " " + p1.x); } }
Answer:
Following are the code to this question:
public double distance(Point next) //defining distance method that accepts Constructor
{
int x1,x2,y1,y2;//defining integer variables
double d;//defining double variable dis
x1=this.x; //use x1 variable that use this keyword to store x variable value
y1=this.y;//use y1 variable that use this keyword to store y variable value
x2=next.x;//use x2 variable that use this keyword to store x variable value
y2=next.y;//use y1 variable that use this keyword to store y variable value
d=Math.sqrt((x1-0)*(x1-0) + (y1-0)*(y1-0));//use d variable that calculates distance between p1 to origin and store its value
d=Math.sqrt((x2-0)*(x2-0) + (y2-0)*(y2-0));//use d variable that calculates distance between p2 to origin and store its value
d=Math.sqrt((x2-x1)*(x2-x1) + (y2-y1)*(y2-y1));//calculating the distance from p1 to p2 and store its value
return d;//return dis value
}
Explanation:
In the above-given code, the double type method "distance" is defined, that accepts a constructor in its parameter, and inside the method, four integer variable "x1,x2,y1, and y2" and one double variable "d" is declared.
After holding the value of x and y into the declared integer variable the "d" variable is used, that uses the maths square method with an integer variable, which holds p1 to origin value, p2 to origin value, and the distance from p1 to p2, and use the return keyword for return its value.
Write a GUI program that calculates the average of what an employee earns in tips per hour. The program’s window should have Entry (font: Courier New) widgets that let the user enter the number of hours they worked and amount they earned in tips during they time. When a Calculate button is clicked, the program should display the average amount they got paid in tips per hour. Use the following formula: Tips per hour = amount of tips in dollars / hours.
Answer:
Explanation:
Using Code:
from tkinter import *
#object of Tk class to make GUI
root = Tk()
#creating a canvas to put labels, entries and button
canvas1 = Canvas(root, width = 300, tallness = 200)
canvas1.pack()
#label for number of hours worked
label1 = Label(root, text = "Hours : ", textual style = ('Courier', 10))
canvas1.create_window(80, 50, window = label1)
#entry for number of hours worked
entry1 = Entry(root, textual style = ('Courier', 10))
canvas1.create_window(200, 50, window = entry1)
#label for sum they earned in tips
label2 = Label(root, text = "Tips : ", textual style = ('Courier', 10))
canvas1.create_window(80, 80, window = label2)
#entry for sum they earned in tips
entry2 = Entry(root, text style = ('Courier', 10))
canvas1.create_window(200, 80, window = entry2)
#label for tips every hour
label3 = Label(root, text = "Tips Per Hour : ", textual style = ('Courier', 10))
canvas1.create_window(80, 150, window = label3)
#function to figure tips every hour
def TipsPerHour():
#getting estimation of hour
hours = int(entry1.get())
#getting estimation of tips
tips = int(entry2.get())
#calculating normal sum got paid in tips every hour
normal = tips/hours
#creating a name to show normal
label4 = Label(root, text = "$" + str(average), textual style = ('Courier', 10))
canvas1.create_window(170, 150, window = label4)
#button for compute
calculateButton = Button(root, text = "Compute", textual style = ('Courier', 10), order = TipsPerHour)
canvas1.create_window(170, 110, window = calculateButton)
#mainloop
root.mainloop()
Write an application that asks a user to enter an integer. Display a statement that indicates whether the integer is even or odd.
Answer:
in C++:
#include <iostream>
int main(){
int input;
std::cout<<"Enter a number: "<<std::endl;
std::cin>>input;
if(input%2==0){
std::cout<<" The number is even"<<std::endl;
}else{
std::cout<<"The number is odd"<<std::endl;
}
}
Explanation:
Getting user input as integer, and check if NUMBER÷2 have remainder=0 or no, if remainder==0 then number is even else number is odd
The most common type of monitor for a laptop or desktop is a
Answer:
LCD monitor
explanation
it incorporates one of the most advanced technologies available today.
True or False:
Input/output devices are capable of transferring information in only one direction.
Answer:
False
Explanation:
Input/output devices do NOT transfer information in only one direction.
Input devices receives the information while the output devices sends the information. The direction of the information being transferred between the input and output is NOT just in one direction.
Examples of input devices are keyboard, mouse, joy stick, scanner, etc.,
Examples of output devices are monitor (LED, LCD, CRT etc), printers (all types), plotters, projector, speaker(s), head phone, etc.
Write code to complete factorial_str()'s recursive case. Sample output with input: 5 5! = 5 * 4 * 3 * 2 * 1 = 120
Answer:
Here is the complete code to complete factorial_str()'s recursive case:
Just add this line to the recursive part of the code for the solution:
output_string += factorial_str(next_counter,next_value)
The above statement calls factorial_str() method recursively by passing the values of next_counter and next_value. This statement continues to execute and calls the factorial_str() recursively until the base case is reached.
Explanation:
Here is the complete code:
def factorial_str(fact_counter, fact_value): #method to find the factorial
output_string = '' #to store the output (factorial of an input number)
if fact_counter == 0: # base case 1 i.e. 0! = 1
output_string += '1' # displays 1 in the output
elif fact_counter == 1: #base case 2 i.e. 1! = 1
output_string += str(fact_counter) + ' = ' + str(fact_value) #output is 1
else: #recursive case
output_string += str(fact_counter) + ' * ' #adds 8 between each value of fact_counter
next_counter = fact_counter - 1 #decrement value of fact_counter by 1
next_value = next_counter * fact_value #multiplies each value of fact_value by next_counter value to compute the factorial
output_string += factorial_str(next_counter,next_value) #recursive call to factorial_str to compute the factorial of a number
return output_string #returns factorial
user_val = int(input()) #takes input number from user
print('{}! = '.format(user_val),end="") #prints factorial in specified format
print(factorial_str(user_val,user_val)) #calls method by passing user_val to compute the factorial of user_val
I will explain the program logic with the help of an example:
Lets say user_val = 5
This is passed to the method factorial_str()
factorial_str(fact_counter, fact_value) becomes:
factorial_str(5, 5):
factorial_str() method has two base conditions which do not hold because the fact_counter is 5 here which is neither 1 nor 0 so the program control moves to the recursive part.
output_string += str(fact_counter) + ' * ' adds an asterisk after the value of fact_counter i.e. 5 as:
5 *
next_counter = fact_counter - 1 statement decrements the value of fact_counter by 1 and stores that value in next_counter. So
next_counter = 5 - 1
next_counter = 4
next_value = next_counter * fact_value multiplies the value of next_counter by fact_value and stores result in next_value. So
next_value = 4 * 5
next_value = 20
output_string += factorial_str(next_counter,next_value) this statement calls the factorial_str() to perform the above steps again until the base condition is reached. This statement becomes:
output_string = output_string + factorial_str(next_counter,next_value)
output_string = 5 * 4 = 20
output_string = 20
Now factorial_str(next_counter,next_value) becomes:
factorial_str(4,20)
output_string += str(fact_counter) + ' * ' becomes
5 * 4 * 3
next_counter = fact_counter - 1 becomes:
4 - 1 = 3
next_counter = 3
next_value = next_counter * fact_value becomes:
3 * 20 = 60
next_value = 60
output_string = 5 * 4 * 3= 60
output_string = 60
factorial_str(next_counter,next_value) becomes:
factorial_str(3,60)
output_string += str(fact_counter) + ' * ' becomes
5 * 4 * 3 * 2
next_counter = fact_counter - 1 becomes:
3 - 1 = 2
next_counter = 2
next_value = next_counter * fact_value becomes:
2 * 60 = 120
next_value = 120
output_string += factorial_str(next_counter,next_value) becomes:
output_string = 120 + factorial_str(next_counter,next_value)
output_string = 5 * 4 * 3 * 2 = 120
factorial_str(2,120)
output_string += str(fact_counter) + ' * ' becomes
5 * 4 * 3 * 2 * 1
next_counter = fact_counter - 1 becomes:
2 - 1 = 1
next_counter = 1
next_value = next_counter * fact_value becomes:
1 * 120 = 120
next_value = 120
output_string += factorial_str(next_counter,next_value) becomes:
output_string = 120 + factorial_str(next_counter,next_value)
factorial_str(next_counter,next_value) becomes:
factorial_str(1, 120)
Now the base case 2 evaluates to true because next_counter is 1
elif fact_counter == 1
So the elif part executes which has the following statement:
output_string += str(fact_counter) + ' = ' + str(fact_value)
output_string = 5 * 4 * 3 * 2 * 1 = 120
So the output of the above program with user_val = 5 is:
5! = 5 * 4 * 3 * 2 * 1 = 120
Following are the recursive program code to calculate the factorial:
Program Explanation:
Defining a method "factorial_str" that takes two variable "f, val" in parameters.Inside the method, "s" variable as a string is defined, and use multiple conditional statements.In the if block, it checks f equal to 0, that prints value that is 1.In the elif block, it checks f equal to 1, that prints the value is 1.In the else block, it calculates the factor value and call the method recursively, and return its value.Outside the method "n" variable is declared that inputs the value by user-end, and pass the value into the method and print its value.Program:
def factorial_str(f, val):#defining a function factorial_str that takes two parameters
s = ''#defining a string variable
if f == 0:#defining if block that check f equal to 0
s += '1'#adding value in string variable
elif f == 1:#defining elif block that check f equal to 1
s += str(f) + ' = ' + str(val)#printing calculated factorial value
else:#defining else block that calculates other number factorial
s += str(f) + ' * '#defining s block that factorial
n = f - 1#defining n variable that removes 1
x = n * val#defining x variable that calculate factors
s += factorial_str(n,x)#defining s variable that calls factorial_str method recursively
return s#using return keyword that returns calculated factors value
n = int(input())#defining n variable that inputs value
print('{}! = '.format(n),end="")#using print method that prints value
print(factorial_str(n,n))#calling method factorial_str that prints value
Output:
Please find the attached file.
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Which item converts a high level language program to low level machine instruction?
the content of a text is its
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True or False) Embedded computers are standalone products that have many functions.
Embedded computers are standalone products that have many functions. The statement is false.
What is Embedded computers ?An embedded computer is a type of computer that involves as part of a larger system, this computer performs a highly specific function like industrial automation and in-vehicle computing, signage, robotics etc.
These computer platforms are used for a purpose-built for a single, software-controlled projects, used in a device which perform that one singular function that they are programmed for.
The major differences between embedded computers and a regular computer are it can find at the office lie in their purpose and design.
Embedded computers have the components arranged in a single motherboard, with no room for expansion or upgradation is needed. They also come in a smaller size most of the time as compared to regular PCs.
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