4. (15 points) Give an algorithm that takes as input a positive integer n and a number x, and computes xn (i.e., x raised to the power n) by performing O(lgn) multiplications. Your algorithm CANNOT use the exponentiation operation, and may use only the basic arithmetic operations (addition, subtraction, multiplication, division, modulo). Moreover, the total number of basic arithmetic operations used should be O(lgn).
Answer:
The algorithm is as follows:
Exponent(x, n):
if(n == 0):
return 1
pr = Exponent(x, int(n / 2))
if (n % 2 == 0):
Return pr* pr
else:
if(n > 0):
Return x * pr* pr
else:
Return (pr* pr) / x
Explanation:
In order to get a O(log n) time complexity, a recursive procedure is implemented by the algorithm
The algorithm begins here
Exponent(x, n):
If n is 0, the procedure returns 1
if(n == 0):
return 1
This recursively calculates the product of x, n/2 times
pr= Exponent(x, int(n / 2))
If n is even, the square of prod (above) is calculated
if (n % 2 == 0):
Return pr* pr
If otherwise (i.e. odd)
else:
If n is above 0, the square of prod multiplied by x is calculated
if(n > 0):
Return x * pr* pr
If otherwise, the square of prod divide by x is calculated
else:
Return ([tex]pr* pr[/tex]) / x
The time complexity is: O(log|n|)
Question 2
An example of something that operates at the application layer is:
Answer:
HTTP, FTP, SMTP- These are protocols at the application layer
Explanation:
you will need to back up your computer files.
Does the security burden fall primarily on the user? On
the company that the user is doing business with? On
both? Support your answer.
Answer:
yes and no because of the security
Explanation:
yes and no because of the security
draw a flowchart to accept two numbers and check if the first number is divisible by the second number
Answer:
I've attached the picture below, hope that helps...
Which option is considered hardware and is designed by computer
engineers?
O A. The operating system that runs a computer
OB. A computer's processors and circuit boards
OC. Networks that connect computers
D. Game and web applications
Hardware includes components like circuit boards and CPUs, which are created by computer experts.
Hardware definition and examples.Computer: Any component of the computer that we can touch is referred to as hardware. These are the main electronic components that go into making a computer. The Processor, Memory Devices, Monitor, Printer, Keyboard, Mouse, and Central Processing Unit are a few examples of hardware in a computer.
How do software and hardware differ?Any physical component of a computer is referred to as hardware. This includes hardware like monitors and keyboards as well as components found within gadgets like hard drives and microchips. Software, which includes computer programs and mobile apps, is anything that instructs hardware on what to do and how to accomplish it.
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Create a program for the given problems using one-dimensional array. Program to identify the highest value in the given numbers.
Answer:
Explanation:
Here's one way you could write a C program to identify the highest value in a given set of numbers using a one-dimensional array:
Copy code
#include <stdio.h>
int main() {
int nums[10]; // Declare an array of 10 integers
int i, max;
printf("Enter 10 numbers: ");
for (i = 0; i < 10; i++) {
scanf("%d", &nums[i]); // Read in the numbers
}
max = nums[0]; // Initialize max to the first number in the array
for (i = 1; i < 10; i++) {
if (nums[i] > max) { // Compare each number to the current max
max = nums[i]; // If a number is larger, update the max
}
}
printf("The highest value is: %d", max);
return 0;
}
Anyone seen by the camera, whether or not they have a speaking part or any
other significant role in the program, is considered the?
Answer:
my camera is also acting up too
Data management technology consists of the: Group of answer choices physical hardware and media used by an organization for storing data. detailed, preprogrammed instructions that control and coordinate the computer hardware components in an information system. software governing the organization of data on physical storage media. hardware and software used to transfer data. universally accepted standards for storing data.
Answer:
software governing the organization of data on physical storage media.
Explanation:
Data management platform can be regarded as a foundational system utilized in collection and analyzing of large volumes of data across an organization. Data management encompass some variety of interrelated functions, the basic technology that is been utilized in
deployment and administering databases is regarded as database management system. Database technologies collect, store and also organize information then process it o that a user can easily finds needed details when they need it . It should be noted that Data management technology consists of the software governing the organization of data on physical storage media.
how to download my x games to my pc
Answer:
You can only download x-box games to your pc if your computer is a windows 10 that has both x-box live and Microsoft store. Most x-box games available on the microsoft store requires an x-box live account to download, so you first need to create an account or sign in. Then, after fully syncing your account, you may start downloading games. But keep in mind, if your computer has a w10 hard drive but is a w7 body, some high-quality games might not work.
1. Explain the benefits and drawbacks of using C++ and Visual Studio in a coding project.
2. Explain the benefits and drawbacks of using Java and Eclipse or Python and PyCharm in a coding project.
3. Describe the advantages of being able to code in multiple coding languages and compilers.
Answer:
1. The benefits of using C++ and Visual Studio in a coding project include the availability of a wide range of libraries and tools, the ability to create high-performance applications, and the ability to customize the code as needed. Drawbacks include the complexity of the language and the potential for memory leaks.
2. The benefits of using Java and Eclipse or Python and PyCharm in a coding project include the availability of a large number of libraries and tools, the ability to create high-level applications quickly, and the relative simplicity of the language. Drawbacks include the potential for code to become bloated and the lack of support for certain features.
3. The advantages of being able to code in multiple coding languages and compilers include the ability to use different languages and tools for different tasks, the ability to switch between languages quickly, and the ability to take advantage of the strengths of each language. Additionally, coding in multiple languages can help to increase one's overall coding knowledge and skills.
Explanation:
Code to be written in python:
Correct code will automatically be awarded the brainliest
You had learnt how to create the Pascal Triangle using recursion.
def pascal(row, col):
if col == 1 or col == row:
return 1
else:
return pascal(row - 1, col) + pascal(row - 1, col - 1)
But there is a limitation on the number of recursive calls. The reason is that the running time for recursive Pascal Triangle is exponential. If the input is huge, your computer won't be able to handle. But we know values in previous rows and columns can be cached and reused. Now with the knowledge of Dynamic Programming, write a function faster_pascal(row, col). The function should take in an integer row and an integer col, and return the value in (row, col).
Note: row and col starts from 1.
Test Cases:
faster_pascal(3, 2) 2
faster_pascal(4, 3) 3
faster_pascal(100, 45) 27651812046361280818524266832
faster_pascal(500, 3) 124251
faster_pascal(1, 1) 1
def faster_pascal(row, col):
if (row == 0 or col == 0) or (row < col):
return 0
arr = [[0 for i in range(row+1)] for j in range(col+1)]
arr[0][0] = 1
for i in range(1, row+1):
for j in range(1, col+1):
if i == j or j == 0:
arr[i][j] = 1
else:
arr[i][j] = arr[i-1][j] + arr[i-1][j-1]
return arr[row][col]
which function in Ecels tells how many numeric entries are there
Answer:
CHKNUM
Brainly.......
Can someone write a code that makes circles change colors. Name it update () function.
Using the knowledge in computational language in python it is possible write a code that makes circles change colors.
Writting the code:import PyQt5, sys, time,os
from os import system,name
from PyQt5 import QtCore, QtGui, QtWidgets
from PyQt5.QtCore import QPoint,QTimerEvent,QTimer,Qt
from PyQt5.QtWidgets import QWidget,QApplication,QMainWindow
from PyQt5.QtGui import QPainter
class Stoplight(QMainWindow):
def __init__(self,parent = None):
QWidget.__init__(self,parent)
self.setWindowTitle("Stoplight")
self.setGeometry(500,500,250,510)
def paintEvent(self,event):
radx = 50
rady = 50
center = QPoint(125,125)
p = QPainter()
p.begin(self)
p.setBrush(Qt.white)
p.drawRect(event.rect())
p.end()
p1 = QPainter()
p1.begin(self)
p1.setBrush(Qt.red)
p1.setPen(Qt.black)
p1.drawEllipse(center,radx,rady)
p1.end()
class Stoplight1(Stoplight):
def __init__(self,parent = None):
QWidget.__init__(self,parent)
self.setWindowTitle("Stoplight")
self.setGeometry(500,500,250,510)
def paintEvent(self,event):
radx = 50
rady = 50
center = QPoint(125,125)
p = QPainter()
p.begin(self)
p.setBrush(Qt.white)
p.drawRect(event.rect())
p.end()
p1 = QPainter()
p1.begin(self)
p1.setBrush(Qt.green)
p1.setPen(Qt.black)
p1.drawEllipse(center,radx,rady)
p1.end()
if __name__ == "__main__":
application = QApplication(sys.argv)
stoplight1 = Stoplight()
stoplight2 = Stoplight1()
time.sleep(1)
stoplight1.show()
time.sleep(1)
stoplight2.show()
sys.exit(application.exec_())
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Needing some help with a code, any help would be appreciate for C++
Write a program that has the following functions:
- int* ShiftByOne(int[], int);
This function accepts an int array and the array’s size as arguments. The
function should shift all values by 1. So, the 1st element of the array should
be moved to the 2nd position, 2nd element to the 3rd position, and so on so
forth. Last item should be moved to the 1st position. The function should
modify the input array in place and return a pointer to the input array.
- Int* GetMax(int[], int);
This function accepts an int array and the array’s size as arguments. The
function should return the memory address of the maximum value found in
the array.
- unsigned int GetSize(char[]);
This function accepts a character array (C-String) and should return the size
of the array.
The program that has the following functions is given below:
The Program#include <algorithm>
int* ShiftByOne(int array[], int size) {
int temp = array[size - 1];
for (int i = size - 1; i > 0; i--) {
array[i] = array[i - 1];
}
array[0] = temp;
return array;
}
int* GetMax(int array[], int size) {
int max_val = *std::max_element(array, array + size);
return &max_val;
}
unsigned int GetSize(char str[]) {
unsigned int size = 0;
for (int i = 0; str[i] != '\0'; i++) {
size++;
}
return size;
}
Note: The function ShiftByOne() modifies the input array in place and return a pointer to the input array.
The function GetMax() returns the memory address of the maximum value found in the array.
The function GetSize() returns the size of the array.
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What is output by the following code? c = 1 sum = 0 while (c < 10): c = c + 2 sum = sum + c print (sum)
With the given code, The code outputs 24.
How is this code run?On the first iteration, c is 1 and sum is 0, so c is incremented to 3 and sum is incremented to 3.
On the second iteration, c is 3 and sum is 3, so c is incremented to 5 and sum is incremented to 8.
On the third iteration, c is 5 and sum is 8, so c is incremented to 7 and sum is incremented to 15.
On the fourth iteration, c is 7 and sum is 15, so c is incremented to 9 and sum is incremented to 24.
At this point, c is no longer less than 10, so the while loop exits and the final value of sum is printed, which is 24.
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Try it
Drag and drop each example under the appropriate heading.
taking breaks
reading in a crowded room
having resources nearby
cramming at the last minute
getting plenty of rest
starting your homework late at night
Intro
Good Study Habits
Bad Study Habits
Done
Bad habits include reading in a crowded room, starting your schoolwork late at night, and cramming right before the exam. Good habits include taking breaks, having resources close by, and getting lots of rest.
What are some poor study habits?Being uncoordinated. Being disorganized will simply make studying much more difficult because there are so many things to do and think about. Don't merely jot down notes and post reminders in random locations.
Why do I lose track of what I learn?If a student stays up all night studying for the test, they usually forget the material during it. The ability of the brain to retain information increases with regular study schedules and thoughtful revision, and the material is ingrained much more deeply.
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Why a commerce student must learn about SDLC (Software Development Life Cycle) and its phases?
How SDLC could help a commerce graduate in career growth and success?
Answer:
The description of the given question is described throughout the explanation segment below.
Explanation:
A method that delivers the best reliability as well as cheapest possible applications throughout the specified timeframe, is termed SDLC. A business student could perhaps read about such a life cycle and its stages when individuals not only relate to scientific issues and mean effective pressure.
Whenever a successful entrepreneur does an inventory of an enterprise, people are useful. SDLC demonstrates the capacity for decision-making or judgments.Why did Madison recommend a server-based network for SEAT?
A) It provides centralized access to resources.
B) It is simpler to expand.
C) It is easier to operate.
D) It is less expensive.
E) It provides more security.
Create a Metric Conversion application that displays a menu of conversion choices and then prompts the user to choose a conversion. Conversion choices should include inches to centimeters, feet to centimeters, yards to meters, miles to kilometers, and vice versa. The application should include separate methods for doing each of the conversions. Application output should look similar to:
Answer:
The program in C++ is as follows:
#include<iostream>
using namespace std;
void in2cm(){
double inch;
cout<<"Inches: "; cin>>inch;
cout<<"Centimeter: "<<2.54 * inch<<endl;}
void ft2cm(){
double feet;
cout<<"Feet: "; cin>>feet;
cout<<"Centimeter: "<<30.48 * feet<<endl;}
void yd2m(){
double yard;
cout<<"Yard: "; cin>>yard;
cout<<"Meter: "<<0.9144 * yard<<endl;}
void mi2km(){
double miles;
cout<<"Mile: "; cin>>miles;
cout<<"Kilometer: "<<1.60934 * miles<<endl;}
void cm2in(){
double cm;
cout<<"Centimeter: "; cin>>cm;
cout<<"Inches: "<<0.393701 * cm<<endl;}
void cm2ft(){
double cm;
cout<<"Centimeter: "; cin>>cm;
cout<<"Feet: "<<0.0328084 * cm<<endl;}
void m2yd(){
double meter;
cout<<"Meter: "; cin>>meter;
cout<<"Yard: "<<1.09361 * meter<<endl;}
void km2mi(){
double km;
cout<<"Kilometer: "; cin>>km;
cout<<"Miles: "<<0.621371 * km<<endl;}
int main(){
cout<<"Menu\n1 - inches to centimeter\n2 - feet to centimeter\n3 - yard to meter\n4 - miles to kilometer";
cout<<"\n5 - centimeter to inches\n6 - centimeter to feet\n7 - meter to yard\n8 - kilometer to miles\n0 - Quit"<<endl;
int menu;
cout<<"Select Menu: "; cin>>menu;
while(menu != 0){
if(menu == 1){ in2cm(); }
else if(menu == 2){ ft2cm(); }
else if(menu == 3){ yd2m(); }
else if(menu == 4){ mi2km(); }
else if(menu == 5){ cm2in(); }
else if(menu == 6){ cm2ft(); }
else if(menu == 7){ m2yd(); }
else if(menu == 8){ km2mi(); }
else{cout<<"Invalid Menu"<<endl;}
cout<<"Select Menu: "; cin>>menu;
}
return 0;
}
Explanation:
See attachment for complete code where comments are used as explanation
help asap !!!
which component of cpu controls the overall operation of computer..
Answer:
Control unit.
Explanation:
A scheduling computer system refers to an ability of the computer that typically allows one process to use the central processing unit (CPU) while another process is waiting for input-output (I/O), thus making a complete usage of any lost central processing unit (CPU) cycles in order to prevent redundancy.
Modern central processing units (CPUs) only require a few nanoseconds to execute any instruction when all operands are stored in its registers.
In terms of the scheduling metrics of a central processing unit (CPU), the time at which a job completes or is executed minus the time at which the job arrived in the system is known as turnaround time.
Generally, it is one of the scheduling metrics to select for optimum performance of the central processing unit (CPU).
The component of the central processing unit (CPU) that controls the overall operation of a computer is the control unit. It comprises of circuitry that makes use of electrical signals to direct the operations of all parts of the computer system. Also, it instructs the input and output device (I/O devices) and the arithmetic logic unit how to respond to informations sent to the processor.
Flowchart of Accepts as input the mass, in grams, and density, in grams per cubic centimeters, and outputs the volume of the object using the formula: density 1⁄4 mass / volume.
Below is a simple flowchart that shows the process of calculating the volume of an object using its mass and density:
+-----------------------------+
| Input: Mass (m), |
| Density (d) |
+-----------------------------+
|
|
+-----------------------------+
| Volume = Mass / Density |
+-----------------------------+
|
|
+-----------------------------+
| Output: Volume (v) |
+-----------------------------+
What is the Flowchart about?The flowchart I provided shows the basic process of calculating the volume of an object using its mass and density. The process starts with the input of the object's mass and density. The mass is typically given in grams and the density is given in grams per cubic centimeter.
The next step is to calculate the volume of the object. This is done by using the formula for density, which states that density is equal to mass divided by volume. So, to find the volume, we divide the mass of the object (in grams) by its density (in grams per cubic centimeter). This formula can be written as:
volume = mass / density
Finally, the calculated volume is then output, which is typically given in cubic centimeters.
Note that:
density = mass/volume.
Density = mass / volume
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Write the prototype for a function named showSeatingChart that will accept the following two-dimensional array as an argument.
const int ROWS = 20;
const int COLS = 40;
string seatingChart[ROWS][COLS];
The assignment is due today at 10:00 pm.
Answer:
The prototype is as follows:
void showSeatingChart (string seatingChart[][40]);
Explanation:
Required
The prototype of a function that accepts a 2D array
The syntax to do this (in C++) is as follows:
return-type function-name(array-type array-name[][Column])
The return type is not stated, so I will make use of voidFrom the question, the function name is showSeatingChartThe array type is stringThe array name is seatingChartLastly, the number of column is 40Hence, the function prototype is:
void showSeatingChart (string seatingChart[][40]);
Which cloud model should a company use for an application that has a requirement for a bespoke, specialized hardware configuration?
Answer
A. Saas
B
Private
C
Public
D
Hybrid
Answer:
C
Explanation:
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n
n
n
m
n
n
m
n
A company should use a private or a SaaS based cloud model for an application that a requirement for a bespoke and specialized hardware configuration.
What is a cloud model?A model, which is used for the purpose of bringing convenience of compiling a network of computers together, mostly without the use of external wires, is known as a cloud model.
When an application requires specialized configuration of its computer's hardware, a SaaS or a private cloud models are ideal.
Hence, option A and B holds true regarding a cloud model.
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In 2-3 sentences, describe one way business professionals use a spreadsheet to complete a task.
Answer:
Business And Technology ... one set of data or complete entry in a database ... order to complete a task; this small program is designed to simplify a complicated task ... In 3-5 sentences, describe how technology helps business professionals to be ... that uses an antenna to read and send information by way of a radio signal.
Explanation:
The three most typical general uses of spreadsheet software will be to make graphical representations, store and organize data, and construct expenditures.
What is a spreadsheet?A spreadsheet is indeed a computer program for organizing, calculating, and storing information in a tabular format. Spreadsheets were created as digital counterparts to traditional paper bookkeeping spreadsheets. The information entered into a table's cells is what the program uses to run.
Spreadsheet software is employed by companies to anticipate future progress, compute taxes, finish simple payrolls, create charts, and determine revenues.
1. Business Analysis
2. People Administration
3. Taking care of operations
4. Reporting on Performance
5. Office Management
6. Strategic Evaluation
7. Project Administration
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Each of the parts a. through c. below is preceded by a comment indicating what the code should do. There is a least one problem with each section of code and it fails to do what was intended. Show how to modify or rewrite the code the code so that it does work as intended. If there are multiple problems, correct each one. Assume that all variables used have already been declared.
a. // INTENT: given an array arr of int values // set small equal to the smallest of the array values small = arr[0]; for (int j = 0; j < arr.length-1; j++) if (small
b. // INTENT: compute the average of all n values in the integer array arr; 1/ compute the average as a double and store it in the double variable avg int sum = 0; int n = arr.length; for (int k = arr.length; k <= 0; k--) sum = sum + arr[k]; double avg = sum /n; c. //INTENT: the array b should have the values of array a in reverse order int[] a = {1,2,3,4,5); int[] b = new int[5]; for (int i=0; i<=a.length; i++) b[i-1] = a[a.length-i];
Answer:
The correction is as follows:
(a)
small = arr[0];
for (int j = 0; j < arr.length; j++){
if (small > arr[j]) {
small = arr[j]; } }
(b)
double sum = 0;
int n = arr.length;
for (int k = arr.length-1; k >= 0; k--)
sum = sum + arr[k];
double avg = sum /n;
(c)
int[] a = {1,2,3,4,5};
int[] b = new int[5];
for (int i=0; i<a.length; i++)
b[i] = a[a.length-i-1];
Explanation:
Required
Correct each of the given code
a.
This line is correct; it initializes the smallest to the first element
small = arr[0];
This iterates through the array; however, the last element is left out.
for (int j = 0; j < arr.length-1; j++)
So, the correct code is: for (int j = 0; j < arr.length; j++){
The expected remaining part of the program which compares the elements of the array is missing
I've completed the code [See the answer section]
b.
By syntax this line is correct. However, for the average to be calculated as double; sum has to be declared as double
int sum = 0;
So, the correct code is: double sum = 0;
This line correctly calculates the length of the array
int n = arr.length;
This iteration will create an endless loop
for (int k = arr.length; k <= 0; k--)
So, the correct code is: for (int k = arr.length-1; k >= 0; k--)
This correctly add up the elements of the array
sum = sum + arr[k];
This correctly calculate the average of the array elements
double avg = sum /n;
(c)
The array a is incorrectly initialized because there is no matching end curly brace
int[] a = {1,2,3,4,5);
So, the correct code is: int[] a = {1,2,3,4,5};
This correctly create array b with 5 elements
int[] b = new int[5];
This iterates through a; however, the last element is left out
for (int i=0; i<=a.length; i++)
So, the correct code is: for (int i=0; i<a.length; i++)
This will create an out of bound error
b[i-1] = a[a.length-i];
So, the correct code is: b[i] = a[a.length-i-1];
Which of the following IPv4 addresses is a public IP address?
An example of Pv4 addresses that is a public IP address is
An example of a public IPv4 address is "8.8.8.8". This is a public IP address that is assigned to one of Go ogle's DNS servers. Any device connected to the Internet can use this IP address to resolve domain names and access websites.What is the IP address about?
A public IP address is a globally unique IP address that is assigned to a device or computer that is connected to the Internet. Public IP addresses are used to identify devices on the Internet and are reachable from any device connected to the Internet.
On the other hand, private IP addresses are used within a local area network (LAN) or within a private network, and are not reachable from the Internet.
They are used to identify devices within a local network, such as a home or office network. Private IP addresses are not unique and can be used by multiple devices within a LAN.
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Identifying the Property for Setting Page Breaks
Which property will control page breaks in a report?
the Force New Page property
the Keep Together property
the Page Layout property
the Control Source property
Answer: A) The force new page property
Answer:
A.) The Force New Page property
Explanation:
i hope this helps <3
he assessment you are doing lives in the cloud. The program that grades it and saves your score lives in the cloud. Who might need to apply
atches to this software? Select three options.
The school is responsible for updating computers in its computer lab if you work at school.
It depends on the operating system you are using. Some operating systems do not do updates.
Updates known as patches are made available by both hardware producers and software developers (of both operating systems and applications).
What do patches mean?Operating system (OS) and software patches are updates that address security holes in a program or product. Updates may be released by software developers to fix performance problems and include better security features.
Why are software patches and updates necessary?Updates can improve application functionality and compatibility while mitigating security holes. The continued operation of computers, mobile devices, and tablets depends on software upgrades. They might also lessen security flaws. Data breaches, hacking, and identity theft have all lately hit the news.
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.... is a way to engage people at different locations in synchronous interaction ( fill in the blank space)
Answer:
Video Teleconferencing (VTC).
Explanation:
Communication can be defined as a process which typically involves the transfer of information from one person (sender) to another (recipient), through the use of semiotics, symbols and signs that are mutually understood by both parties.
Video Teleconferencing (VTC) is a way to engage people at different locations in synchronous interaction.