The program Nadha Skolar wrote is supposed to read an integer value supplied by the user that should be between 1-30. Using the value supplied (let's call it n), three different summation formulas should be calculated using three different methods. Nadha Skolar was supposed to write a program to read the user's input, ensure that it is a value between 1-30 and then call the appropriate methods to calculate the summations and print the results:

• summationN() - Calculates and returns the summation of the first n integers. This should be calculated using n(n+1)/2
• sumofOddN() - Calculates and returns the summation of the first n odd integers. This should be calculated using n²
• sumOfSquaresN() - Calculates and returns the sum of squares of the first n integers ∑i² from 1 to n. This should be calculated using n(n+1)(2n+1)/6

Sample Runs:

Run #1 (bad value for n):

Enter a number between 1-30 for the value of n: 0 <--- user enters the number for n
Program cannot continue. n must be a value 1-30.  <--- use a println

Run #2 (bad value for n):

Enter a number between 1-30 for the value of n: 31  <--- user enters the number for n
Program cannot continue. n must be a value 1-30. <--- use a println

Run #3:

Enter a number between 1-30 for the value of n: 3  <--- user enters the value for n

The summation of the first n numbers is: 6
The summation of the n odd numbers is: 9
The summation of n numbers squared is: 14 <--- use a println

Tips:

1. Test your program in intelliJ before copying it back to zyBooks.
2. When the program is working correctly, copy the code from intelliJ back to zyBooks and submit for grading.
3. Important: You may NOT erase and re-write the entire program or an entire method. Your job is to fix Nadha's thinking and programming.

import java.util.*;

/* Name: NadhaSkolar Solution

public class NadhaStrikesAgain { //my best work yet! I have just learned about methods!
public static void main(String[] args) {

//get the value for n
Scanner scnr = new Scanner(System.in);
int n = getN();

//ensure n is usable
if ((n <= 0) && (n > 30)){
System.out.println("Program cannot continue. n must be a value 1-30.");
}

int sum = summationN(n);
int sumodd = sumofOddN(sum);
int sumSquares = sumOfSquaresN(n);

displayResults(sumodd, sum, sumSquares); //print them out
}
}

// ************************************************
// DESCRIPTION - getN() - prompts for n and returns value to main
// ************************************************
public static void getN(Scanner scnr) {
//prompt for a number,
System.out.print("Enter a number between 1-30 for the value of n: ");
int n = scnr.nextInt();
return n;
}

// ************************************************
// DESCRIPTION - addOdd() computes summation of first "num" odd numbers using the formula n^2
// ************************************************
public static double sumofOddN(int num) {
return(num^2);
}

// ************************************************
// DESCRIPTION - summation() - computes and returns the summation of i from to N
// ************************************************
public static int summationN(int num) {
return(num * num + 1 / 2);
}

// ************************************************
// DESCRIPTION - sumOfSquares() - computes and returns the sum of squares of first "num" numbers
// ************************************************
public static int sumOfSquaresN(int n) {
return((num * (num + 1) * (2 * num + 1) / 6));
}

// ************************************************
// DESCRIPTION - displayResults() - displays the various summations
// ************************************************
public static void displayResults(int sum, int oddSum, int sumSquares) {
System.out.println();
System.out.println("The summation of the first n numbers is: " + sum);
System.out.println("The summation of the n odd numbers is: " + oddSum);
System.out.println("The summation of n numbers squared is: " + sumSquares);
}
}
}

Instructions

Write a Circle class (Circle.java) that has the following fields:

- radius (double)

- PI (final double initialized to 3.1415) // no need to have setters or getters for this

Include the following methods:

- Constructor (accepts radius of circle as an argument)

- Constructor (no argument that sets radius to 0.0)

- setRadius (set method for radius field)

- getRadius (get method for radius field)

- calcArea (calculates and returns area of circle: area = PI * radius * radius)

- calcDiameter (calculates and returns diameter of circle: diameter = radius * 2)

- calcCircumference (calculates and returns circumference of circle: circumference = 2* PI * radius)

Write a test program (TestCircle.java) that will ask user for the radius, creates the circle object, and then displays the area, diameter, and circumference.

Make sure to create 2 circle object instances - one with the radius as an argument, one without but sets the radius with the setRadius() method.

Thank you so much for your help!!

Create 2 more batch files called devTracker.bat and showTracker.bat as follows:
devTracker.bat
a. This batch logs an entry into a log file called C:\myTemp\devTracker.log
b. The entry in the log file should indicate the date and time of the VS launch as well as a message indicating
that you started Visual Studio. Please log all of this information on 1 line in the devTracker.log file
c. After making this log entry, devTracker.bat should run myStart.bat for you
showTracker.bat
d. Create another batch file called showTracker.bat that displays the contents of the devTracker.log
file in the command prompt window.

As it relates to C#:

Though the function of switch case and else if ladder is same, there are a number of  difference between switch case and else if ladder, Explain the differences in two areas such (memory consumption, speed of processing, variable requirement) etc.

Please code in c# (C-Sharp)

Write a program that will ask the user for their name. If the user does not input anything, display a

warning before continuing. The program will then ask the user whether they want to have an addition,

subtraction, multiplication, or division problem. Once the user indicates their choice, the program will

display 2 randomly generated numbers from 1 to 9 in a math problem matching the user’s choice.

Example: user selects addition, the equation presented is:

(random number from 1 to 9) + (random number from 1 to 9)

The user will then input an answer as a whole number. If the answer they entered is not a whole

number, tell the user their input is invalid and end the program. If the input is valid, check to see if it is

the correct answer. If correct, congratulate the user by name. If incorrect, output the correct answer.

Tasks

1) The program needs to contain the following

a.

A comment header containing your name and a brief description of the program

b. At least 5 comments besides the comment header explaining what your code does

c.

A string variable that captures the user’s name

d. A way to validate user input to determine if they entered an empty string

i. Warn the user if they enter an empty string

ii. Continue the program after warning the user

e. A prompt for what type of quiz the user wants

f.

Display of a quiz matching the type the user requested

g.

A prompt for an answer in the form of a whole number

i. A message if the user enters an invalid number

1. Do not check the user’s answer if their input is invalid

ii. If input is valid:

1. Check the answer

2. If the answer is correct, congratulate the user by name

3. If incorrect, output the correct answer

h. “Press enter to continue” and Console.ReadLine(); at the end of your code

i. Note: if you write a try-catch statement, these lines will be after your last catch

2) Upload a completed .cs file onto the Assignment 4 submission folder and a word document

containing the following six (6) screenshots:

a.

The warning displayed when the user enters a blank value for the name

b. One test run for each equation with valid input

i. Answer 2 quizzes correctly

ii. Answer 2 quizzes incorrectly

c.

One test run with invalid input

Write C functions to do each of the following. Make sure your function has exactly the same name, parameters, and return type as specified here. Please place all of the functions in a single .c file and write a main() to test them.

1. int process(const char *input_filename, const char *output_filename) — reads the file named input_filename and processes it, putting results in output_filename. The input file consists of lines of the form "number operation number," for example:

   15 - 4
   3.38 / 2.288
   2 ^ -5
   35.2 + 38

   The possible operations are +, -, *, /, and ^ (power). Your function should calculate the value of each line's expression and save it (one to a line) to the output file. For example, the input file shown above would result in an output file of

   11.000000
   1.477273
   0.031250
   73.200000

   The return value of the function should be the number of calculations that it did (4 for this example file).

   (Hints: fscanf() returns the constant value EOF when the end of file is reached. The pow(x, y) function defined in <math.h> calculates x^y; you will need to add -lm to the command line when compiling your code to link the math library.)

In C++

You will create 3 files: The .h (specification file), .cpp (implementation file) and main file. You will practice writing class constants, using data files. You will add methods public and private to your BankAccount class, as well as helper methods in your main class. You will create an arrayy of objects and practice passing objects to and return objects from functions. String functions practice has also been included. You have been given a template in Zylabs to help you with this work. The data file is also uploaded.

1. Extend the BankAccount class. The member fields of the class are: Account Name, Account Id, Account Number and Account Balance. The field Account Id (is like a private social security number of type int) Convert the variables MIN_BALANCE=9.99, REWARDS_AMOUNT=1000.00, REWARDS_RATE=0.04 to static class constants Here is the UML for the class:

2. Create a file called BankAccount.cpp which implements the BankAccount class as given in the UML diagram above. The class will have member variables( attributes/data) and instance methods(behaviours/functions that initialize, access and process data)
3. Create a driver class to do the following:
   1. Read data from the given file BankData.data and create and array of BankAccount Objects

The order in the file is first name, last name, id, account number, balance. Note that account name consists of both first and last name

2. Print the array (without secret id) similar to Homeowork2 EXCEPT the account balance must show only 2 decimal digits. You will need to do some string processing.
3. Find the account with largest balance and print it
4. Find the account with the smallest balance and print it.
5. Determine if there are duplicate accounts in the array. If there are then set the duplicate account name to XXXX XXXX and rest of the fields to 0. Note it’s hard to “delete” elements from an array. Or add new accounts if there is no room in the array. If duplicate(s) are found, print the array.

Create BankAccount.h.

This is given for BankAccount.cpp:

#include <string>
#include <iostream>
#include "BankAccount.h"

// BankAccount::BankAccount();

BankAccount::BankAccount(std::string accountName, int id, int accountNumber, double accountBalance){
//

}
//getters
  
std::string BankAccount::getAccountName(){
//
}
int BankAccount::getAccountNumber(){
//
}
double BankAccount::getAccountBalance(){
//
}
  
void BankAccount::setAccountBalance(double accountBalance){
//
}
std::string fixPoint(std::string number){
//adjust the two decimal places
}
std::string BankAccount::toString(){

}

bool BankAccount::withdraw(double amount){

//
}
  
void BankAccount::deposit(double amount){
//
}

This is given for main.cpp:

#include <iostream>
#include <fstream>
#include <string>
#include //your header file

using namespace std;
const int SIZE = 8;
void fillArray (ifstream &input,BankAccount accountsArray[]);
int largest(BankAccount accountsArray[]);
int smallest(BankAccount accountsArray[]);
void printArray(BankAccount accountsArray[]);
int main() {

//open file
//fill accounts array
//print array
//find largest
//find smallest
//find duplicates and print if necessary
BankAccount accountsArray[SIZE];
  
fillArray(input,accountsArray);
printArray(accountsArray);
cout<<"Largest Balance: "<<endl;
cout<<accountsArray[largest(accountsArray)].toString()<<endl;
cout<<"Smallest Balance :"<<endl;
cout<<accountsArray[smallest(accountsArray)].toString()<<endl;
}
}
void fillArray (ifstream &input,BankAccount accountsArray[]){

}

int largest(BankAccount accountsArray[]){
//returns index of largest account balance
}
int smallest(BankAccount accountsArray[]){
//returns index of smallest

}
BankAccount removeDuplicate(BankAccount account1, BankAccount account2){

return (account1.equals(account2));

}
void printArray(BankAccount accountsArray[]){
cout<<" FAVORITE BANK - CUSTOMER DETAILS "<<endl;
cout<<" --------------------------------"<<endl;
//print array using to string method

}

file "BankData.dat" contains:

Matilda Patel 453456 1232 -4.00
Fernando Diaz 323468 1234 250.0
Vai vu 432657 1240 987.56
Howard Chen 234129 1236 194.56
Vai vu 432657 1240 -888987.56
Sugata Misra 987654 1238 10004.8
Fernando Diaz 323468 1234 8474.0
Lily Zhaou 786534 1242 001.98

Debug the following program.Each line that has a number and line at the end of it has an error. The error can be syntax or logic. Correct the error. Rewrite the correct answer in place of the original code :

private void btnCalculate_Click (object sender, System.EventArgs e)

{

intLimit = zero; //

intCounter == 1; // counter need to begin at 1

lstResults.Items.Empty(); // clear ListBox

intLimit = Int32.Parse( txtInput); // retrieve user input from GUI

lstResults.Items.Add( "N/tN^2/tN^3" ); // add header with tabs

calculate and display square and cube of 1 to intLimit

while ( intCounter <= intLimit ) ;

lstbx.Items.Add( intCount = "\t" + Math.Pow( intCount, 2 );

Math.Pow( intCount 3^ );                   

intCount++;                                                        // increment counter

}

Convert 0xCD001234 from IEEE-754 hexadecimal to single-precision floating point format.
Please show every single detail for upvote.
Please do not answer otherwise.

a style sheet was not new with HTML and even today other languages use a similar approach. JavaFX uses an almost identical style definition as CSS for its style sheets. .NET's Windows Presentation Foundation (WPF) uses an XML like style definition in a language named XAMLAll these different technologies have one thing in common: they separate what is being displayed from how it is being displayed. Why? What is the benefit of doing so, if any? What are the drawbacks, if any? For those of you who may have taken a software architecture/engineering class, the style sheet follows a, currently, very popular architecture, do you know what it is?

120 WORDS MINIMUM

Scenario
Create an algorithm to solve the maximum subarray problem. Find the non-empty, contiguous subarray of the input array whose values have the largest sum. You can see an example array with the maximum subarray indicated in the following diagram:

Screen Shot 2019-01-07 at 10.58.06 AM.png
The O(n2) brute force algorithm that tests all combinations for the start and end indices of the subarray is trivial to implement. Try to solve this using the divide and conquer algorithm.

Aim
To design and implement an algorithm to solve the maximum subarray problem with a better runtime than the O(n2) brute force algorithm, using a divide and conquer approach.

Prerequisites
You need to implement the maxSubarray() method of the MaximumSubarray class in the source code, which returns the sum of values for the maximum subarray of the input array. Assume that the sum always fits in an int, and that the size of the input array is at most 100,000.

public class MaximumSubarray {
public Integer maxSubarray(int[] a) {
return null;
}
}
The divide and conquer approach suggests that we divide the subarray into two subarrays of as equal size as possible. After doing so, we know that a maximum subarray must lie in exactly one of following three places:

Entirely in the left subarray
Entirely in the right subarray
Crossing the midpoint
Steps for Completion
The maximum subarray of the arrays on the left and right is given recursively, since those subproblems are smaller instances of the original problem.
Find a maximum subarray that crosses the midpoint.

C#

What to submit:

One zip file named Ass3.zip

This zip must contain one VS 2017 solution named Ass3, which contains one C# Windows Forms App project also named Ass3 and the project contains a default form, Form1.cs and Program.cs.

No change should be made in Program.cs, but your Form1 must be designed and implemented to satisfy the following requirements.

**Do not submit only a single file of the solution or project. The whole solution folder of VS 2017 must be zipped and submitted for grading.

Requirements:

1. Use VS 2017 to create a C# Windows Forms App project whose solution and project are named Ass3. When all requirements below are finished and tested, zip the entire solution as Ass3.zip and upload it for grading.
2. Use the same Functional Requirement as described in Assignment 2 with the changes below.
3. Except the Form1 class given by Visual Studio, no other classes need to be defined. That is, the program you did in Assignment 2, including data and methods of the two classes should be "transplanted" in the Form1 class of this Ass3 project.
4. All input and output should be done within Form1 and visual controls (e.g., textboxes, labels, buttons, etc.) on the form. That is, no console is used--no more command line I/O and no display in the Command Prompt.
5. Specifically, the two initial integers and each guess should be entered in a corresponding textbox (i.e., three textboxes in total) and the error message "You must enter a number between ... and ...!" will be displayed by a label in red. A second label should be used to display in blue the hint "Higher...", "Lower...", and "You win!". Finally, let the ending message "----End of Game----" be displayed in the form title (in black since title color cannot be changed).
6. Set the font size of all visual controls to be 18 points.
7. Add a button showing 'Generate Secrete Number' to create a secrete number every time it is clicked. Because this button can be clicked at any time, there might be an error or hint displayed from the previous play, this button should also erase both labels to empty and reset the form title to 'Form1' when clicked.
8. To accept a guess, a second button showing 'Guess' should be added on the form. Each time when it is clicked, it first erases the labels from their previous display and then show the error and/or hint message, depending on the guess entered.
9. Place each visual control in Form1 so they look like the form shown in the demo program attached below.
10. Same as in Assignment 2, we assume there are always two valid input integers entered to define the range of the random secrete number, and an integer is always entered as the guess value. That means there is no need to validate all three input integers except the guess value could still be out of the range, which explains (in item 5 above) why an error message needs to be displayed.

Discuss how a malware can maintain persistence. What do malwares use the SetWindowsHookEx function for?

Do not use awk.

Using the fixed length field file called famous.dat, make a one-line Unix command - using pipe(s) - to display an alphabetical list of the last and first names in upper case of the last 8 people in the file. Hint: Names are in columns 6 through 35. Output is this..

DARWIN         CHARLES      
EINSTEIN       ALBERT       
GALILEO        GALILELI     
GOLDMAN        EMMA         
LOVELACE       ADA          
MANDELA        NELSON       
PARKS          ROSA         
RUSSELL        BERTRAND

Hint:  famous.dat uses space(s) to separate the fields