2 Write a Java program called Pattern that prints an 8-by-8 checker box pattern using an if loop.

Write a Java program called Decision that includes a while loop to prompt the user to enter 5 marks using the JOptionPane statement and a System. Out statement to output a message inside the loop highlighting a pass mark >= 50 and <= 100. Any other mark will output a messaging stating it’s a fail.

PLEASE USE PYTHON CODE

7. determine the two roots of sinx+3cosx-2 =0 that lie in the interval (-2,2). use the Newton- Raphson method and solve by the secant formula

Translate the following C program to Pep/9 assembly language:

#include <stdio.h>

char toLower(char ch)
{
if (ch >= 'A' && ch <= 'Z' )
       ch += 'a' - 'A';
return ch;
}

int main()
{
char ch, conversion;
printf("Enter an uppercase letter: ");
scanf("%c", &ch);
conversion = toLower(ch);
printf("\nLetter after conversion: %c\n\n", conversion);
return 0;
}

4   Write an algorithm to settle the following questions:

Accept a starting balance (For example :A bank account starts out with $10,000) Accept an Interest rate (For example: 6 percent per year is 0.005 percent per month).

Accept an amount to withdraw every month (For example: Every month, $500 is withdrawn to meet college expenses.)

After how many years is the account depleted? (You are to loop and find out how many months this will take) (For example: Suppose the values ($10,000, 6 percent, $500) were user selectable, then how many months would it take to deplete the account?)

Are there values for which the algorithm you developed would not terminate? (For example if the interest calculated for each month exceeds the withdrawal every month). If so, change the algorithm to make sure it always terminates.

Don't write the program, just write it in pseudo English.

Software Testing Question

Program P2 CFG.

a) Identify the basic blocks for the following program P2 written in pseudo-code.

b) Draw the control flow graph.

Program P2

1) integer A, B;

2) input (A);

3) B = 1;

4) while (int i=1; i<=A; i++)

5) {

6) B = B * i;

7) if (B>13)

8) B = B / 2;

9) else 1

0) B = B * 2;

11) }

12) output (A,B);

13) end;

String Input Console Application and Program Analysis

Demonstrate an understanding of basic C++ programming concepts by completing the following:

• Program: Create a simple C++ console application that will write a program that will take string input from a user. Your program should reverse the string and then print the output to the screen. Take input from the user 3 times for varying string lengths.
• Program Analysis: Given your program implementation, discuss and identify the possible vulnerabilities that may exist. If present, discuss solutions to minimize the vulnerabilities. Then discuss and identify possible problems that can result in errors for string manipulation of data. Your program analysis should be 1-2 pages in length.

Please, write code in c++. Using iostream and cstring library

Use pointers!

You given a text.Your task is to write a function that will find the longest sequence of digits inside.
Note that the output have to be presened just like in sample.

Note. The program have to use pointer.

Input:
First line contains one line that is not longer than 1000.

Output:
The longest sequence of numbers.All numbers are positive and integers.

Samples:

IP address:  158.234.28.72
Subnet Mask: 255.248.0.0

Find Network Address and Broadcast address. Provide all necessary steps.

Write a C program that runs on ocelot for a mini calculator using only the command line options. You must use getopt to parse the command line.
Usage: minicalc [-a num] [-d num] [-m num] [-s num] [-e] value
• The variable value is the starting value.
• Value should be validated to be an integer between 1 and 99. Error message and usage shown if not.
• -a adds num to value.
• -d divides value by num.
• -m multiplies value by num.
• -s subtracts num from value.
• -e squares value. (Note: no num is needed.)
• Output should have exactly 2 decimal places no matter what the starting values are.
• If –e is included, it is executed first.
• Use standard order of operations for all operations.
Code should be nicely indented and commented. Create a simple Makefile to compile your program into an executable called minicalc.The Makefile should be called Makefile with no extension. I should be able to type make at the command line to compile your program.

Working with Files in C++.

Create the following  program called payroll.cpp.  Note that the file you read must be created before you run this program.  The output file will be created automatically by the program.  You can save the input file in the same directory as your payroll.cpp file by using Add New Item, Text File.  

// File:  Payroll.cpp

// Purpose:  Read data from a file and write out a payroll

// Programmer:  (your name and section)

#include <cstdlib> // for the definition of EXIT_FAILURE

#include <fstream> // required for external file streams

#include <iostream> // required for cin cout

using namespace std;

int main ()

{

ifstream ins; // associates ins as an input stream

 ofstream outs; // associates outs as an output stream

 int id; // id for employee

 double hours, rate; // hours and rate worked

 double pay; // pay calculated

 double total_pay; // grand total of pay

 // Open input and output file, exit on any error

 ins.open ("em_in.txt"); // ins connects to file "em_in.txt"

 if (ins.fail ())

 {

   cout << "*** ERROR: Cannot open input file. " << endl;

   getchar(); //  hold the screen

   return EXIT_FAILURE;

 } // end if

 outs.open ("em_out.txt"); // outs connects to file "em_out.txt"

 if (outs.fail ())

 {

   cout << "*** ERROR: Cannot open output file." << endl;

   getchar();

   return EXIT_FAILURE;

 } // end if

// Set total_pay to 0

total_pay = 0;

ins >> id; // get first id from file

// Do the payroll while the id number is not the sentinel value

while (id != 0)

 {

   ins >> hours >> rate;

   pay = hours * rate;

   total_pay += pay;

   outs << "For  employee " << id << endl;

   outs << "The pay is " << pay << " for " << hours

<< " hours worked at " << rate << " rate of pay" << endl << endl;

   ins >> id;

 } // end while

 // Display a message on the screen

   cout << "Employee processing finished" << endl;

   cout << "Grand total paid out is " << total_pay << endl;

   ins.close(); // close input file stream

   outs.close(); // close output file stream

   return 0;

 }

Create the input file:

Inside C++ go to  File Add New Item and then Text to create a text file.  

Type in the data below

In the same directory as your .cpp file for Payroll.cpp click Files and Save As em_in.txt

1234

35  10.5

3456

40 20.5

0

solution should show :

-the output file  

-the input file

-the screen output

-the source program

For this problem, complete the function stub to simulate the following random variable: Suppose we have a (possibly) unfair coin where the probability of Head is ? and we flip this coin ? times. Let X = "the number of heads showing."

Demonstrate your solution by generating 10⁵ random variates for the parameters shown and displaying them using show_distribution(...).

STARTER CODE:

# First, create a function which simulates the coin, where
# you return 1 with probability p and 0 with probability 1-p.

N = 10
p = 0.25

num_trials = 10**5

def coinFlip(p):
return 0 # Just to get it to compile
  
def coinFlips(N,p):
return 0 # Just to get it to compile

print("Demonstration:")

seed(0)

-----xxxxx-------Could you please use java language. thank you. :::::: XXXX:::::::::::

Implement a recursive reverse sorting algorithm. The following requirements should meet:

a The program shall graphically prompt the user for a file.

bThe program shall read the selected file which will contain 1 integer per line.

c. The program shall sort the values it reads from the file from largest to smallest.

d.The program shall write the values to an output file from largest to smallest in the same directory as the input file.

eThe program shall write 1 integer per line in the output file.

f.The program shall use a recursive algorithm to sort the values

​This assignment should be based on:

i) Functionality - Does the program meet the requirements?

ii) Style - Do you have comments and well-written code?

iii) Design - Were good design principles used in the construction of the program?

iv) Additional Elements - Error handling, unit tests, input checking, etc.

Requirements:   You are to write a class called Point – this will represent a geometric point in a Cartesian plane (but x and y should be ints).   Point should have the following:

Data:  

• that hold the x-value and the y-value. They should be ints and must be private.

Constructors:

• A default constructor that will set the values to (2,-7)

• A parameterized constructor that will receive 2 ints (x then y) and set the data to what is received.

• A copy constructor that will receive a Point. If it receives null, then it should

throw new IllegalArgumentException(<”your meaningful String here”>);

If it is OK, the it should initialize the data (of the new instance being created) to be the same as the Point that was received.

Methods:

• The methods to be implemented are shown in the PointInterface.java. You can look at this file to see the requirements for the methods.

• Your Point class should be defined like this:

public class Point implements PointInterface

When your Point.java compiles, Java will expect all methods in the interface to be implemented and will give a compiler error if they are missing. The compiler error will read “class Point is not abstract and does not implement method ”.

You can actually copy the PointInterface methods definitions into your Point class so it will have the comments and the method headers.   If you do this, be sure to take out the ; in the method headers or you will get a “missing method body” syntax error when compiling…

• But a toString() method and a .equals(Object obj) method are automatically inherited from the Object class. So if you do not implement them, Java will find and use the inherited ones – and will not give a compiler error (but the inherited ones will give the wrong results). The Point class should have its own .toString and .equals methods.
• ==============================================================================
• This is the interface (called PointInterface.Java) for a Point class (which will represent a 2-dimensional Point)

• public interface PointInterface

  {

  // toString

  // returns a String representing this instance in the form (x,y)

  (WITHOUT a space after the ,)

  public String toString();

  // distanceTo

  // throws a new IllegalArgumentException(

  if null is received

  // returns the distance from this Point to the Point that was

  received

  // NOTE: there is a static method in the Math class called hypot

  can be useful for this method

  public double distanceTo(Point otherPoint);

  //equals - returns true if it is equal to what is received (as an Object)

  public boolean equals(Object obj);

  // inQuadrant

  // returns true if this Point is in the quadrant specified

  // throws a new IllegalArgumentException if the quadrant is

  out of range (not 1-4)

  public boolean inQuadrant(int quadrant);

  // translate

  // changes this Point's x and y value by the what is received (thus

  "translating" it)

  // returns nothing

  public void translate(int xMove, int yMove);

  // onXAxis

  // returns true if this Point is on the x-axis

  public boolean onXAxis();

  // onYAxis

  // returns true if this Point is to the on the y-axis

  public boolean onYAxis();

  //=============================================

  // The method definitions below are commented out and

  // do NOT have to be implemented

  // //===========================================

  // halfwayTo

  // throws a new IllegalArgumentException(

  if null is received

  // returns a new Point which is halfway to the Point that is

  received

  //public Point halfwayTo(Point another);

  // slopeTo

  // throws a new IllegalArgumentException(

  if null is received

  // returns the slope between this Point and the one that is

  received.

  // since the slope is (changeInY/changeInX), then first check to see if

  changeInX is 0

  // if so, then return Double.POSITIVE_INFINITY; (since the

  denominator is 0)

  //public double slopeTo(Point anotherPoint)

  }

Q1: Constraint:
Use concept of dynamic allocation for implementation

Statement:
In a class there are N students. All of them have appeared for the test. The teacher evaluated
the test and noted marks according to their roll numbers. Marks of each students has to be incremented
by 5. Print list of marks of students before and after increment.