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A: Introduction: Here we are required to explain how should a variable name start with.
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- Please assist with non graded problem. Create a Calculator class that implements sum, subtraction, multiplication, and division operations, and throws an appropriate exception whenever the user attempts to perform a division by zero. Then develop a graphical interface (with JavaFx) for your calculator using TextField, Button, and Label objects, or any other graphical objects you like. Graphically display division by zero errors.Computer Science Write the client code to show how you make use of the LegacyCircle class with your new design.fastfoodStats For this assignment, name your R file fastfoodStats.R For all questions you should load tidyverse, lm.beta and openintro. You should not need to use any other libraries. If the openintro package is not installed, you’ll need to do a one-time installation from the Console Window in RStudio like this:install.packages("openintro") If the lm.beta package is not installed, you’ll need to do a one-time installation from the Console Window in RStudio like this:install.packages("lm.beta") Load libraries with suppressPackageStartupMessages(library(tidyverse))suppressPackageStartupMessages(library(lm.beta)) suppressPackageStartupMessages(library(openintro)) Round all float/dbl values to two decimal places. All statistics should be run with variables in the order I state E.g., “Run a regression predicting mileage from mpg, make, and type” would be: lm(mileage ~ mpg + make + type...) 4. Run a regression predicting calories from saturated fat, fiber, and sugar. Based on…
- First, launch NetBeans and close any previous projects that may be open (at the top menu go to File ==> Close All Projects). Then create a new Java application called "StringSlicer" (without the quotation marks) that uses methods to: Get a String from the user at the command line Populate an ArrayList of Character data (the wrapper class), with each char in the String represented as a separate Character element in the ArrayList Output each Character to the command line, each on a separate line NOTE: For this assignment and all future assignments that deal with methods, you should be calling the appropriate method to do the task indicated, rather than implementing the task logic in the main method itself.Add a validation function using Javascript that does the following 2 things: validates that password entered by the user and reentered password match. Note that minlength ensures it's a minimum of 8 of characters. Test thoroughly!!! Note that usually you would want to check that password meets some minimum requirements such as it includes both upper and lowercase letters and either a number or special character. In Javascript, we use regular expressions to do this. For this assignments, just make sure the password and reentered password match. validates that the username isn't already taken. Create an array of existing valid usernames. Include Harry, Elizabeth, and Shana.add read and write methods to the DictDocumentCollection class above similar to those in TransformedDocument class (except for Documents not for TransformedDocuments) in indexing_process written during the lectures. indexing_process.py import json import typing class Document(typing.NamedTuple): doc_id: str text: str class DocumentCollection: def __init__(self): self.docs: typing.List[Document] = [] def add_document(self, doc: Document): self.docs.append(doc) def get_all_docs(self) -> typing.List[Document]: return self.docs class TransformedDocument(typing.NamedTuple): doc_id: str tokens: typing.List[str] class TransformedDocumentCollection: def __init__(self): self.docs: typing.List[TransformedDocument] = [] def add_document(self, doc: TransformedDocument): self.docs.append(doc) def write(self, path: str): json_data = {'docs': [td._asdict() for td in self.docs]} with open(path, 'w') as fp: json.dump(obj=json_data, fp=fp) @staticmethod def read(path: str) ->…
- Challenge 3: Encryption.java and Decryption.java Write an Encryption class that encrypts the contents of a binary file. Your encryption program should work like a filter, reading the contents of one file, modifying the data into a code, and then writing the coded content out to a second file. The second file will be a version of the first file, but written in a secret code. Use a simple encryption technique, such as reading one character at a time, and add 10 to the character code of each character before it is written to the second file. Come up with your own encryption method. Also write a Decryption class that reads the file produced by the Encryption program. The decryption file will use the method that you used and restore the data to its original state, and write it to a new file.Need help with implementing of this program in C# by using Interface. Task: RenameFile Create an interface IUndoable to represent actions that can be reversed. Create a class that renames a file, and make it undoable..Write code for below problem. The input below is just an example and you should implement independent from the input. Please paste the link to the answer shared using pastebin, dotnetfiddle, jsfiddle, or any other similar web-site. You will have an orthogonal triangle input from a file and you need to find the maximum sum of the numbers according to given rules below; 1. You will start from the top and move downwards to an adjacent number as in below. 2. You are only allowed to walk downwards and diagonally. 3. You can only walk over NON PRIME NUMBERS. 4. You have to reach at the end of the pyramid as much as possible. 5. You have to treat your input as pyramid. According to above rules the maximum sum of the numbers from top to bottom in below example is 24. *1 *8 4 2 *69 85*9 3 As you can see this has several paths that fits the rule of NOT PRIME NUMBERS; 1>8>6>9, 1>4>6>9, 1>4>9>9 1 + 8 + 6 + 9 = 24. As you see 1, 8, 6, 9 are all NOT PRIME NUMBERS and walking over these yields the…
- JAVA Problem – CycleFileOutput Revisit the Cycle class. Modify your application such that the properties will be written to a text file called “Cycle.txt” instead of to the screen. Directions Examine your application for the class called Cycle. Add an appropriate throws statement in the main method. Create a reference to a File class with the appropriate name of a text file (Cycle.txt). Use appropriate code to ensure that the text file exist. Output the values of the variables to the text file. Close the file. Note: Verify the contents were written to the text file using notepad (or any word processor). public class Cycle { // Declear integer instance variable private int numberOfWheels; private int weight; // Constructer declear class public Cycle(int numberOfWheels, int weight ) { this.numberOfWheels = numberOfWheels; this.weight = weight; } // String method for output public String toString() { String wheel = String.valueOf(this.numberOfWheels); String load =…Using JavaFX, create a simple calculator application, like the following: Notes: The operators is ( + : " addition process" , -:subtraction process", *:"multiplication process" , /:"division process" , C : "Clear" , H: "History"); Validate that the first number and second is a numeric value if it is not throwing an exception. When clicking the operators (+, -, *, /): the result will display at the bottom, and stored in history. When clicking C, clear the first, second number and the history. When clicking H, the history will display at the bottom. When the user click / and the second number is 0 throw an arithmetic exception.Implement the following functions in your class: getTotalWords, getUniqueWords, getMostUsedWord, getMaxOccurrence. Name them as indicated here. The last function returns how many times the most common word occurred. The code to add the functions to: import edu.princeton.cs.algs4.*;import edu.princeton.cs.algs4.LinearProbingHashST;import edu.princeton.cs.algs4.SeparateChainingHashST;import edu.princeton.cs.algs4.ST;import edu.princeton.cs.algs4.SequentialSearchST;import edu.princeton.cs.algs4.In;import edu.princeton.cs.algs4.StdOut; public class TestPerf { public static long LinearProbingHashST(String x[]) { LinearProbingHashST<String, Integer> st = new LinearProbingHashST<String, Integer>(); long start = System.currentTimeMillis(); for(int i = 0; i < x.length; i++){ String key = x[i]; if (!st.contains(key)) st.put(key, 1); else st.put(key, st.get(key) + 1);…