Do NOT plagiarize. No group work. All work should be your own. Do not discuss your work with other students in the class. You CANNOT borrow code from online sources.Use Python to create a simple calculator that accepts Reverse Polish Notation (RPN) and displays the final answer (Intermediate steps or results need not be displayed). It only accepts 4 operators “+”, “-“, “*”, “/”. Input numbers will be single digits. The input will be in postfix notation. The input will be provided in a text file called input_RPN.txt. Your program should not ask the user for any input. There will be one RPN expression in each line. Your code should be able to read the file and print the result for each RPN in a new line. Example of RPN: 4 2 + and your output should be 6. This is a simple expression. More complex algebraic notations will be used to test your program like the one below. Example algebraic notation: ( 4 + 2 * 5 ) / ( 1 + 3 * 2 ) Translated into RPN: 4 2 5 * + 1 3 2 * + / Note: - Your code should be able to read the input file from the same folder (which has your .py file). Do not hard code the path to the file in your laptop/desktop. Use os to get the path and read the input file. Also, please take special care to process the line-ending character correctly; for example, if you write the program on a Mac it should work correctly when graded using Windows and vice versa. Extra credit (5 points each) Write a separate program that can input an algebraic expression and convert it to RPN and then evaluate the RPN. Print the RPN and the result in separate lines. If you are implementing extra credit, your file should be name as <netid>_EC.py. The input file name will be input_RPN_EC.txt and it will have algebraic expressions.Add more operators (unary subtraction, or modulo division, etc.). You must document what operators you are adding. Add which ones to comments and make sure to include that as well in your submission so the GTA knows to test using the extra scenarios.

Note : Ensure that the program work as per instruction and please do provide details on how to complie the code. Instructions:On your computer c: drive create a folder called myjava. Save the following code in a file called DataWork.java inside the myjava directory and make changes in that file in the places as given below each commented section. Then save the file.Open a command prompt and cd c:\myjava. Then compile by giving the javac DataWork.java command on command prompt.Run by giving command java DataWork.Make sure no errors and fix if any.Or copy the code in jGRASP, then save it in c:\myjava and run it./******************* Name: Date: Week 2Notes *******************/public class DataWork{ // create 4 variables of different data types // Example: private int count; public void compare() { // Use two different comparison operators for each data type declared // and print the output for each of those // Example: System.out.println(" count > 5:"+(count > 5)); } public static void main (String args []) { DataWork dw = new DataWork(); dw.compare(); }}Submission Instructions:Make sure that you include all source codes and the compiled codes into W2_firstname_lastname.zip.You must leave me a note in the Submitted Text area on how to compile and run your code.

Simple Linear Regression: For this assignment, we will use the dataset nba_contracts.csv, which can be found on our class Blackboard page. Start by downloading this dataset. 1. Read the dataset into your environment in R. 2. Create a new variable called ppg. This new variable, which stands for “points per game” will be created by dividing points by games played