1_senator_pca - Jupyter Notebook

Python Please. An interesting puzzler for chess buffs is the Knight’s Tour problem, originally proposed by the mathematician Euler. Can the knight piece move around an empty chessboard and touch each of the 64 squares once and only once? We study this intriguing problem in depth here. The knight makes only L-shaped moves (two spaces in one direction and one space in a perpendicular direction). Thus, as shown in the figure below, from a square near the middle of an empty chessboard, the knight (labeled K) can make eight different moves (numbered 0 through 7). A: Draw an eight-by-eight chessboard on a sheet of paper, and attempt a Knight’s Tour by hand. Put a 1 in the starting square, a 2 in the second square, a 3 in the third, and so on. Before starting the tour, estimate how far you think you’ll get, remembering that a full tour consists of 64 moves. How far did you get? Was this close to your estimate? B: Now let’s develop a script that will move the knight around a chessboard…

please write the python code to implement without error for this problem. I am stuck.

LANGUAGE IS C++ searching and sorting while using arrays and nested for loops.

Use python machine learning. A group of data scientists want to analyze some data. They already cleaned up the data, with the result being a Dataframe called X_train. The Dataframe X_train has 1058 rows and 13 columns. It has the below columns (picture attached on how it looks like): 'LotFrontage','LotArea','BsmtFinSF1', 'BsmtFinSF2', 'BsmtUnfSF','TotalBsmtSF','1stFlrSF', '2ndFlrSF', 'LowQualFinSF', 'GrLivArea','TotRmsAbvGrd','GarageArea','OpenPorchSF'   Answer the following questions: 1. Transform X_train using PCA. Assign the output to a variable X_train_pca. 2. What is wrong with above approach? Scale the data, then repeat the above.

Using a csv file attached (https://file.io/NMvbdnv4E3r0), Create a program on python that use the csv file. The program should accept a user's input of a compound. It should output the molar mass (in 2 decimal places only) of the compound.by using the csv file to compute for the atomic mass at name of the elements. Furthermore, if the "elements involved" are wrong an invallid message should be outputted and only existing chemical symbols are the output. The same goes for wrong input of the "number of atoms" wherein a wrong an invallid message should be outputted and only integers are to be inputted by the user. Program should look like this:  Enter compound: C6H12O6 Enter elements involved: C,H,O Enter no. of Carbon atoms:  AA Enter no. of Hydrogen atoms: 12 Enter no. of Oxygen atoms: 6 Wrong input of number of atoms! Try again.   or   Enter compound: C6H12O6 Enter elements involved: C,H,O   Enter no. of Carbon atoms:  6 Enter no. of Hydrogen atoms: 12 Enter no. of Oxygen atoms: 6…

The task is to implement part of a linter program using python. Specifically, you must be able to scan for grouping symbols ( "()", "[]", "{}” ) and ensure that there are no hanging open symbols or stray closing symbols in the source file. The implementation must involve recursion in terms of scanning for the scope. If a different closing symbol is encountered or the end of file is reached, the error message "Line : missing closing symbol for "" should be displayed. For stray closing tags, the message "Line : stray closing symbol for "". Note: Do not use "stack" in your code.

Answer it. Help me out?

The task is to implement part of a linter program using python. Specifically, you must be able to scan for grouping symbols ( "()", "[]", "{}") and ensure that there are no hanging open symbols or stray closing symbols in the source file. There will be files you will need to scan so you need the open() in your code. Also, you can use the read() or readlines() to know which lines has no opening or stray closing symbols. Example: You scan this code from a file, and you notice that there is a stray closing symbol ")". 1 int main(void) { . 123 2 3 4 printf("Hello world")); return 0; } The implementation must involve recursion in terms of scanning for the scope. If a different closing symbol is encountered or the end of file is reached, the error message "Line : missing closing symbol for "" should be displayed. For stray closing tags, the message "Line : stray closing symbol for "". Do not use "stack" in your code.

Python Question The campus is pretty big. There are n buildings scattered around it, numbered from 0 to n-1. These buildings are so far away from each other that the only way to get from one to another is to take a campus bus. There are m campus bus routes. The i-th one (0 <= i < m) takes you from building u_i to building v_i (but not the other way around). These buses run very frequently. Professor Zingaro is deciding where to hold his CS lectures. He believes a building x is accessible from a building y if you can get from y to x taking at most two buses. For his students’ convenience, he wants to hold his lectures in the most accessible building. Help him out by telling him how many buildings the most accessible building is accessible from. In addition, list all buildings that are the most accessible. Input The first line of the input contains two space-separated integers n and m, denoting the number of buildings and bus routes, respectively. m lines follow. The i-th one…

I need the code from start to end with no errors and the explanation for the code ObjectivesJava refresher (including file I/O)Use recursionDescriptionFor this project, you get to write a maze solver. A maze is a two dimensional array of chars. Walls are represented as '#'s and ' ' are empty squares. The maze entrance is always in the first row, second column (and will always be an empty square). There will be zero or more exits along the outside perimeter. To be considered an exit, it must be reachable from the entrance. The entrance is not an exit.Here are some example mazes:mazeA7 9# # ###### # #   ## # # #### #     ## ##### ##       ########## RequirementsWrite a MazeSolver class in Java. This program needs to prompt the user for a maze filename and then explore the maze. Display how many exits were found and the positions (not indices) of the valid exits. Your program can display the valid exits found in any order. See the examples below for exact output requirements. Also, record…

Write a Python program, in a file called forest_map.py, to solve the following problem: Hansel and Gretel are abandoned in a forest with only a bag of breadcrumbs and must find their way home. The forest is laid out in a grid pattern. They can only take a step at a time through the forest, going either South or East. They cannot move diagonally, they cannot move North, and they cannot move West. As they leave a space, they will leave a breadcrumb (“*”) behind just in case -- if they have any breadcrumbs left. They do not leave a breadcrumb in the space where the path ends. If they don’t have enough breadcrumbs, they still move on to the next space, leaving their current space as it was. Given (as input) the number of breadcrumbs Hansel and Gretel have, and given the forest layout (as a fixed, but changeable, two-dimensional list in your code), determine whether Hansel and Gretel have just enough, more than enough, or not enough, breadcrumbs to leave in the path to get to the end. If…

Please help with creating the code as follows: Task 2(a): Implement the FFT algorithm using the above pseudocode as the function FFT(). Notethat we have introduced a sign parameter in the FFT pseudocode to specify the sign of the exponent in ωn.If sign is 1, ωn = e2πi/n. If sign is -1, ωn = e−2πi/n.Task 2(b): Then implement the inverse FFT as the function IFFT() that calls the FFT function youwrote with the appropriate inputs, and then normalizes the output by n. Example Task 2(a): Fast Fourier Transform   FFT <input_file.txt> <output_file.txt>where input_file.txt contains the coefficients of the polynomial, this query should read thenumbers from input_file.txt, compute the FFT, and output the result to output_file.txt.Note: This FFT query has the same name as the FFT function in the pseudocode. It should beclear from the context which one we are referring to.Example 1:task2a_input1.txt1.0002.0003.000FFT task2a_input1.txt…

We can dynamically resize vectors so that they may grow and shrink. While this is very convenient, it is inefficient. It is best to know the number of elements that you need for your vector when you create it. However, you might come across a situation someday where you do not know the number of elements in advance and need to implement a dynamic vector. Rewrite the following program so that the user can enter any number of purchases, instead of just 10 purchases. Output the total of all purchases. Hint: us do while loop with your vector.. #include <vector> #include <iostream>  using namespace std;  int main() {   vector<double> purchases(10);   for (int i = 0; i < 10; i++)   {     cout << "Enter a purchase amount";     cin >> purchases[i];   }   return (0); }

please use python language instruction- 1. Read the code from line 123 to line 137. This is the basically the selection.
Remember how we talk about there are certain things about controlling population?
Please explain how we make sure that the population, when going through a selection, does not shrink over generation. You may simply explain this as comments in a Python file as opposed to in a Word file:.
Note that the code from line 123 to line 137 is divided into two small blocks. Use that as 2. The code we've just examined has one functionality of selection. So, we really should wrap that into one function nanied 'select'. Note that in this file there is no class named
'Population'. So, you should make this function a static method that belongs to the class named 'Individual', or a simple function that resides outside the class named
'Individual'. Please think about what the inputs and output of this function are before you start coding. Once you have created the…

In C language, take an Infix expression from the user and apply a check if the user has entered two operators together by mistake. If yes, delete the 2nd operator. Try to work with only one array.

Use Python.   Q1. Suppose deg is an angle in degrees.  Write down the NumPy code that computes the counterclockwise rotation matrix.  Don't forget to convert the angles into radians when necessary.   def rotate(deg):   Q2. Let x be a vector.  How do you use rotate(deg) to find a vector y that is normal to x?  Namely <x,y> = 0.   y = ...   Q3. Let x be a vector.  How do you find a vector v in the same direction as x but with |v| = 1.   v = ...   Q4. A hyperplane in 2D is the same as a line.  A hyperplane is defined by a normal vector w and a bias scalar b.  Write down the expression that defines points on the line that is the hyperplane in 2D defined by (w, b).   { x : ... }   Q5. Given a vector x, and a hyperplane P defined by (w, b).  Describe how to compute the point v that is the projection of x on to the plane P.

A matrix's trace is equal to its trace transposed. The diag method of Numpy may be used to extract the elements along the diagonal of a square matrix. Retrieving data from diagonals above or below the primary diagonal is possible using the optional parameter k. The call trace, just like in Python programming, may be used to get a matrix's trace.

Lets say we are creating a python game.  A word is displayed gets displayed on the screen. The players of the game must type as many words as they an that are related to the word that is displayed. If players type in the same word multiple times, it is ignored.  One the players are done taking turns, the program gives each player a score that is based off how many wrods they entered that are similiar to what other words players have entered. So for a player to get a point, the word they typed must be typed by another student. QUESTION: We need to store the words typed by the players and all words etered. Would we use a list, set, dict or tuple?