Giving the following code class Rectangle: def __init__(self, l, w): self.length = l self.width = w def rectangle_area(self): return self.length*self.width def rectangle_perimeter(self): return (self.length+self.width)*2 R1 = Rectangle(20, 12) print(R1.rectangle_area()) print(R1.rectangle_perimeter()) R2 = Rectangle(200, 112) print(R2.rectangle_area()) Answer the questions 1) How many classes we have on the above example 2) What is the role of the method __init__(....... ) 3) How many methods are defined

Giving the following code class Rectangle: def init(self, l, w): self.length = l self.width = w def rectangle_area(self): return self.lengthself.width def rectangle_perimeter(self): return (self.length+self.width)2 R1 = Rectangle(20, 12) print(R1.rectangle_area()) print(R1.rectangle_perimeter()) R2 = Rectangle(200, 112) print(R2.rectangle_area()) Answer the questions 1) How many classes we have on the above example 2) What is the role of the method init(....... ) 3) How many methods are defined

Microsoft Visual C#

7th Edition

ISBN:9781337102100

Author:Joyce, Farrell.

Publisher:Joyce, Farrell.

Chapter9: Using Classes And Objects

Section: Chapter Questions

Problem 2CP

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class Pt: def init_(self, x, y): self.x X P(3,4) self.y = y def _str__(self): x, y = self.x, self.y return f'P({x},{y})' True 18 # add coordinate-wise def add_(self, other): nx = 13 14 ny = 15 16 return 17 Pt(1, 1) b = Pt (2, 3) с %3D а + b d = b + Pt(5, 6) print (c) print ( isinstance (d, Pt)) print (d) %3D
#include <iostream> using namespace std; class Rectangle { // define class public: Rectangle() { length = 0; width = 0; } // constructor float getlength() { return length; } // return length float getWidth() { return width; } // return width float area() { return length* width; } // return area float perimeter() { return 2 * length + 2 * width; } void setValues(float, float); private: float length, width; }; void Rectangle::setValues(float len, float wid) { if (len <= 0 || len >= 20) { cout << "Enter new value for length "; cin >> len; } length = len; if (wid <= 0 || wid >= 20) { cout << "Enter new value for width "; cin >> wid; } width = wid; } int main() { float length, width; Rectangle r; cout << "Enter a value for length and width between 0 and…
Giving the following code class Rectangle: definit__(self, 1, w): self.length=1 self.width = w def rectangle_area(self): return self.length*self.width def rectangle perimeter(self): return (self.length+self.width)*2 R1 = Rectangle(20, 12) print(R1.rectangle_area()) print(R1.rectangle_perimeter()) R2 Rectangle(200, 112) print(R2.rectangle_area()) Answer the questions 1) How many classes we have on the above example 2) What is the role of the method __init__() 3) How many methods are defined 4) How many objects are created 5) How we invoke any method. Cite an example from the above code 6) Instanciate 2 rectangles using your Rectangle class 2
x = 3 + numbers[3]++; System.out.println(x); QUESTION 2: Class Rectangle has two data members, length (type of float) and width (type of float). The class Rectangle also has the following: //mutator methods void setlength (float len) } //B. length = len; H accessor methods float getLength() I return length; The following statement creates an array of Rectangle with size 2: Rectangle[] arrayRectangle= new Rectangle[2]; Is it correct if executing the following statements? What is the output? If it is not correct, write the correct one arrayRectangle. setLength (12.59); System.out.printin[rectangle Set.getLength()); arrayRectangle[1].setLength(4.15); System.out.println(arrayRectangle[1].getLength()): QUESTION 3: Use the following int array int[] numbers = { 42, 28, 36, 72, 17, 25, 81, 65, 23, 58} -Open file data.txt to write. to write the values of the array numbers to the file with the y numbers to get the values
class TicTacToePlayer: # Player for a game of Tic Tac Toe def __init__(self, symbol, name): self.symbol = symbol self.name = name def move(self, board): move = int(input(self.name + " make your move 1-9:")) move -= 1 y = move % 3 x = move // 3 board[x][y] = self.symbol def is_symbol(self, symbol): if symbol == self.symbol: return True class TicTacToe: # Game of TicTacToe in a class! def __init__( self, p1_symbol="X", p2_symbol="O", p1_name="Player1", p2_name="Player2" ): self.p1 = TicTacToePlayer(p1_symbol, p1_name) self.p2 = TicTacToePlayer(p2_symbol, p2_name) self.board = [[" " for x in range(3)] for x in range(3)] def play_game(self): turn = 0 winner_symbol = False while not winner_symbol: self._print_board() if turn % 2: self.p2.move(self.board) # replace this line with a call…
Computer Science You are required to develop a small chatting application where two or more friends can communicate each other through messages. Create a class Message which has Date d, and message (string). Provide getters/setters, constructors, toString. Create a class Friend having String name, String contact, email and ArrayList of Messages provide getters/setters, constructors, toString addMessage(Message m) method which will add new message to the list. Provide following options to the user using JFrame. Login which will help user login to the application. View Friends (Display List of All Friends) View Messages ( This should display all message of a Friend) Send message (This should ask for friend name and message match the friend name and write that message to the array list).
class implementation file -- Rectangle.cpp class Rectangle { #include #include "Rectangle.h" using namespace std; private: double width; double length; public: void setWidth (double); void setLength (double) ; double getWidth() const; double getLength() const; double getArea () const; } ; // set the width of the rectangle void Rectangle::setWidth (double w) { width = w; } // set the length of the rectangle void Rectangle::setLength (double l) { length l; //get the width of the rectangle double Rectangle::getWidth() const { return width; // more member functions here
3. Magic Square: Create a class MagicSquare that prompts the user for a positive odd integer size, generates a normal magic square of order size, and prints it with numbers right-justified and aligned in evenly-spaced columns. You may assume the numbers in the square are 3 digits or less (i.e. size ≤31). However, each space-separated column should have a width equal to the largest integer in the magic square. (See example transcripts below.) To generate the magic square, use the following algorithm: Assign 1 to our initial current position: the bottom row, middle column. Place each successive value (up to size * size) in the first of the following positions that is unoccupied: (1) one space down and to the right, or (2) one space up. Positions wrap around the sides, top and bottom, as shown in the following example transcripts (user input underlined): Please enter a positive odd integer: 3 492 357 8 16 Please enter a positive odd integer: 5 11 18 25 2 9 10 12 19 21 3 4 6 13 20 22 23 5…
Implement the following classes: Polygon numSide: int /* constructor */ /* accessor-mutator */ + area (): double + perimeter (): double Triangle sideA: double sideB: double sidec: double /* constructor */ /* accessor-mutator */ + area () : double + perimeter (): double Create an object for Triangle class and invoke area and perimeter method. Input Format Take triangle sides (sideA,sideB,sideC) as input from user. Constraints For Triangle, sideB+sideC > sideA
int getUpperScore(){ int upperScore = 0; for(int i = ONES; i <= SIXES; i++){ upperScore += score[i]; } return upperScore + getBonusScore(); } //Returns the score of the upper part of the board int getLowerScore(){ int lowerScore = 0; for(int i = THREE_OF_KIND; i <= YAHTZEE; i++){ lowerScore += score[i]; } return lowerScore; } //Returns the bonus points int getBonusScore(){ const int UPPER_SCORES_THRESHOLD = 63; const int BONUS_POINTS = 35; if(getUpperScore() >= UPPER_SCORES_THRESHOLD){ return BONUS_POINTS; } return 0; } //Returns the total score int getTotalScore(){ return getUpperScore() + getLowerScore(); } Test 10: Check upper board and having bonus correctly (0/3) failed
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1. Square Roots Create a class with a method that, given an integer, returns an array of double-precision floating point numbers (known in Java as double), each of which is a square root of a number between 2 and the parameter to the method. For example, if the parameter is 5, the method should return an array of 4 doubles, with approximate values 1.4142135623, 1.7320508075, 2.0, and 2.2360679774. Your method should check the validity of the parameter, and take appropriate action if the parameter is invalid. 2. Reading Files Create a class with a method that, given a string representing a file name, returns an integer with the number of characters in the file. For example, if the file has 10 characters, your method must return the number 10. 3. Main Class Create a class HW1.java with a main method that does both of the following: calls the method from part 1 with a random integer between 0 and 10, and prints each of the numbers in the result. The numbers should all be printed on the…