public static void sketch(int x1, int y1, int x2, int y2, int n) ( if (n <= 0) drawLine(x1, y1, x2, y2); else { int xm (x1 + x2 + y1 - y2) / 2; int ym (y1+ y2 + x2-x1) / 2; sketch(x1, y1, xm, ym, n - 1); sketch(xm, ym, x2, y2, n - 1); W } Assume that the screen looks like a Cartesian coordinate system with the origin at the center, and that drawLine connects (x1,y1) to (x2,y2). Assume also that x1, y1, x2, and y2 are never too large or too small to cause errors. Which picture best represents the sketch drawn by the method call sketch(a, 0, -a, 0, 2) where a is a positive integer?

public static void sketch(int x1, int y1, int x2, int y2, int n) ( if (n <= 0) drawLine(x1, y1, x2, y2); else { int xm (x1 + x2 + y1 - y2) / 2; int ym (y1+ y2 + x2-x1) / 2; sketch(x1, y1, xm, ym, n - 1); sketch(xm, ym, x2, y2, n - 1); W } Assume that the screen looks like a Cartesian coordinate system with the origin at the center, and that drawLine connects (x1,y1) to (x2,y2). Assume also that x1, y1, x2, and y2 are never too large or too small to cause errors. Which picture best represents the sketch drawn by the method call sketch(a, 0, -a, 0, 2) where a is a positive integer?

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Write a static method that draws an arrow line from astartingpoint to an ending point in a pane using the following method header:public static void drawArrowLine(double startX, double startY,double endX, double endY, Pane pane) Write a test program that randomly draws an arrow line, as shown in Figure.
Exercise 2: The intersection method computes the intersection of two rectangles- that is, the rectangle that would be formed by two overlapping rectangles if they were drawn, as shown at right. You call this method as follows: Rectangle r3 = r1.intersection (r2); Write a program IntersectionPrinter that constructs two rectangle objects, prints them as described in Exercise 1, and then prints the rectangle Intersection object that describes the intersection. Then the program should print the result of the intersection method when the rectangles do not overlap. Add a comment to your program that explains how you can tell whether the resulting rectangle is empty. The random class implements a random number generator, which produces sequences of numbers that appear to be random. To generate random integers, you construct an object of the Random class, and then apply the nextInt (50) gives you a random number between 0 and 49. Use the Random class to construct the two rectangle objects.
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public class Geometry{public static void main(String[] args){//asks for user's choice Scanner in = new Scanner(System.in);displayMenu();selectOption(choice);System.out.println("Enter your choice (1-3): ");int choice1 = in.nextInt();System.out.println("Thanks for using the Geometry Calculator - Goodbye!");//Prints if input is a number that is not one of the choiceswhile(choice1 < 1 || choice1 > 3 ){System.out.println("Invalid choice. Please enter 1 - 3: ");choice1 = in.nextInt();}}/**Displays the menu*/public static void displayMenu(){System.out.println("Welcome to the Geometry Calculator Application");System.out.println("1. Calculate the Area of a Circle");System.out.println("2. Calculate the Area of a Rectangle");System.out.println("3. Calculate the Area of a Triangle");}/** This method calculates the area of the circle@return the area of the circle*/public static double circle()// calculates the area of the circle{Scanner in = new Scanner(System.in);System.out.println("What is…
class Param3 { public int x; private void increase(int p) { x = x*p; } public void calculateX(int y) { increase(y); } public int getX() { return x; } } // in another class Param3 q3 = new Param3(); q3.x = 5; q3.calculateX(7); System.out.println(q3.getX()); what would be the answer for the last two lines ? also above were x = x*p do both x in here are the fields? wouldn't that be cnofusing?
public class Polygon { private double sideLength; private int sides; private String shape; public double getArea () { int n sides; double a sideLength; return ((a * a * n) / (4 * Math.tan((180 / n) 3.14159 / 180))); public void setPolygon (double sl, int sd, String sh) { sides-sd; sideLength-sl; shape=sh; public Polygon (double sl, int sd, String sh) ( sides-sd; sideLengthsl; shape=sh; public String getShape () { return (shape); } public int getSides () { return (sides); } public double getLength () { return (sideLength); } Write a static method named find that takes as a parameter an array of type Polygon named list. The method should print the shapes of each polygon that has an area greater than 500 and return their count. The method prototype is public static int find (Polygon [] list); Note: assume the array is already declared, populated with data in the main method and ready to be used.
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In C++ class rectangleType { public:     void setLengthWidth(double x, double y); //Sets the length = x; width = y;     void print() const; //Output length and width     double area(); //Calculate and return the area of the rectangle (length*width)     double perimeter(); //Calculate and return the perimeter (length of outside boundary of the rectangle) private:     double length;     double width; }; Print out the area of the rectangle.
In C++ class rectangleType { public:     void setLengthWidth(double x, double y); //Sets the length = x; width = y;     void print() const; //Output length and width     double area(); //Calculate and return the area of the rectangle (length*width)     double perimeter(); //Calculate and return the perimeter (length of outside boundary of the rectangle) private:     double length;     double width; }; Declare an instance of rectangleType.
Please do not give solution in image format thanku packagecom.abc.base; public class MyDataTypes { public static void main(String[] args) { int a=10; int b=20; System.out.println("a="+a); System.out.println("b="+b); } } //swap the value between a and b without creating any third varialbe.
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