public class main {public static void main(String[] args) {Polygon[] shapes = new Polygon[3];shapes[0]shapes[1]shapes[2]= new Triangle(3.0,4.0,5.0);new Triangle(17.0,12.0,9.0);= new Rectangle(6.0,2.0);System.out.println("Shapes: ");for ( Polygon p : shapes ) {System.out.println(p);System.out.println("has area10+ p.area() ++ p. perimeter() );1112and perimeterSystem.out.println();}}13141516}Polygon Interface: Any class that inherits a Interface must implementthese methods.DON'T MAKE ANY CHANGES IN THIS FILEpublic interface Polygon {/*Calculates the area of the Polygon*/10public double area();1112/*Calculates the perimeter of the Polygon*/public double perimeter();} Create a class called Rectangle that implements the Polygon interfaceMust have a default constructor that sets:double: width = 1double: height = 1Must have another Constructor that takes in:double: width --> 1st argumentdouble: height --> 2nd argument10Must have setters and getters for width and height.double getWidth()double getHeight()void setHeight()1112131415void setWidth()1617Must have a tostring (test Provided)"String tostring()" should return the following:"Rectangle width & height: " + width + ", ▪1820heighte */import java.lang. Math;Create a class called Triangle that uses the Polygon interface;Assume this is a right triangledouble a, b, c;Must have a default constructor that sets:a = 311b = 412C = 5Must have a Constructor that takes in 3 variables:a --> 1st argumentb --> 2nd argumentC --> 3rd argumentMust have setters and getters for all the variablesdouble getA()void setA()19202223...24Must have a toString (test Provided)"String tostring()" Should return the following:"Triangle edge lengths: " + a + ", " +25262728

public interface Polygon { //declaring methods public double area(); public double perimeter(); }

Answered: public class main { public static void…

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

See similar textbooks

Similar questions

class Output{public static void main(String args[]){byte a[] = { 65, 66, 67, 68, 69, 70 };byte b[] = { 71, 72, 73, 74, 75, 76 };System.arraycopy(a , 0, b, 0, a.length);System.out.print(new String(a) + " " + new String(b));}} The output of the above Java code is ?
public class Main { static int findPosSum(int A[], int N) { if (N <= 0) return 0; { if(A[N-1]>0) return (findPosSum(A, N - 1) + A[N - 1]); else return findPosSum(A, N - 1); } } public static void main(String[] args) { int demo[] = { 11, -22, 33, -4, 25,12 }; System.out.println(findPosSum(demo, demo.length)); } } Consider the recursive function you wrote in the previous problem. Suppose the initial call to the function has an array of N elements, how many recursive calls will be made? How many statements are executed in each call? What is the total number of statements executed for all recursive calls? What is the big O for this function?
Please help fast
public class ArraySection { static void arraySection(int a[], int b[]) { int k = 0; int [] c = new int[a.length]; for(int i = 0; i < a.length; i++) { for(int j = 0; j < b.length; j++) if(a[i] == b[j]) c[k++] = a[i];         } for(int i = 0; i < k; i++) System.out.println(c[i]); System.out.println(); } public static void main(String[] args) { int a[] = { 1, 2, 3, 4, 5 }; int b[] = { 0, 2, 4,5 };         arraySection(a,b);     }} Calculate the algorithm step number and algorithm time complexity of the above program?
import java.util.Scanner; public class Inventory { public static void main (String[] args) { Scanner scnr = new Scanner(System.in);    InventoryNode headNode;    InventoryNode currNode; InventoryNode lastNode; String item; int numberOfItems; int i; // Front of nodes list     headNode = new InventoryNode(); lastNode = headNode; int input = scnr.nextInt(); for(i = 0; i < input; i++ ) { item = scnr.next(); numberOfItems = scnr.nextInt(); currNode = new InventoryNode(item, numberOfItems); currNode.insertAtFront(headNode, currNode); lastNode = currNode; } // Print linked list     currNode = headNode.getNext(); while (currNode != null) { currNode.printNodeData(); currNode…
public class Tester{ public static void main(String[] args) { Segment[] segments =   {   new Segment(1, 5), // measure 4 new Segment(5, 1), // measure 4 new Segment(1, 1), // measure 0 new Segment(1, 3) // measure 2 }; System.out.println(average(segments)); System.out.println("Expected: 2.5"); } /** Computes the average of the measures of the given objects. @param objects an array of Measurable objects @return the average of the measures */ public static double average(Measurable[] objects) { if (objects.length == 0) { return 0; } double sum = 0; for (Measurable obj : objects) { sum = sum + obj.getMeasure(); } return sum / objects.length; }} /** Describes any class whose objects can be measured.*/public interface Measurable{ /** Computes the measure of the object. @return the measure */ double getMeasure();} The Segment…
public class arrayOutput ( public static void main (String [] args) { final int NUM ELEMENTS = 3; int[] userVals = new int [NUM_ELEMENTS]; int i; } Type the program's output userVals [0] = 2; userVals [1] = 6; userVals [2] = 8; for (i = userVals.length - 1; i >= 0; −−1) { System.out.println(userVals [1]); } C.C. ? ? ??
using System; class TicTacToe { staticint player = 1; staticint choice; staticvoid Print(char[] board) { staticvoid Main(string[] args) { Console.WriteLine(); Console.WriteLine($" {board[0]} | {board[1]} | {board[2]} "); Console.WriteLine($" {board[3]} | {board[4]} | {board[5]} "); Console.WriteLine($" {board[6]} | {board[7]} | {board[8]} "); Console.WriteLine(); char[] board = newchar[9]; for (int i = 0; i < 9; i = i + 1) { board[i] = ' '; if( board[i]== 'O') Console.Write("It is your turn to place an X"); } Print(board); board[4] = 'X'; Print(board); board[0] = 'O'; Print(board); board[3] = 'X'; Print(board); board[5] = 'O'; Print(board); board[6] = 'X'; Print(board); board[2] = 'O'; Print(board); } } } Hello, what can be added to this program to make it compile? just a small simple change
using System; class TicTacToe { staticvoid Print( char[] board) { Console.WriteLine(); Console.WriteLine($" {board[0]} | {board[1]} | {board[2]} "); Console.WriteLine($" {board[3]} | {board[4]} | {board[5]} "); Console.WriteLine($" {board[6]} | {board[7]} | {board[8]} "); Console.WriteLine(); } staticvoid Main(string[] args) { char[] board = newchar[9]; for (int i = 0; i < 9; i = i + 1) { board[i] = ' '; if( board[i]== 'O') Print("It is your turn to place an X"); } Print(board); board[4] = 'X'; Print(board); board[0] = 'O'; Print(board); board[3] = 'X'; Print(board); board[5] = 'O'; Print(board); board[6] = 'X'; Print(board); board[2] = 'O'; Print(board); } } Hello I can't get my code to compile
using System; class TicTacToe { staticint player = 1; staticint choice; staticvoid Print( char[] board); staticvoid Main(string[] args) { Console.WriteLine(); Console.WriteLine($" {board[0]} | {board[1]} | {board[2]} "); Console.WriteLine($" {board[3]} | {board[4]} | {board[5]} "); Console.WriteLine($" {board[6]} | {board[7]} | {board[8]} "); Console.WriteLine(); } staticvoid Main(string[] args) { char[] board = newchar[9]; for (int i = 0; i < 9; i = i + 1) { board[i] = ' '; if( board[i]== 'O') Console.Write("It is your turn to place an X"); } Print(board); board[4] = 'X'; Print(board); board[0] = 'O'; Print(board); board[3] = 'X'; Print(board); board[5] = 'O'; Print(board); board[6] = 'X'; Print(board); board[2] = 'O'; Print(board); } } Hello! I need help with getting my code to compile. It's written in C# and i'm a beginner. it's giving me two errors and i'm not sure how to fix them. Please don't copy paste an answer from google.
package lab06;;public class gradereport { public static void main(String[] args) { Scanner in = new Scanner(System.in);double[] Scores = new double[10]; for(int i=0;i<10;i++){ System.out.println("Enter score " + (i+1));scores[i]=in.nextdouble(); } for(int i=0;i<10;i++){ if (scores[i] >=80) System.out.println("Score " + (i+1) + " receives a grade of HD"); else if (scores[i]>=70) System.out.println("Score " + (i+1) + " receives a grade of D"); else if (scores[i] >=60) System.out.println("Score "+ (i+1) + " receives a grade of C"); else if (scores[i] >=50) System.out.println("Score " + (i+1) + " receives a grade of P"); else if (scores[i] >=40) System.out.println("Score " + (i+1) + " receives a grade of MF"); else if (scores[i] >=0) System.out.println("Score " +…
import java.awt.*; public class TestRectangle {public static void main(String[] args) {Rectangle r1 = new Rectangle(5, 4, 10, 17);Rectangle r2 = new Rectangle(10, 10, 20, 3);Rectangle r3 = new Rectangle(0, 1, 12, 15);Rectangle r4 = new Rectangle(10, 10, 20, 3);System.out.println("r1 = " + r1);System.out.println("r2 = " + r2);System.out.println("r3 = " + r3);System.out.println("r2 equals r1? " + r2.equals(r1));System.out.println("r2 equals r2? " + r2.equals(r2));System.out.println("r2 equals r3? " + r2.equals(r3));System.out.println("r2 equals r4? " + r2.equals(r4)); System.out.println("r1 contains (6, 8)? = " + r1.contains(6, 8));System.out.println("r2 contains (6, 8)? = " + r2.contains(6, 8));System.out.println("r3 contains (6, 8)? = " + r3.contains(6, 8));System.out.println("r2 contains (30, 13)? = " + r2.contains(30, 13)); r1.intersect(r3);r2.intersect(r4);System.out.println("r1 intersect r3 = " + r1);System.out.println("r2 intersect r4 = " + r2);…

SEE MORE QUESTIONS

Recommended textbooks for you

Database System Concepts

Computer Science

ISBN:

9780078022159

Author:

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

Publisher:

McGraw-Hill Education

Starting Out with Python (4th Edition)

Computer Science

ISBN:

9780134444321

Author:

Tony Gaddis

Publisher:

PEARSON

Digital Fundamentals (11th Edition)

Computer Science

ISBN:

9780132737968

Author:

Thomas L. Floyd

Publisher:

PEARSON

Database System Concepts

Computer Science

ISBN:

9780078022159

Author:

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

Publisher:

McGraw-Hill Education

Starting Out with Python (4th Edition)

Computer Science

ISBN:

9780134444321

Author:

Tony Gaddis

Publisher:

PEARSON

Digital Fundamentals (11th Edition)

Computer Science

ISBN:

9780132737968

Author:

Thomas L. Floyd

Publisher:

PEARSON

C How to Program (8th Edition)

Computer Science

ISBN:

9780133976892

Author:

Paul J. Deitel, Harvey Deitel

Publisher:

PEARSON

Database Systems: Design, Implementation, & Manag…

Computer Science

ISBN:

9781337627900

Author:

Carlos Coronel, Steven Morris

Publisher:

Cengage Learning

Programmable Logic Controllers

Computer Science

ISBN:

9780073373843

Author:

Frank D. Petruzella

Publisher:

McGraw-Hill Education

SEE MORE TEXTBOOKS