Write a method that checks whether the diagonal joining the upper-left and the lower-right corners of a tic-tac-toe board are all the same. TicTacToe.java 1 public class TicTacToe 2 { 3 /** * Return true if all elements on the diagonal joining the upper-left * and the lower-right corners all the same. * @param board a 3 x 3 array of String * @return true if all elements are the same. */ public static boolean checkUpperLeftToLowerRight(String[][] board) { 4 5 6 7 8. 9 10 11 return ...; } 13 } 12

Write a method that checks whether the diagonal joining the upper-left and the lower-right corners of a tic-tac-toe board are all the same. TicTacToe.java 1 public class TicTacToe 2 { 3 /** * Return true if all elements on the diagonal joining the upper-left * and the lower-right corners all the same. * @param board a 3 x 3 array of String * @return true if all elements are the same. */ public static boolean checkUpperLeftToLowerRight(String[][] board) { 4 5 6 7 8. 9 10 11 return ...; } 13 } 12

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

JAVAWrite a program that searches person's name and display all matched name. For example, if a user inputs the letter "Davis", the program searches all name which includes "Davis" in an array. Then, display all matched names on the screen. You must declare a single dimensional array which has all people’s name. Use methods of string class
Write a method that returns the intersecting point oftwo lines. Assume that (x1, y1) and (x2, y2) are thetwo points on line 1 and (x3, y3) and (x4, y4) are on line 2. The method header is:public static double[] getIntersectingPoint(double[][] points)The points are stored in a 4-by-2 two-dimensional array points with (points[0][0], points[0][1]) for (x1, y1). The method returns the intersecting pointor null if the two lines are parallel. Write a program that prompts the user to enterfour points and displays the intersecting point.
Write a method that displays an n-by-n matrix usingthe following header:public static void printMatrix(int n)Each element is 0 or 1, which is generated randomly. Write a test programthat prompts the user to enter n and displays an n-by-n matrix. Here is asample run: Enter n: 3 ↵Enter0 1 00 0 01 1 1
TASK 1 Write a Java method that returns a new array by eliminating the duplicate values in the array using the following method header: 2 public static int[] eliminateDuplicates (int [] list) Write a Java test Program that reads in ten integers, invokes the method, and displays the result. Here is the sample run of the program: Enter ten numbers: 1 2 3 2 1 6 3 4 5 2 JEnter The distinct numbers are: 1 2 3 6 4 5
In java, Write a method checks if a given matrix is a unit matrix. An N x N unit matrix is a matrix of N rows and N columns where all the diagonal elements are ‘1’s and all the remaining elements are ‘0’s. The method should take a 2D array of integers as argument and return a Boolean which is true/false depending on whether the matrix corresponding to the 2D array is a unit matrix or not. Test the method in the ‘main’ method. For problems asking for 'methods', you need to write the method, and the 'main' method which is used as a 'driver' to test the given method.
TASK 3 Write a Java method that returns the location of the largest element in a two-dimensional array. public static int[] locatelargest(double[][] a) The return value is a one-dimensional array that contains two elements. These two elements indicate the row and column indices of the largest element in the two-dimensional array. Write a Java test Program that prompts the user to enter a two- dimensional array and displays the location of the largest element in the array. Here is a sample run: Enter the number of rows and columns of the array: 3 4 -Enter Enter the array: 23.5 35 2 10 -Enter 4.5 3 45 3.5 JEnter 35 44 5.5 9.6 -Enter The location of the largest element is at (1, 2)
Problem 1: Complete the sumOfDiagonals method in SumOfDiagonals.java to do the following: The method takes a 2D String array x as a parameter and returns no value. The method should calculate and print the sum of the elements on the major diagonal of the array x. In order to have a major diagonal, the array passed into the method should be a square (n-by-n), if it's not a square your program should handle that situation by throwing an exception. (Do Not worry about ragged arrays) If the array is a square, but there is a non-integer value on the major diagonal, your program should handle that situation by throwing an exception. When handling the exceptions, be as specific as you can be, (i.e. Do Not just use the Exception class to handle all exceptions in one catch block). Make the proper calls to the sumOfDiagonals method from the main method to test your sumOfDiagonals method on all the String arrays provided in the main method.
java program : Assume the following method is added to the ArrayStack class. What does this method do? public ArrayStack<E> Undefined() { int j = topOfStack; ArrayStack<E> st1= new ArrayStack<E>(topOfStack + 1); for(int i = 0; i < topOfStack + 1; i++) { st1.theData[j] = theData[i]; j-- ; } return st1; } The method will return a stack containing all the elements of “this” stack in the reverse order. The method will return a stack containing the alternative elements of “this” stack in the original order. The method will return a stack containing all the elements of “this” stack in the original order. The method will return a stack containing the alternative elements of “this” stack in the reverse order.
Implement getEvens method Method Details getEvens public static int getEvens(int[] array, int[] result) Initializes the out parameter result with even values found in array Parameters: array - integer array result - integer array Returns: Number of even values found Throws: java.lang.IllegalArgumentException - if array or result (or both) are null, or if result's length is less than array's length. Any error message is fine (e.g., "Invalid parameters(s)")
Write a method that sums the areas of all thegeometric objects in an array. The method signature is:public static double sumArea(GeometricObject[] a)Write a test program that creates an array of four objects (two circles and tworectangles) and computes their total area using the sumArea method.
Exercise 2: Write array methods that carry out the following tasks for an array of integers by creating and completing the "ArrayMethods" class below. Add documentation comments for each method. Provide a test program called Labs_yourID.java" that tests methods of ArrayMethods class. In your test program, use random class to generate array values. public class ArrayMethods prívate int[ ] values: //declare instant variables public ArrayMethods (int[] initialValues) (values = initialValues:) //constructor public void shiftRight() () public boolean ad jacentDuplicate() () ... • Method shiftRight: that shifts all elements by one to the right and move the last element into the first position. For example, 1 49 16 25 would be transformed into 25 1 4 19 16. • Method ad jacentDuplicate: returns true if the array has two adjacent duplicate elements.
a Java method that will take in a double array as its sole parameter and return the difference between the highest and lowest values currently stored in the array. The header is: public static double getDiff ( double [ ] array )