Please answer the question in the attachment. It is a past AP Computer Science frq question that has already been answered, but I would like to see another way to approach the problem. b) Write the method evaluate Light, which computes and returns the status of a light at a givenrow and column based on the following rules.1. If the light is on, return false if the number of lights in its column that are on is even,including the current light.2. If the light is off, return true if the number of lights in its column that are on is divisible bythree.3. Otherwise, return the light's current status.For example, suppose that LightBoard sim = new LightBoard (7, 5) creates a light boardwith the initial state shown below, where true represents a light that is on and false representsa light that is off. Lights that are off are shaded.lightsSample calls to evaluate light are shown below.ValueCall to evaluateLightExplanationReturnedsim.evaluateLight(0, 3);sim.evaluateLight(6, 0);sim.evaluateLight(4, 1);sim.evaluateLight(5, 4);falsetruefalseThe light is on, and the number of lights that are on in its column is even.The light is off, and the number of lights that are on in its column is divisible by 3.Returns the light's current status.trueReturns the light's current status.01234Class information for this questionpublic class LightBoardprivate boolean[] [] lightspublic LightBoard(int numRows, int numCols)public boolean evaluateLight (int row, int col)Complete the evaluateLight method below.0truetrue falsetruetrue/** Evaluates a light in row index row and column index col and returns a status×as described in part (b).1truefalsefalsetruefalse* Precondition: row and col are valid indexes in lights.public boolean evaluate Light (int row, int col)2 true3truefalsefalsefalse truefalse false45 truetrue false falsetrue falsetruetruefalse truetrue true6 false false false false false The LightBoard class models a two-dimensional display of lights, where each light is either on oroff, as represented by a Boolean value. You will implement a constructor to initialize the display anda method to evaluate a light.public boolean evaluateLight (int row, int col){ /* to be implemented in part (b) */ }public class LightBoard{/** The lights on the board, where true represents on and falserepresents off.// There may be additional instance variables, constructors, and methodsnot shown.*/private boolean ( ) ( ) lights;/** Constructs a LightBoard object having numRows rows and numColscolumns.* Precondition: numRows > 0, numCols > 0/*Postcondition: each light has a 40% probability of being set to on.public LightBoard (int numRows, int numCols)(a)Write the constructor for the LightBoard class, which initializes lights so that each light isset to on with a 40% probability. The notation lights [r] [c] represents the array element at rowI and column c.Complete the LightBoard constructor below./** Constructs a LightBoard object having numRows rows and numColscolumns.Precondition: numRows > 0, numCols > 0* Postcondition: each light has a 40% probability of being set to on.{/* to be implemented in part (a) */ }*//** Evaluates a light in row index row and column index col and returnsa status*as described in part (b).* Precondition: row and col are valid indexes in lights.public LightBoard (int numRows, int numCols)

In this question we have been given with the description for Light Board.Part A:Write a constructor…

b) Write the method evaluateLight, which computes and returns the status of a light at a given row and column based on the following rules. 1. If the light is on, return false if the number of lights in its column that are on is even including the current light. 2. If the light is off, return true if the number of lights in its column that are on is divisible by three. 3. Otherwise, return the light's current status. For example, suppose that LightBoard sin new LightBoard (7, 5) creates a light board with the initial state shown below, where true represents a light that is on and false represents a light that is off. Lights that are off are shaded. lights 0 1 2 3 4 0 true true false true true 1 true false false true false Sample calls to evaluateLight are shown below. Value Call to evaluateLight Explanation Returned sin.evaluateLight(0, 3); sin.evaluatelight(6, 8); sin.evaluateLight(4, 1); sin.evaluateLight(5, 4); false true false The light is on, and the number of lights that are on in its column is even. The light is off, and the number of lights that are on in its column is divisible by Returns the light's current status. true Returns the light's current status. Class information for this question public class LightBoard private boolean[][] lights public LightBoard(int nunRows, int numCols) public boolean evaluateLight(int row, int col) Complete the evaluateLight method below. /**Evaluates a light in row index row and column index col and returns a status ⚫as described in part (b). Precondition: row and col are valid indexes in lights.

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