FRQ 4

public LightBoard(int numRows, int numCols) {
    lights = new Boolean[numRows][numCols];
    for (int i =0; i < numRows; i++) {

        for (int j =0; j < numCols; j++) {
            if(Math.random() <= 0.4) {
                lights[i][j] = true;
            }
        }
    }
}

|   public LightBoard(int numRows, int numCols) {
'.class' expected

public Boolean evaluateLight(int row, int col) {
    int count = 0;
    if (lights[row][col] == true) {
        for (int i =0; i < lights.length; i++) {
            if (lights[i][col] == true) {
                count++;
            }
        }

        if (count % 2 == 1) {
            return true;
        } else {
            return false;
        }
    } else if (lights[row][col] == false) {
        int count = 0;

        for (int i = 0; i< lights.length; i++) {
            if (lights[i][col] == true) {
                count++;
            }
        }

        if (count % 3 == 0) {
            return true;
        } else {
            return false;
        }
    }
}

import java.lang.Math;

public class LightBoard { 
    private boolean[][] lights; 
    public LightBoard(int numRows, int numCols) {
        
        lights = new boolean[numRows][numCols];

        for (int i =0; i < numRows; i++) {
            for (int j =0; j < numCols; j++) {
                if(Math.random() <= 0.4) {
                    lights[i][j] = true;
                }
            }
        }
    }

    public boolean evaluateLight(int row, int col) {
        if (lights[row][col] == true) {
            int counter = 0;

           for (int i = 0; i < lights.length; i++){
               if (lights[i][col] == true){
                   counter++;
               }
           }

           if (counter % 2 == 0){
               return false;
           }
           else{
               return true;
           }

        }
        else {
            int counter = 0;
            for (int i = 0; i < lights.length; i++){
                if (lights[i][col] == true){
                    counter++;
                }
            }

            if (counter % 3 == 0) {
                return true;
            }
            else {
                return false;
            }
        }
    }
}

LightBoard a = new LightBoard(5,5);
System.out.println(a.evaluateLight(0,0));
System.out.println(a.evaluateLight(0,2));
System.out.println(a.evaluateLight(0,3));

false
false
true