I need help in Java code please. This is the question: Creating a JAVA program that should implement a method that verifies whether a given 4 x 4 square is a Magic Square with a given magicValue. Also, adding code to generate values for a Magic Square based on a magicValue. And below is the code. This code is run but it is just qualified the requirement which is to verify whether a given 4 x 4 square (containing 16 values) is a Magic Square with a given magic value. The other requirement is to generate values for a Magic Square based on a magicValue, when I check the executed magic square, the sum of the numbers in rows and columns is not equal to the magic value import java.util.*; import java.awt.*; public class Magic
I need help in Java code please.
This is the question:
Creating a JAVA program that should implement a method that verifies whether a given 4 x 4 square is a Magic Square with a given magicValue. Also, adding code to generate values for a Magic Square based on a magicValue.
And below is the code. This code is run but it is just qualified the requirement which is to verify whether a given 4 x 4 square (containing 16 values) is a Magic Square with a given magic value. The other requirement is to generate values for a Magic Square based on a magicValue, when I check the executed magic square, the sum of the numbers in rows and columns is not equal to the magic value
import java.util.*;
import java.awt.*;
public class MagicSquare{
static int checkMag(int mat[][],int M)
{
// Function for checking Magic square
int i, j,n=4; int sum=0; // filling matrix with its count value // starting from 1;
for ( i = 0; i < n; i++) {
for ( j = 0; j < n; j++)
sum=sum+mat[i][j];
if(sum!=M)
{
return 0;
}
sum=0;
}
for ( i = 0; i < n; i++) {
for ( j = 0; j < n; j++)
sum=sum+mat[j][i];
if(sum!=M)
{
return 0;
}
sum=0;
}
int sumR=0,
sumL=0;
for ( i = 0; i < n; i++) {
for ( j = 0; j < n; j++) {
if(i==j) sumL=sumL+mat[i][j];
if((i+j)==(n-1))
sumR=sumR+mat[i][j]; } }
if(sumR!=M )
{
return 0;
}
if(sumL!=M)
{
return 0;
}
return 1;
}
static int[][] builtMagic(int mat[][],int M,int Mnew) {
int i,j,n=4;
Mnew=Mnew-M;
int rem=Mnew%4;
int quo =Mnew/4;
if(rem==0){ for ( i = 0; i < n; i++) {
for ( j = 0; j < n; j++)
mat[i][j] =mat[i][j]+quo; }}
else{
for ( i = 0; i < n; i++) {
for ( j = 0; j < n; j++) {
mat[i][j] =mat[i][j]+quo;
if(mat[i][j]==13||mat[i][j]==14||mat[i][j]==15||mat[i][j]==16) {
mat[i][j] =mat[i][j]+rem;
}
}
}
}
return mat;
}
public static void main (String[] args) {
//Scanner object
Scanner sc = new Scanner(System.in);
DrawingPanel panel = new DrawingPanel(500, 500);
Graphics g = panel.getGraphics();
// creating a 2d array of magic square numbers
int numbers[][] = { { 8, 11, 14, 1 }, { 13, 2, 7, 12 }, { 3, 16, 9, 6 }, { 10, 5, 4, 15 } };
// drawing grid of cell width = 80 centered at panel center
drawGrid(g, panel.getWidth() / 2, panel.getHeight() / 2,numbers.length, 80);
// drawing numbers
//drawNumbers(g, panel.getWidth() / 2, panel.getHeight() / 2, 80, numbers);
// drawing title string centered at y=50
drawString(g, "CSC 142 Magic Square", panel.getWidth() / 2, 50);
int n = 4;
int magMat[][]= new int[n][n];
int M;
int baseMat[][]={{12,6,15,1},{13,3,10,8},{2,16,5,11},{7,9,4,14}};
for (int k=0;k<10;k++){
System.out.println("Enter magic value");
M=sc.nextInt();
System.out.println( "Enter " + ( n*n ) + " values" );
for(int i=0;i<n;i++) {
for(int j=0;j<n;j++)
{
magMat[i][j]= sc.nextInt();
}
}
if(checkMag(magMat,M)==1) {
System.out.println("It is a magic square");
panel.clear();
makeMagicSquareGrid(panel,magMat,k+1); // insert magic m=numbers on grid
}
else {
System.out.println("It is not a magic square"); }
System.out.println("Enter another magic value greater than 34");
int Mnew=sc.nextInt();
magMat=builtMagic(magMat,34,Mnew);
panel.clear();
makeMagicSquareGrid(panel,magMat,k+1); // insert magic m=numbers on grid
}
}
static void makeMagicSquareGrid(DrawingPanel dp,int[][] magMat, int k){
Graphics g = dp.getGraphics();
drawGrid(g, dp.getWidth() / 2, dp.getHeight() / 2,magMat.length, 80);
// drawing numbers
drawNumbers(g, dp.getWidth() / 2, dp.getHeight() / 2, 80, magMat);
// drawing title string centered at y=50
drawString(g, "Magic Square "+k, dp.getWidth() / 2, 50);
String filename="MagicMatrix"+k+".jpeg";
try{
dp.save(filename);
}
catch(Exception e)
{
System.out.println("File coudn't be saved");
}
}
public static void drawGrid(Graphics g, int centerX, int centerY, int row, int cell) { // cell width
int x = centerX - (row / 2) * cell;
int y = centerY - (row / 2) * cell;
// setting black color
g.setColor(Color.BLACK);
// looping for each row and column
for (int i = 0; i < row; i++) {
for (int j = 0; j < row; j++) {
// drawing a square with equal sides
g.drawRect(x + (cell * j), y + (cell * i),cell, cell);
}
}
}
// method to draw the numbers (given in a 2d array) inside a grid (assuming
// grid is previously drawn)
public static void drawNumbers(Graphics g, int centerX, int centerY,int cell, int numbers[][]) {
int x = centerX - (numbers.length / 2) * cell;
int y = centerY - (numbers.length / 2) * cell; //Setting red color
g.setColor(Color.RED); // Customizing font
g.setFont(new Font("Georgia", Font.BOLD, 25));
for (int i = 0; i < numbers.length; i++) {
for (int j = 0; j < numbers.length; j++) {
// Setting center cell
int xx = x + (cell * j) + cell / 2;
int yy = y + (cell * i) + cell / 2;
// Setting center text
drawString(g, String.valueOf(numbers[i][j]), xx, yy);
}
}
} public static void drawString(Graphics g, String text, int centerX, int centerY) {
// getting FontMetrics of current font
FontMetrics metrics = g.getFontMetrics(g.getFont());
// finding width of text in pixels using metrics
int width = metrics.stringWidth(text);
// drawing string center aligned
g.drawString(text, centerX - width / 2, centerY + metrics.getHeight()/ 2);
}
}
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