55 lines
1.5 KiB
Java
55 lines
1.5 KiB
Java
import java.util.Scanner;
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class MagicSquareCheck {
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public static void main(String args[]) {
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Scanner sc = new Scanner(System.in);
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System.out.print("Enter the dimension of the square matrix: ");
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int n = sc.nextInt();
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int a[][] = new int[n][n];
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for (int i = 0; i < n; i++) {
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for (int j = 0; j < n; j++) {
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System.out.print(
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"Enter the element at (" + i + "," + j + "): "
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);
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a[i][j] = sc.nextInt();
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}
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}
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// sum of the first row (to have a baseline sum)
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int sum = 0;
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for (int j = 0; j < n; j++) {
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sum += a[0][j];
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}
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// rows, columns, and diagonals
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boolean isMagicSquare = true;
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int diag1 = 0, diag2 = 0;
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for (int i = 0; i < n; i++) {
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int rowSum = 0, colSum = 0;
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diag1 += a[i][i];
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diag2 += a[i][n - 1 - i];
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for (int j = 0; j < n; j++) {
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rowSum += a[i][j];
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colSum += a[j][i];
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}
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if (rowSum != sum || colSum != sum) {
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isMagicSquare = false;
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break;
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}
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}
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if (diag1 != sum || diag2 != sum) {
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isMagicSquare = false;
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}
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if (isMagicSquare) {
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System.out.println("The matrix is a magic square.");
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} else {
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System.out.println("The matrix is not a magic square.");
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}
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}
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}
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