Print Both Diagonals of Matrix
This program prints both main and secondary diagonals of a matrix.
Problem Statement
Write a Java program to print both diagonals of a 3x3 matrix.
Source Code
| 1 | public class MatrixDiagonals { |
| 2 | public static void main(String[] args) { |
| 3 | System.out.println("Eduinq Matrix Diagonals"); |
| 4 | int[][] A = {{1,2,3},{4,5,6},{7,8,9}}; |
| 5 | System.out.print("Main diagonal: "); |
| 6 | for(int i=0;i<3;i++) System.out.print(A[i][i]+" "); |
| 7 | System.out.print("\nSecondary diagonal: "); |
| 8 | for(int i=0;i<3;i++) System.out.print(A[i][3-1-i]+" "); |
| 9 | } |
| 10 | } |
Program Output
Eduinq Matrix Diagonals Main diagonal: 1 5 9 Secondary diagonal: 3 5 7
Explanation
Main diagonal elements are accessed as A[i][i] and secondary diagonal elements as A[i][n-1-i], and separate loops print both sequences, demonstrating diagonal extraction from a matrix.