Boundary Diagonals of Matrix
This program prints boundary diagonals of a matrix.
Problem Statement
Write a Java program to print boundary diagonals of a 4x4 matrix.
Source Code
| 1 | public class MatrixBoundaryDiagonals { |
| 2 | public static void main(String[] args) { |
| 3 | System.out.println("Eduinq Matrix Boundary Diagonals"); |
| 4 | int[][] A = { |
| 5 | {1,2,3,4}, |
| 6 | {5,6,7,8}, |
| 7 | {9,10,11,12}, |
| 8 | {13,14,15,16} |
| 9 | }; |
| 10 | System.out.print("Main diagonal: "); |
| 11 | for(int i=0;i<4;i++) System.out.print(A[i][i]+" "); |
| 12 | System.out.print("\nSecondary diagonal: "); |
| 13 | for(int i=0;i<4;i++) System.out.print(A[i][4-1-i]+" "); |
| 14 | } |
| 15 | } |
Program Output
Eduinq Matrix Boundary Diagonals Main diagonal: 1 6 11 16 Secondary diagonal: 4 7 10 13
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, demonstrating boundary diagonal extraction on a 4x4 matrix.