Boundary Sum of Matrix
This program calculates the sum of boundary elements of a matrix.
Problem Statement
Write a Java program to calculate the sum of boundary elements of a 4x4 matrix.
Source Code
| 1 | public class MatrixBoundarySum { |
| 2 | public static void main(String[] args) { |
| 3 | System.out.println("Eduinq Matrix Boundary Sum"); |
| 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 | int sum=0; |
| 11 | for(int i=0;i<4;i++){ |
| 12 | for(int j=0;j<4;j++){ |
| 13 | if(i==0||i==3||j==0||j==3) sum+=A[i][j]; |
| 14 | } |
| 15 | } |
| 16 | System.out.println("Boundary sum: "+sum); |
| 17 | } |
| 18 | } |
Program Output
Eduinq Matrix Boundary Sum Boundary sum: 102
Explanation
Boundary elements are those in the first/last row or column, and the condition checks these positions while sum accumulates matching values, demonstrating boundary sum calculation.