Implement a function to return the sum of diagonal elements in a square matrix.

Medium

Problem Statement

Sample Input

[[1, 2, 3], [4, 5, 6], [7, 8, 9]]

Sample Output

Limits

Time: 2s · Memory: 256 MB

Code Editor

00:00

import java.util.*; public class Main { public static int diagonalSum() { int[][] matrix = { {1, 2, 3}, {4, 5, 6}, {7, 8, 9} }; // Your code here return 0; } }

Input

[[1, 2, 3], [4, 5, 6], [7, 8, 9]]

Expected Output

Custom Input (stdin)

Program Output

> Run your code to see console output.

Programming Exercises

Implement a function to return the sum of diagonal elements in a square matrix.

Problem Statement

Sample Input

Sample Output

Limits

Hint 1