Javascript Program to Find difference between sums of two diagonals

// Javascript Code for Find difference between sums
// of two diagonals

function difference(arr, n) {
    // Initialize sums of diagonals
    let d1 = 0, d2 = 0;

    for (let i = 0; i < n; i++) {
        for (let j = 0; j < n; j++) {
            // finding sum of primary diagonal
            if (i == j)
                d1 += arr[i][j];

            // finding sum of secondary diagonal
            if (i == n - j - 1)
                d2 += arr[i][j];
        }
    }

    // Absolute difference of the sums
    // across the diagonals
    return Math.abs(d1 - d2);
}

/* Driver program to test above function */

let n = 3;

let arr =
    [
        [11, 2, 4],
        [4, 5, 6],
        [10, 8, -12]
    ];

console.log(difference(arr, n));

// This code is contributed Bobby

// JAVA SCRIPT  Code for Find difference between sums
// of two diagonals

function difference(arr, n) {

    // Initialize sums of diagonals
    let d1 = 0, d2 = 0;

    for (let i = 0; i < n; i++) {
        d1 += arr[i][i];
        d2 += arr[i][n - i - 1];
    }

    // Absolute difference of the sums
    // across the diagonals
    return Math.abs(d1 - d2);
}

/* Driver program to test above function */

let n = 3;
let arr = [[11, 2, 4],
[4, 5, 6],
[10, 8, -12]];

console.log(difference(arr, n));
// This code is contributed by sravan kumar Gottumukkala