####Diagnol Difference
Problem Statement
You are given a square matrix of size N×N. Calculate the absolute difference of the sums across the two main diagonals.
Input Format
The first line contains a single integer N. The next N lines contain N integers (each) describing the matrix.
Constraints 1≤N≤100 −100≤A[i]≤100 Output Format
Output a single integer equal to the absolute difference in the sums across the diagonals.
Sample Input
3
11 2 4
4 5 6
10 8 -12
Sample Output
15
Explanation
The first diagonal of the matrix is:
11
5
-12
Sum across the first diagonal = 11+5-12= 4
The second diagonal of the matrix is:
4
5
10
Sum across the second diagonal = 4+5+10 = 19
Difference: |4-19| =15
function processData(input) {
var lines = input.trim().split(/\s+/);
var n = 1 * lines.shift();
var sum = 0;
var a = 0;
var b = n - 1;
while(a < lines.length) {
sum += lines[a] - lines[b];
a += n + 1;
b += n - 1;
}
console.log(Math.abs(sum));
}