diagonalDifference
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function diagonalDifference(arr) {
// Write your code here
const size = arr.length;
let sumLeft = 0;
let sumRight = 0;
for(var i = 0; i < size; i++){
const r = (size -1) - i;
sumLeft += arr[i][i];
sumRight += arr[i][r];
}
return Math.abs(sumLeft - sumRight);
}
const a = [ [ 11, 2, 4 ], [ 4, 5, 6 ], [ 10, 8, -12 ] ];
diagonalDifference(a);
JavaScript
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