Problem from Hackerrank.
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function diagonalDifference(arr) { // Write your code here let arrayLength = arr.length; let diag1 = 0; let diag2 = 0; for( let i = 0; i < arrayLength; i++) { for ( let j = 0; j < arrayLength; j++) { //main diagonal if ( i === j ) { diag1 += arr[i][j]; }; //second diagonal if ( i + j === arrayLength - 1 ) { diag2 += arr[i][j]; }; }; }; return Math.abs(diag1 - diag2); } |