Diagonal Difference

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    Solution in js

    function diagonalDifference(arr) {
        // Write your code here
        let leftToRight = 0
        let rightToLeft = 0
    for(let i =0;i<arr.length ;i++){
        leftToRight +=arr[i][i]
        rightToLeft += arr[i][arr.length-1-i]
    }
    return  Math.abs(leftToRight-rightToLeft)
    }