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  1. Practice
  2. Data Structures
  3. Arrays
  4. 2D Array - DS
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2D Array - DS

  • JBallin + 2 comments

    Similar JavaScript solution:

    function hourglassSum(arr) {
    let max = -63;

    for (let i = 0; i < 4; i++) {
        for (let j = 0; j < 4; j++) {
            let sum = arr[i + 1][j + 1];
            for (let k = 0; k < 3; k++) {
                sum += arr[i][j + k];
                sum += arr[i + 2][j + k]
            }
            if (sum > max) max = sum;
        }
    }

    return max;
}
    • rajasekarbtech + 1 comment

      Hi, why are you setting max value as -63?? why dont set first value a max and compare consequetive sum's??

      • JBallin + 0 comments

        (-9 * 7) -63 is the lowest possible value. You could set the max to the first value or even undefined if you wanted (style choice).

    • antonio_pierro + 0 comments

      In Javascript you can set tha max value to -Infinity