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hourglassSum.js
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hourglassSum.js
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function hourglassSum(arr) {
const indexes = [];
const rows = arr.length;
const columns = arr[0].length;
if (rows !== columns) {
return;
}
const maxRows = 3;
const maxColumns = 3;
let i = 0;
let j = 0;
const sumofArray = [];
while (i <= maxRows) {
while (j <= maxColumns) {
let sum = 0;
sum =
arr[i][j] +
arr[i][j + 1] +
arr[i][j + 2] +
arr[i + 1][j + 1] +
arr[i + 2][j] +
arr[i + 2][j + 1] +
arr[i + 2][j + 2];
sumofArray.push(sum);
j++;
}
i++;
j = 0;
}
return Math.max(...sumofArray);
}
const arr = [
[-9, -9, -9, 1, 1, 1],
[0, -9, 0, 4, 3, 2],
[-9, -9, -9, 1, 2, 3],
[0, 0, 8, 6, 6, 0],
[0, 0, 0, -2, 0, 0],
[0, 0, 1, 2, 4, 0],
];
hourglassSum(arr);