hourglass javascript code example
Example: hourglasses js
function calculate_sum(arr) {
var sum = [];
for(x=0; x<4; x++) {
for(j=0; j<4; j++) {
sum.push(arr[x][j] + arr[x][j+1] + arr[x][j+2] + arr[x+1][j+1] + arr[x+2][j] + arr[x+2][j+1] + arr[x+2][j+2]);
};
};
return Math.max.apply(null, sum);
}