Maximum Sum of an Hourglass
You can use a simple approach to find the maximum sum of an hourglass in a given grid by iterating through the elements and considering every possible hourglass shape.
Here’s a Python function to find the maximum sum of an hourglass:


The solution iterates through the grid, considering each element as the topleft corner of an hourglass. It then adds the values of the corresponding hourglass shape and checks if this sum is greater than the maximum sum found so far. If it is, the maximum sum is updated.
The code runs in O(m * n) time, where m and n are the dimensions of the grid, which is efficient for the given constraints.