LeetCode 2428. Maximum Sum of an Hourglass in F#

URL https://leetcode.com/problems/maximum-sum-of-an-hourglass/ Code https://github.com/syohex/dotnet-study/blob/master/fsharp/leetcode/problems/2428/main.fsx let maxSum (grid: int [,]) : int = let rows = Array2D.length1 grid let cols = Array2...