LeetCode 304. Range Sum Query 2D - Immutable in F#

URL https://leetcode.com/problems/range-sum-query-2d-immutable/ Code https://github.com/syohex/dotnet-study/blob/master/fsharp/leetcode/problems/0304/main.fsx type NumMatrix = { Acc: int [,] } static member init(matrix: int [,]) : NumMatrix ...