LeetCode 1905. Count Sub Islands in F#

URL Count Sub Islands - LeetCode Code https://github.com/syohex/dotnet-study/tree/master/fsharp/leetcode/challenge/202408/count_sub_islands/main.fsx let countSubIslands (grid1: int[,]) (grid2: int[,]) : int = let rows, cols = Array2D.length1 grid...