LeetCode 1572. Matrix Diagonal Sum in F#

URL Matrix Diagonal Sum - LeetCode Code https://github.com/syohex/dotnet-study/tree/master/fsharp/leetcode/problems/1572/main.fsx let diagonalSum (mat: int[,]) : int = let rec diagonalSum' i n (mat: int[,]) acc = if i = n then ...