LeetCode 1207. Unique Number of Occurrences in F#

URL https://leetcode.com/problems/unique-number-of-occurrences/ Code https://github.com/syohex/dotnet-study/blob/master/fsharp/leetcode/problems/1207/main.fsx let uniqueOccurences (arr: int list) : bool = arr |> List.fold (fun acc n -...