LeetCode 219. Contains Duplicate II in F#

URL https://leetcode.com/problems/contains-duplicate-ii/ Code https://github.com/syohex/dotnet-study/blob/master/fsharp/leetcode/problems/0219/main.fsx let containsNearByDuplicate (nums: int list) (k: int) : bool = let rec containsNearByDuplicate...