如何在F＃中按字母顺序排序字符串？

Question

我有string “DBCA”，并希望它在F＃在C＃

let sortedString str = 
    ... 

printfn "%A" <| sortedString "DBCA" // "ABCD" 

代码示例排序

String 
    .Concat(
     _str 
      .OrderBy(ch => ch) 
    ); 

Answer 1

open System 

let sortedString (str : string) = str |> Seq.sort |> String.Concat 

Answer 2

解决方案与LINQ

open System 
open System.Linq 

let orderBy f xs = Enumerable.OrderBy(xs, new Func<_,_>(f)) 

let sortedString (str:string) = 
    str 
    |> List.ofSeq 
    |> orderBy (fun ch -> ch) 
    |> String.Concat 

我有这个方案，但以上回答更好