Created
April 27, 2022 20:17
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type Result = Win | Lose | Draw | |
type TableRow = { Id:string; Wins:int; Draws:int; Losses:int; Points:int } | |
let results = [ | |
"A,B,win" | |
"C,D,lose" | |
"B,D,draw" | |
"C,A,win" | |
"B,C,lose" | |
"D,A,win" | |
] | |
let processData (data:string list) = | |
data | |
|> List.map (fun row -> | |
match row.Split(",") with | |
| [|home; away; result|] -> | |
match result with | |
| "win" -> [(home, Win); (away, Lose)] | |
| "lose" -> [(home, Lose); (away, Win)] | |
| "draw" -> [(home, Draw); (away, Draw)] | |
| x -> failwith $"Unknown result: {x}" | |
| _ -> failwith "Invalid input" | |
) | |
|> List.collect id | |
|> List.groupBy fst | |
|> List.map (fun (team,results) -> | |
results | |
|> List.fold (fun acc res -> | |
match snd res with | |
| Win -> { acc with Wins = acc.Wins + 1; Points = acc.Points + 3 } | |
| Draw -> { acc with Draws = acc.Draws + 1; Points = acc.Points + 1 } | |
| Lose -> { acc with Losses = acc.Losses + 1 } | |
) { Id = team; Wins = 0; Draws = 0; Losses = 0; Points = 0 } | |
) | |
|> List.sortByDescending (fun x -> x.Points) | |
let res = | |
results | |
|> processData | |
|> printfn "%A" |
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