Created
August 12, 2015 08:16
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module Functional_Kats_Kata = | |
type PatternType = | |
| Asterisk | |
| Question | |
| None | |
let findPattern (input:string) (pattern:string) patternType = | |
match patternType with | |
| Asterisk -> | |
let searchString = (pattern.Split [| '*' |]).[0] | |
input.StartsWith searchString // seems a little imperative | |
| Question -> | |
let searchString = (pattern.Split [| '?' |]).[0] | |
input.StartsWith searchString && | |
(input.Length = searchString.Length || input.Length = searchString.Length + 1) | |
| None -> false | |
let searchPattern (inputArray:string list) (pattern: string) = | |
// Good use case for pattern match? Better off using if statement | |
let patternType = | |
match pattern.IndexOf "*", pattern.IndexOf '?' with | |
| -1, -1 -> None | |
| _, -1 -> Asterisk | |
| -1, _ -> Question | |
| _, _ -> None | |
inputArray | |
|> Seq.filter (fun input -> findPattern input pattern patternType) | |
|> Seq.iter (fun i -> printfn "%s" i) | |
let searchInput = [ "crisis"; "criteria"; "crisantemo"; "crisix"; "crisi" ] | |
searchPattern searchInput "crisi?" | |
searchPattern searchInput "crisi" | |
searchPattern searchInput "cri*" |
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