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// Sha512 in Rust
#[macro_use]
extern crate itertools;
use sha2::{Digest, Sha512};

fn main() {
    let target = Sha512::new().chain(b"help").result();
    let alpha = "abcdefghijklmnopqrstuvwxyz";
    let col = iproduct!(alpha.chars(), alpha.chars(), alpha.chars(), alpha.chars())
        .map(|(a, b, c, d)| format!("{}{}{}{}", a, b, c, d))

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/*
** In java remove() is overloaded
** for Class ArrayList<E>
** we have:
**
** 	public E remove(int index)
**      Removes the element at the specified position in this list. 
**
**	public boolean remove(Object o)
** 		Removes the first occurrence of the specified element from this list

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ch := make(chan WeatherReport)
for _, city := range cities {
			go fetch(city, ch) // fetch call api and put response in ch
}
for range cities {
			rep := <- ch
			reports = append(reports, rep)
}

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let (tx, rx) = mpsc::channel();
for city in cities {
    let tx = tx.clone();
    let city = city.clone();
    thread::spawn(move || {
      let report = api_call(&city, &api_key);
      tx.send(report).unwrap();
    });
}
let mut reports : Vec<ApiResult> = Vec::with_capacity(cities.len());

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((print-weather (sort-reports (pmap weather-api r))))

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def parFetch(cities:List[String]) : Unit = {
  val reports = (cities.par map (city => apiCall(city))).toList
  printReports(reports)
}

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var reports = [ApiResult?]()
for i in 1...cities.count {
   reports.append(nil)
}
let globalQueue = dispatch_get_global_queue(QOS_CLASS_USER_INITIATED, 0)
dispatch_apply(cities.count, globalQueue) {
   i in 
	let index = Int(i)+2 // cities start from 2
	let city = cities[index]
	let rep = callApi(city, apiKey:apiKey)

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(defn gano? [num sec tam]  
  (let [f (famas num sec) t (- (toques num sec) f)]
   (println "tu ingresaste" num) 
   (println "resultado:" t "Toques, " f "Famas\n")
   (= tam f)))

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let comparar num sec = 
  let rec tyf ns xs ys =
      match (ns, xs, ys) with
      | ([], _, _) -> (0,0)
      | (n::ns, x::xs, ys) -> 
          let (t,f) = tyf ns xs ys
          if n = x then (t,f+1) else (if List.exists (fun x -> x = n) ys then (t+1,f) else (t,f))
  tyf num sec sec 

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contar_toques_y_famas(Num,Sec) -> tyf(Num,Sec,Sec).

tyf([],_,_) -> {0,0};
tyf([HNS|TNS],[HXS|TXS],YS) -> 
    {T,F} = tyf(TNS,TXS,YS),
    if HNS =:= HXS -> {T,F+1};
       HNS =/= HXS -> {T+toque(HNS,YS),F}
    end.

toque(X,XS) -> IN = lists:member(X,XS), if IN =:= true -> 1; IN =:= false -> 0 end.