package algus;

import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;
import java.util.stream.Stream;

public class VooValjund {

	public static void main(String[] args) {
		String[] m1=Stream.of("Juku", "Kati", "Mati").toArray(String[]::new);
        System.out.println(String.join(",", m1));
        System.out.println(Stream.of("Juku", "Kati", "Mati").
        		  collect(Collectors.joining("-")).toString());
        
        //Tutvuge Collectors.partitioningBy(predicate) funktsiooniga
        //Lugege selle abil kokku, mitu eesnime on millise pikkusega
        //Avastus - partititioningBy vőimaldab jagada ainult kahte gruppi
        Map<Integer, List<String>> nimed=
         Stream.of("Juku", "Kati", "Mati", "Anu", "Ain", "Madis").
            collect(Collectors.groupingBy(s -> s.length()));
        System.out.println(nimed);
        for(Integer pikkus: nimed.keySet()){
        	System.out.println(pikkus+" - "+nimed.get(pikkus).size());
        }
        Stream.of("Juku", "Kati", "Mati", "Anu", "Ain", "Madis").
        collect(Collectors.groupingBy(s -> s.length())).entrySet().stream().
          sorted((k1, k2) -> k2.getKey()-k1.getKey()).
          forEachOrdered(k -> System.out.println(k.getKey()+" "+k.getValue().size()));
	}

}