import java.util.*;
import java.util.Collections;
 
class HelloWorld {
	public static void main (String[] args) {
		 ArrayList<Integer> lista = new ArrayList<>();
		 for (int i = 0; i < 50; i++) lista.add(i);
		 seleciona(lista);
		 for (int i = 0; i < 50; i++) System.out.println(lista.get(i));
	}
	public static void seleciona(ArrayList<Integer> arraylist) {
        Collections.shuffle(arraylist);
    }
}
 
//http://pt.stackoverflow.com/q/183808/101

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