package zuochulai;

import java.util.ArrayList;
import java.util.Collections;
import java.util.LinkedHashSet;
import java.util.List;

public class caipiao {

    public static void main(String[] args) {
    List<Integer> list=new ArrayList<Integer>();
for(int i=0;i<22;i++){
    Collections.addAll(list, i);
}
    Collections.shuffle(list);
for(int i=0;i<5;i++){
    System.out.print(list.get(i)+"   ");
}
    

    
    }

}