로또 번호 추첨(random을 이용)

import java.util.HashSet;

import java.util.Random;

 

 

public classRandomEx02 {

 

             /**

              * @param args

              */

             public static voidmain(String[] args) {

                           // TODOAuto-generated method stub

                          

                           Randomr = newRandom();

                          

                           for(int i =0; i<6; i++){            

            

                                        HashSet<String>set = new HashSet<String>();

                                        while(true){

                                                     set.add(String.valueOf(r.nextInt(45)+1));

                                                     if(set.size()==6){

                                                                  break;

                                                     }

                                        }

                                                     System.out.print(set.toString());

                                                     System.out.print("\t");

                                       

                                        System.out.println();

                           }

             }

}