package net.liugeng.lottery;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.IOException;
import java.util.Random;
public class Main
{
    public static void main(String[] args)
    {
        // 产生几组随机数，要求一组数中不能有重复的数字
        System.out.print("请输入投注注数: ");
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        int nums = 0;
        try
        {
            nums = Integer.parseInt( br.readLine() );
        }
        catch(IOException e)
        {
            System.out.println(e.getMessage());
        }
        int[][] result;
        result = new int[nums][7];
        Random rand = new Random();
        for(int i = 0; i < nums; i ++)
        {            
            for(int j = 0; j < 6; j ++)
            {
                int newNum = rand.nextInt(33) + 1;
                while(true)
                {                    
                    boolean flag = true;                    
                    for(int k = 0; k < j; k ++)
                    {
                        if(newNum == result[i][k])
                        {
                            flag = false;
                        }
                    }
                    if(flag == true)
                    {                        
                        break;
                    }
                    newNum = rand.nextInt(33) + 1;
                }
                result[i][j] = newNum;
                
            }
            result[i][6] = rand.nextInt(16) + 1;
            
        }
        
        for(int i = 0; i < nums; i ++)
        {
            System.out.print("第" + (i+1) + "组: 红色球为: ");
            for(int j = 0; j < 6; j ++)
            {
                System.out.print(result[i][j] + " ");
            }
            System.out.print("蓝色球为: " + result[i][6]);
            System.out.println();
        }
        
        
    }

}

------解决方案--------------------

declare
 type tab is table of integer index by binary_integer;
 v_tab      tab;
 v_num      int;
 v_i        int := 0;
 v_continue boolean := false;
begin
 for i in 1 .. 7 loop
   v_i := v_i + 1;
   v_tab(v_i) := 0;
 end loop;

 v_i := 0;

 loop
   v_num      := round(dbms_random.value(1, 36));
   v_continue := false;
   for i in 1 .. 6 loop
     if v_tab(i) = v_num then
       v_continue := true;
     end if;
   end loop;
    
   if v_continue = false then
     v_i := v_i + 1;
     v_tab(v_i) := v_num;
     if v_i < 7 then
       dbms_output.put_line('red' || v_i || '=' || v_num);
     else
       dbms_output.put_line('blue' || '=' || v_num);
     end if;
   end if;
   exit when v_i = 7;
 end loop;

end;