我想写一个简单的JAVA双色球程序。

公共静态字符串s() {

Random ran = new Random();

string buffer sb = new string buffer();

int I = 0;

while(我& lt6) {

int red = ran . nextint(33)+1;

if(sb . index of(string . value of(red))= =-1){

sb.append(红色+" | ");

i++;

}

}

int blue = ran . nextint(16)+1;

sb.append(蓝色);

return sb . tostring();

}