如何隨機的選擇數(shù)據(jù)，我的目標想做隨機點名小程序
package?DailyHomework;
import?java.util.Random;//包含隨機數(shù)需要的類??
public?class?Homework10?{??
????private?static?final?int?ramNum?=?2;
public?static?void?main(String?args[]){
???? String?[]?nameList=?{"張三","李四","王五"};
???? int?rdmNum=(int)(Math.random()*nameList.length);
???? System.out.println(nameList[ramNum]);
?
????}??
??????
}
2018-04-10
public static void main(String args[]){
? ? ? ? String [] nameList= {"張三","李四","王五"};
? ? ? ? Random random=new Random();
? ? ? ? int ramNum=random.nextInt(nameList.length);
? ? ? ? System.out.println(nameList[ramNum]);
}