packagecom.wangbo.choujiang;importjava.util.ArrayList;importjava.util.List;importjava.util.Random;/*** 大转盘抽奖
*@authorwangbo
* @date -05-22 14:54:47*/
public classTest1 {public static voidmain(String[] args) {
List awardList = new ArrayList();
Award award1= newAward();
award1.setAwardName("手机");//10%
award1.setProbability(0.1);
awardList.add(award1);
Award award2= newAward();
award2.setAwardName("水杯");//20%
award2.setProbability(0.2+0.1);//概率加上上一个奖品的概率(累加)
awardList.add(award2);
Award award4= newAward();
award4.setAwardName("鼠标");//10%
award4.setProbability(0.1+0.2+0.1);
awardList.add(award4);
Award award5= newAward();
award5.setAwardName("谢谢惠顾");//60%
award5.setProbability(1d);//最后一个肯定是1
awardList.add(award5);
Random random= newRandom();int a = 0,b = 0,c = 0,d = 0;for (int i = 0; i < 10000; i++) {
Double userSelect= random.nextDouble();//0.0-1.0的double随机数(不包括1.0)
String awardName =duageAward(userSelect, awardList);//信息统计
if ("手机".equals(awardName)) {
a++;
}else if ("水杯".equals(awardName)) {
b++;
}else if ("鼠标".equals(awardName)) {
c++;
}else if ("谢谢惠顾".equals(awardName)){
d++;
}
}
System.out.println("手机 " + a + " 次");
System.out.println("水杯 " + b + " 次");
System.out.println("鼠标 " + c + " 次");
System.out.println("谢谢惠顾 " + d + " 次");
}/*** 选奖品
*@paramuserSelect
*@paramawardList
*@return
*/
public static String duageAward(Double userSelect, ListawardList){for(Award award : awardList) {if(userSelect
}
}return null;
}
}classAward{privateString awardName;privateDouble probability;publicString getAwardName() {returnawardName;
}publicDouble getProbability() {returnprobability;
}public voidsetAwardName(String awardName) {this.awardName =awardName;
}public voidsetProbability(Double probability) {this.probability =probability;
}
}
