QiuBika_061的博客

import java.util.List;import java.util.Map;import java.util.Random;public class DrawUtil { //0奖励id 1vip 2最大可抽取数,3概率 private int[][] jackpot; private Map<Integer,Integer> userAw...

public static boolean isEmpty(Object obj) { if (obj == null) { return true; } if (obj instanceof String) { return ((String) obj) == null || "".equa...

public static int getRandom( int min,int max) { max++; return (int) (min + Math.random() * (max - min)); }