我采用的随机数产生算法

long r = (Calendar.getInstance().getTimeInMillis()+new Random().nextInt())%1000;

---------------------------- PROCESS STARTED (2446) for package com.example.inspiret ---------------------------- 20:21:49.856 D 概率:69 20:22:11.877 D 概率:804 20:22:17.758 D 概率:499 20:22:24.109 D 概率:429 20:22:47.173 D 概率:314 20:22:53.651 D 概率:469 20:23:00.353 D 概率:522 20:23:07.040 D 概率:282 20:23:28.505 D 概率:532 20:23:34.236 D 概率:159 20:23:55.669 D 概率:501 20:24:01.678 D 概率:46 20:24:31.064 D 概率:137 20:24:52.027 D 概率:901 20:24:58.014 D 概率:355 20:25:04.626 D 概率:388