public static void main(String[] args) {
int count = 0;
int a = 0;
Random r = new Random();
while (true) {
int b = r.nextInt(10000000);
if (a == b) {
break;
} else {
a = b;
}
System.out.println(count++ + ": " + b);
}
System.out.println("相同了");
}Console输出：
8085724: 6260107
8085725: 5648643
8085726: 3241799
8085727: 2604678
8085728: 3444480
相同了
Process finished with exit code 0
得出概率是几百万分之一