Exception in thread "main" java.lang.IllegalArgumentException: bound must be positive at java.base/java.util.Random.nextInt(Random.java:388)错误原因
nextInt 的构造方法不能传入小于1的值

Exception in thread "main" java.lang.IllegalArgumentException: bound must be positive at java.base/java.util.Random.nextInt(Random.java:388)错误原因
nextInt 的构造方法不能传入小于1的值