生成1到10个Java之间的随机数 [英] Generating a Random Number between 1 and 10 Java

问题描述

我想在Java中生成1到10之间的数字。

I want to generate a number between 1 and 10 in Java.

这是我尝试过的：

Random rn = new Random();
int answer = rn.nextInt(10) + 1;

有没有办法告诉括号中的内容（）调用nextInt方法时要添加什么？

Is there a way to tell what to put in the parenthesis () when calling the nextInt method and what to add?

推荐答案

as 文档说，此方法调用返回伪随机，均匀分布的int值介于0（包括）和指定值（不包括）之间。这意味着在您的情况下，您将获得0到9之间的数字。所以你已经通过在该数字上加一个来正确地完成了所有事情。

As the documentation says, this method call returns "a pseudorandom, uniformly distributed int value between 0 (inclusive) and the specified value (exclusive)". This means that you will get numbers from 0 to 9 in your case. So you've done everything correctly by adding one to that number.

一般来说，如果你需要从 min 到 max （包括两者），你写的

Generally speaking, if you need to generate numbers from min to max (including both), you write

random.nextInt(max - min + 1) + min

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