我需要帮助宽度随机代码[重复]

Question

我需要帮助调整Random r = new Random(); 代码的宽度。

我会给你我的代码并告诉你我想做什么。

Random r = new Random();
int i = r.nextInt(3);
System.out.println(i);

//now how do i make it not to take 0 as a random number
//One of them is 0, how do i make it take a random int that is
//bigger than 0 but lower than 3. I need help there.

Answer 1

好吧，考虑一下。你目前得到 0、1 或 2。那么你怎么能只得到 1 或 2？将2 传递给nextInt，得到0 或1，并将1 添加到结果中：

int i = r.nextInt(2) + 1;