如何在Android中生成特定范围内的随机数? [英] How can I generate random number in specific range in Android?

问题描述

我想在特定范围内生成随机数.(例如，范围在 65 到 80 之间)

I want to generate random number in a specific range. (Ex. Range Between 65 to 80)

我按照下面的代码尝试，但不是很充分.它还返回大于最大值的值.值(大于 80).

I try as per below code, but it is not very use full. It also returns the value greater then max. value(greater then 80).

Random r = new Random();
int i1 = (r.nextInt(80) + 65);

如何在一个范围之间生成随机数?

How can I generate random number between a range?

推荐答案

Random r = new Random();
int i1 = r.nextInt(80 - 65) + 65;

这给出了一个介于 65(含)和 80(不含)之间的随机整数，65,66,...,78,79 之一.

This gives a random integer between 65 (inclusive) and 80 (exclusive), one of 65,66,...,78,79.

这篇关于如何在Android中生成特定范围内的随机数?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！