> For the complete documentation index, see [llms.txt](https://liuzhenglaichn.gitbook.io/algorithm/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://liuzhenglaichn.gitbook.io/algorithm/random.md).

# Random

## Random Integer

```cpp
int randomInt(int mn, int mx) {
    return mn + rand() % (mx - mn);
}
```

## Random Double

```cpp
double randomDouble(double mn, double mx) {
    double d = (double)rand() / RAND_MAX;
    return mn + d * (mx - mn);
}
```

## Problems

* [478. Generate Random Point in a Circle (Medium)](https://leetcode.com/problems/generate-random-point-in-a-circle/)