pub fn factorial(n: usize) -> usize {
    let mut p = 1usize;
    for i in 1..(n + 1) {
        p *= i;
    }
    p
}
Factorial

# Type
: `usize -> usize`

# Usage

```
extern crate peroxide;
use peroxide::fuga::*;

assert_eq!(factorial(5), 120);
```
src/statistics/ops.rs