Method shuffle

384-shuffle-an-array.rs:12–21

(&self)

        self.nums.clone()
    }
    fn shuffle(&self) -> Vec<i32> {
        let mut nums = self.nums.clone();
        let mut n = nums.len() as u128;
        while n > 1 {
            let m = SystemTime::now().duration_since(UNIX_EPOCH).unwrap().as_nanos() % n;
            nums.swap(m as usize, n as usize - 1);
            n -= 1;
        }
        nums
    }
}

fn main() {