#[derive(Debug, Clone)]
pub struct Request {
    pub priority: usize,
    pub time: f64,
}

impl Request {
    pub fn new(param: &Vec<f64>) -> Self {

        let priority = thread_rng().gen_range(0, 3);
        let exp = Exp::new(param[priority]);

        Request {
            priority,
            time: thread_rng().sample(exp),
        }
    }
}

pub fn generate_packages(n: usize, priority: &Vec<f64>) -> Vec<Request> {
    let mut result: Vec<Request> = vec![];
    for _ in 0..n {
        result.push(Request::new(priority));
    }
    result
}