fizz.rs

fn fizz(n: i32) -> String {
    match n {
        n if n % 15 == 0 => format!("{}", "FizzBuzz"),
        n if n %  3 == 0 => format!("{}", "Fizz"),
        n if n %  5 == 0 => format!("{}", "Buzz"),
        n                => format!("{}", n),
    }
}

fn fizz2(n: i32) -> String {
    let mut buf = String::new();
    if n % 3 == 0 {
        buf.push_str("Fizz")
    }
    if n % 5 == 0 {
        buf.push_str("Buzz")
    }
    if buf.is_empty() {
        buf.push_str(&n.to_string())
    }
    buf
}

fn main() {
    let end = std::env::args().nth(1).unwrap().parse().unwrap();
    for i in 0..end {
        println!("{:10}|{:10}", fizz(i), fizz2(i))
    }
}