FizzBuzz.rs

fn main() {
    for n in 1..=100 {
        println!("{}", get_fizz_buzz(n))
    }
}

trait MultiplePush {
    fn push_strs(&mut self, strs: &[&str]);
}

impl MultiplePush for String {
    fn push_strs(&mut self, strs: &[&str]) {
        for str_ in strs {
            self.push_str(str_);
        }
    }
}

fn get_fizz_buzz(n: i32) -> String {
    let mut result = String::with_capacity(64);
    
    result.push_strs(&[
        if n % 3 == 0 { "Fizz" } else { "" },
        if n % 5 == 0 { "Buzz" } else { "" },
    ]);
    
    if result.len() == 0 {
        result = n.to_string()
    }

    result
}