use std::collections::HashMap;

fn main() {
    let attribs = vec!["alpha", "beta", "gamma", "delta"];
    let specials = vec!["beta", "delta"];
    print_attribs(attribs, specials);
}

// expected output: one *two three *four
fn print_attribs(attribs: Vec<&str>, specials: Vec<&str>) {
    let m = get_map();
    let mut output: Vec<String> = Vec::new();
    for item in attribs {
        let v = m.get(item).unwrap();
        let mut w = String::new();
        if specials.contains(&item) {
            w.push('*');
        }
        w.push_str(v);
        output.push(w);
    }
    // do something with 'output'...
    println!("\noutput = {:?} ", output);
}

fn get_map() -> HashMap<String, String> {
    let mut m: HashMap<String, String> = HashMap::new();
    m.insert(String::from("alpha"), String::from("one"));
    m.insert(String::from("epsilon"), String::from("five"));
    m.insert(String::from("beta"), String::from("two"));
    m.insert(String::from("gamma"), String::from("three"));
    m.insert(String::from("delta"), String::from("four"));
    m
}