fn main() {
    let s = "[162, 254, 28, 241]";
    let v: Vec<u8> = s
        .trim_start_matches("[")
        .trim_end_matches("]")
        .split(",")
        .map(|c| c.trim().parse::<u8>().unwrap())
        .collect();

    for n in v {
        println!("{}", n);
    }
}