fn remove_first_and_last_character(s: &str) -> &str {
let mut chars = s.chars();
chars.next();
chars.next_back();
chars.as_str()
}
fn main() {
let mut s : String = "rust programming".to_string();
s = remove_first_and_last_character(&s).to_string();
println!("{}", s);
}
/*
run:
ust programmin
*/