fn main() {
let numbers = [1, 2, 3, 4, 5];
let len = numbers.len();
let first = numbers.first();
let last = numbers.last();
let has_three = numbers.contains(&3);
let has_ten = numbers.contains(&10);
println!("{:?}", numbers);
println!("{:?}", len);
println!("{:?}", first);
println!("{:?}", last);
println!("{:?}", has_three);
println!("{:?}", has_ten);
}