stuff.rs

fn last_but_one(list: &Vec<int>) -> int {
    // create a mutable copy of list
    let mut mylist = list;

    // reverse mylist in place
    mylist.reverse();

    // get a reference to the second element and return it
    let second: &int = mylist.get(1);

    // dereference the pointer so I can return an actual int
    *second
}

#[test]
fn test_gets_penultimate_element() {
    let input = vec!(1, 5, 6, 7, 2, 4);

    assert_eq!(last_but_one(&input), 2);
}