wat.rs

fn sort(list: &mut [i32]) -> &mut [i32] {
    list[0] = list[1];
    list
}

fn main() {
    println!("Hello, world!");
    let mut v = vec![1, 2, 3];
    let q = sort(&mut v);
    q[2] = q[1];
    println!("{:?}", q);
}