Update Array from a Function - Rust

gistfile1.txt

fn main() {

    let mut arr: [i32; 4] = [1, 2, 3, 4];

    change_value(&mut arr);

    for x in arr {
        print!("{} ", x);
}
}

fn change_value(arr: &mut [i32]) {
    arr[1] = 10;
    arr[2] = 20;
}