rendezvous with cassidoo challenge: 23.01.29

generate_arrays.rs

pub fn generate_arrays(n: i32) -> Vec<Vec<i32>> {
    (1..=n).map(|x| (1..=x).collect()).collect()
}

#[test]
fn generate_arrays_test() {
    assert_eq!(
        generate_arrays(4),
        vec![vec![1], vec![1, 2], vec![1, 2, 3], vec![1, 2, 3, 4]]
    );

    assert_eq!(generate_arrays(1), vec![vec![1]]);
}