//! # Task 4: Smallest Distance Between Consecutive Integers
//! The function f should return the smallest distance of two consecutive integers (in ascending order) in the list.
//! For example, [1, 2, 3] would return 1, and [3, 2, 1, 4] would return 3.
//! f uses an auxiliary function aux.
use crate*;
use *;
use grabapl_defs;
grabapl_defs!;