Sort array by absolute value

#[test]
fn test_all_negative() {
    let start = std::time::Instant::now();
    let val = Solution::sort_by_absolute_value(vec![-5, -3, -1, -4, -2]);
    let ok = check_sorted_by_abs(&val);
    log_result!(ok, "test_all_negative", start, "sorted by abs", val);
    assert!(ok);
}

#[test]
fn test_all_positive() {
    let start = std::time::Instant::now();
    let val = Solution::sort_by_absolute_value(vec![5, 3, 1, 4, 2]);
    let expected = vec![1, 2, 3, 4, 5];
    log_result!(val == expected, "test_all_positive", start, expected, val);
    assert_eq!(val, expected);
}

#[test]
fn test_example1() {
    let start = std::time::Instant::now();
    let val = Solution::sort_by_absolute_value(vec![3, -1, -4, 1, 5]);
    let ok = check_sorted_by_abs(&val);
    log_result!(ok, "test_example1", start, "sorted by abs", val);
    assert!(ok);
}

#[test]
fn test_example2() {
    let start = std::time::Instant::now();
    let val = Solution::sort_by_absolute_value(vec![-100, 100]);
    let ok = check_sorted_by_abs(&val);
    log_result!(ok, "test_example2", start, "sorted by abs", val);
    assert!(ok);
}

#[test]
fn test_single() {
    let start = std::time::Instant::now();
    let val = Solution::sort_by_absolute_value(vec![42]);
    let expected = vec![42];
    log_result!(val == expected, "test_single", start, expected, val);
    assert_eq!(val, expected);
}

#[test]
fn test_zeros() {
    let start = std::time::Instant::now();
    let val = Solution::sort_by_absolute_value(vec![0, -1, 0, 2]);
    let ok = check_sorted_by_abs(&val);
    log_result!(ok, "test_zeros", start, "sorted by abs", val);
    assert!(ok);
}