Add list rotation one-liner

@@ -252,3 +252,9 @@ bytes.fromhex(hex_string)

res = int("".join(map(str, items)))

```

**Example:** `[1, 2, 3] → 123`

## Rotate a list by N positions

```python

rotated = items[n:] + items[:n]

```

**Example:** `items=[1,2,3,4,5], n=2 → [3,4,5,1,2]`