Based on Sort pseudo-array v2 by apozdnyakov
- fixed issue where if the same number is repeated in the list it gets skipped
- replaced hardcoded 10000 and -10000 values with na in case those values are in the list
- added sort_all to demonstrate how to sort a list if the length is fixed
- replaced hardcoded 10000 and -10000 values with na in case those values are in the list
- added sort_all to demonstrate how to sort a list if the length is fixed