python-lists.md

Python Lists

The following questions were adapted from Prolog Lists, and mostly re-written to remove any prolog references or examples.

1. Find the last element of a list
2. Find the last but one element of a list.
3. Find the K'th element of a list.
4. Find the number of elements of a list.
5. Reverse a list.
6. Find out whether a list is a palindrome.
   A palindrome can be read forward or backward; e.g. [x,a,m,a,x].
7. Flatten a nested list structure.
   Transform a list, possibly holding lists as elements into a 'flat' list by replacing each list with its elements (recursively).
8. Eliminate consecutive duplicates of list elements.
   If a list contains repeated elements they should be replaced with a single copy of the element. The order of the elements should not be changed.
9. Pack consecutive duplicates of list elements into sublists.
   If a list contains repeated elements they should be placed in separate sublists.
10. Duplicate the elements of a list a given number of times.