A palindrome is a word, number, phrase, or other sequence of symbols that reads the same backwards as forwards. (Wikipedia)
Create an interactive program to test for palindromes. Use either string indices or string slices.
Better yet, allow the user to select if the want to use string indices or string slices.
Design Questions:
Process a text file, book, ... and find all of the unique palindromes in it. Display the count and the palindromes.
List of English palindromic phrases (Wikipedia)