Palindrome Counting

Count the number of palindromes that exist in a particular string. Duplicates are allowed so long as they cover distinct intervals of the string. Empty strings do not count towards this total.

Example 1:

Input: abab

Output: 6


The following intervals are palindromes(0-indexed), [0,0],[1,1],[2,2],[3,3],[0,2],[1,3]

Try it yourself




Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book.

Contrary to popular belief, Lorem Ipsum is not simply random text.

  >>> a = [1, 2, 3]
  >>> a[-1]

Get premium for instant access to all content and solutions