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Solution: Palindromic Substrings

Explore how to count all palindromic substrings in a given string by applying dynamic programming concepts. Learn to build a lookup table to avoid redundant checks and efficiently handle substrings of varying lengths, improving time complexity to O(n²). This lesson will help you understand the step-by-step process to implement and optimize solutions for palindromic substring problems commonly asked in coding interviews.

Statement

Given a string, s, return the number of palindromic substrings contained in it. A substring is a contiguous sequence of characters in a string. A palindrome is a phrase, word, or sequence that reads the same forward and backward.

Constraints:

  • 11 \leq s.length 1000 ...