Longest palindromic substring | Dynamic programming

substring And length (Java String Methods)

substring method in java | substring in Java example | String substring() Method example

L6. Longest Substring With At Most K Distinct Characters | 2 Pointers and Sliding Window Playlist

Longest Palindromic Sub-string (LeetCode 5) | Full solution with examples | Study Algorithms

Java substrings are easy! 📧

Number of Substrings Containing All Three Characters | Dry Runs | Leetcode 1358 | codestorywithMIK

JavaScript Substring Method in 5 Minutes

Longest Sub String Without Repeating Characters | Python Tutorials