Search⌘ K
AI Features

Solution: Find Longest Self-Contained Substring

Explore how to find the longest self-contained substring in a string by leveraging hash maps to track first and last occurrences of characters. This lesson teaches you to implement a window sliding technique that expands and validates substrings efficiently with O(n) complexity, enhancing your problem-solving skills for coding interviews.

Statement

You are given a string, s, consisting of lowercase English letters. Your task is to find the length of the longest self-contained substring of s.

A substring t of s is called self-contained if:

  • t is not equal to the entire string s.

  • Every character in t does not appear anywhere else in s ...