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Grokking the Coding Interview Patterns in C++

Find Longest Self-Contained Substring

Explore techniques for finding the longest self-contained substring in a given string by using hash maps. Understand how to identify substrings with unique characters that do not appear elsewhere, and implement efficient solutions to solve this problem.

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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 ...