Search⌘ K
AI Features
Home
Courses
Grokking the Coding Interview Patterns in Python

Solution: Find Longest Self-Contained Substring

Explore how to identify the longest self-contained substring of a string by using hash maps to track first and last occurrences of characters. Understand how to expand and validate substrings to ensure uniqueness and efficiency in solving this problem.

We'll cover the following...

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 ...