Solution: Find Longest Self-Contained Substring
Explore how to identify the longest self-contained substring by using hash maps to track first and last character occurrences. Understand how to expand and validate substring windows while maintaining uniqueness constraints, all with linear time complexity and constant space usage.
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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:
tis not equal to the entire strings.Every character in
tdoes not appear anywhere else ins...