Find longest unique substring
Problem Description
Given a string s, find the length and one example of the longest substring of s that contains no repeated characters. If multiple such substrings exist with the same maximum length, any valid one may be returned.
Deliverables
- Algorithm Explanation: Clearly describe your chosen algorithm.
- Correctness Proof: Provide a high-level proof of your algorithm's correctness.
- Complexity Analysis: Analyze the time and space complexity of your solution.
- Edge Case Discussion: Discuss how your solution handles various edge cases, including but not limited to:
- An empty string.
- A string where all characters are identical.
- A string containing Unicode code points (characters outside the basic ASCII range).
AI interview prep
Core dilemma
Optimizing the search for a substring with unique characters within a given string, balancing efficient character tracking with minimal redundant computations across varying character sets.
2 tradeoffs and 2 stress tests locked
Interview prep
Unlock the interviewer X-Ray rubric, tradeoff matrix, stress tests, clarifying questions, and key concepts.
Find longest unique substring
Problem Description
Given a string s, find the length and one example of the longest substring of s that contains no repeated characters. If multiple such substrings exist with the same maximum length, any valid one may be returned.
Deliverables
- Algorithm Explanation: Clearly describe your chosen algorithm.
- Correctness Proof: Provide a high-level proof of your algorithm's correctness.
- Complexity Analysis: Analyze the time and space complexity of your solution.
- Edge Case Discussion: Discuss how your solution handles various edge cases, including but not limited to:
- An empty string.
- A string where all characters are identical.
- A string containing Unicode code points (characters outside the basic ASCII range).