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🔥Longest Substring Without Repeating CharactersMedium
MediumSliding Window•Acceptance: 34.8%

Longest Substring Without Repeating Characters

Real-World Engineering Context
High-throughput token sliding window parsing in streaming network packets and cryptographic nonces.
Given a string `s`, find the length of the longest substring without duplicate characters.

Sample Test Cases

Input: ["abcabcbb"]
Expected: 3
Input: ["bbbbb"]
Expected: 1
Input: ["pwwkew"]
Expected: 3
Input: [""]
Expected: 0

Constraints

  • 0 <= s.length <= 5 * 10^4
  • s consists of English letters, digits, symbols and spaces.