Longest Substring Without Repeating Characters

Oct 24, 2025 · 3 min read · Given a string s, find the length of the longest substring without duplicate characters. example 1 Input: s = "abcabcbb" Output: 3 Explanation: The answer is "abc", with the length of 3. Note that "bca" and "cab" are also correct answers. Brute Forc...