DSA Practice
Description
Longest Substring Without Repeating Characters
Given a string `s`, find the length of the longest substring without repeating characters. Example: Input: `s = "abcabcbb"` Output: `3` (The answer is "abc", with the length of 3).
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Requirements
Time complexity: O(n).
Space complexity: O(min(m, n)), where m is size of alphabet.
Use a Sliding Window approach.
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Test Execution
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