{ "data": { "question": { "questionId": "3", "questionFrontendId": "3", "boundTopicId": null, "title": "Longest Substring Without Repeating Characters", "titleSlug": "longest-substring-without-repeating-characters", "content": "

Given a string s, find the length of the longest substring without repeating characters.

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Example 1:

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\nInput: s = "abcabcbb"\nOutput: 3\nExplanation: The answer is "abc", with the length of 3.\n
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Example 2:

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\nInput: s = "bbbbb"\nOutput: 1\nExplanation: The answer is "b", with the length of 1.\n
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Example 3:

\n\n
\nInput: s = "pwwkew"\nOutput: 3\nExplanation: The answer is "wke", with the length of 3.\nNotice that the answer must be a substring, "pwke" is a subsequence and not a substring.\n
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Constraints:

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