Algorithm · Meta · Medium
Task 1 Given a string s, determine the length of the longest contiguous segment in which every character appears at most once. The segment must preserve the original character order and cannot skip positions. Example 1: Explanation: The longest valid segment is "cbad". Example 2: Explanation: "abcde" is the longest segment; extending it repeats 'c'. Example 3: Explanation: The empty string has a longest valid segment of length 0. Constraints: 0 <= s.length <= 20000 s…
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