Longest Unique Substring

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Anannya is given a string $S$, and she has to find the longest substring without any characters repeating, unlike her own name. \ Please help her in solving this question :( ### Input - The first line of input will contain a single integer $T$, denoting the number of test cases. - Each test case consists of a string. ### Output For each test case, output on a new line the longest substring with

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solution.cppC++17

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