{ "data": { "question": { "questionId": "187", "questionFrontendId": "187", "boundTopicId": null, "title": "Repeated DNA Sequences", "titleSlug": "repeated-dna-sequences", "content": "

The DNA sequence is composed of a series of nucleotides abbreviated as 'A', 'C', 'G', and 'T'.

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When studying DNA, it is useful to identify repeated sequences within the DNA.

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Given a string s that represents a DNA sequence, return all the 10-letter-long sequences (substrings) that occur more than once in a DNA molecule. You may return the answer in any order.

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Example 1:

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Input: s = \"AAAAACCCCCAAAAACCCCCCAAAAAGGGTTT\"\nOutput: [\"AAAAACCCCC\",\"CCCCCAAAAA\"]\n

Example 2:

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Input: s = \"AAAAAAAAAAAAA\"\nOutput: [\"AAAAAAAAAA\"]\n
\n

 

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Constraints:

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