Statement Given a string, s, that represents a DNA sequence, and a number, k, return all the contiguous sequences (substrings) of length k that occur more than once in the string. The order of the returned subsequences does not matter. If no repeated subsequence is found, the function should return an empty set. Note: The DNA sequence is composed of a series of nucleotides abbreviated as A, C, G, and T. For example, ACGAATTCCG is a DNA sequence. When studying DNA, it is useful to identify repeated sequences in it. Constraints: • 1≤s.length ≤ 104 •s[i] is either A, C, G, or T.

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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Given a string, s, that represents a DNA sequence, and a number, k, return all the contiguous sequences
(substrings) of length k that occur more than once in the string. The order of the returned subsequences does
not matter. If no repeated subsequence is found, the function should return an empty set.
Note: The DNA sequence is composed of a series of nucleotides abbreviated as A, C, G, and T. For
example, ACGAATTCCG is a DNA sequence. When studying DNA, it is useful to identify repeated
sequences in it.
Constraints:
• 1 ≤s.length ≤ 104
s[i] is either A, C, G, or T.
●
Transcribed Image Text:Statement Given a string, s, that represents a DNA sequence, and a number, k, return all the contiguous sequences (substrings) of length k that occur more than once in the string. The order of the returned subsequences does not matter. If no repeated subsequence is found, the function should return an empty set. Note: The DNA sequence is composed of a series of nucleotides abbreviated as A, C, G, and T. For example, ACGAATTCCG is a DNA sequence. When studying DNA, it is useful to identify repeated sequences in it. Constraints: • 1 ≤s.length ≤ 104 s[i] is either A, C, G, or T. ●
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