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Solution: Repeated DNA Sequences

Explore how to solve the repeated DNA sequences problem by applying the sliding window technique. Understand how to use a fixed-size window and a hash map to track and return all 10-letter DNA substrings that occur more than once, improving your problem-solving skills with substring and hashing methods.

Statement

A DNA sequence consists of a series of nucleotides, each represented by one of the characters 'A', 'C', 'G', or 'T'.

Given a string s representing a DNA sequence, find and return all 1010-letter-long substrings that appear more than once within s. The result may be returned in any order.

Constraints:

  • 11 \leq s.length 10 ...