# Leetcode 187 - Repeated dna sequences

Note:

• Not the most optimal method as L grows.
• Use sliding window with slice to get new substrs and stroe them in map.

Question:

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 within the DNA.

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.

Example:

Code:
O(n * C)