Repeated DNA Sequences
Explore how to detect repeated 10-letter substrings in DNA sequences using the sliding window method. This lesson helps you understand and implement an efficient approach to solve substring repetition problems critical for coding interviews.
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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 s. The result may be returned in any order.
Constraints:
s.lengths[i]is one of'A','C','G', or'T'
Examples
Understand the problem
Now, let’s take a moment to make sure you’ve correctly understood the problem. The quiz below helps you check if you’re solving the correct problem:
Repeated DNA Sequences
Given the input s = "TTTTTTTTT", what is the output of finding all -letter-long substrings that appear more than once?
["TTTTTTTTT"]
["TTTTTTTTTT"]
[]
["TTTTTTTTT", "TTTTTTTTTT"]
Figure it out!
We have a game for you to play. Rearrange the logical building blocks to develop a clearer understanding of how to solve this problem.
Try it yourself
Implement your solution in the following coding playground.
import java.util.*;public class Solution{public List<String> findRepeatedDnaSequences(String s){// Replace this placeholder return statement with your codereturn new ArrayList<>();}}