Search⌘ K
AI Features
Home
Courses
Grokking the Coding Interview Patterns

Solution: Repeated DNA Sequences

Explore how to identify all 10-letter-long repeated substrings in a DNA sequence using the sliding window technique. Understand how to implement a hash map to track occurrences and apply a fixed-size window to solve substring repetition problems efficiently with linear time complexity.

We'll cover the following...

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:

  • 1≤1 \leq s.length ≤10 ...