Bioinformatics with Swift: Ep. 3 — Complementing a Strand of DNA

Are you ready to explore Rosalind’s third bioinformatics coding challenge using Swift?

Ocean Paradise (they/them)
3 min readOct 29, 2023

Welcome to another episode of our journey through Rosalind’s bioinformatics challenges using the Swift programming language. In this second episode (based off of this challenge from Rosalind’s website), we’ll explore the concept of finding the reverse complement of a DNA string. The reverse complement is a fundamental operation in molecular biology, and in this blog post, we’ll tackle the challenge of computing it efficiently with Swift.

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Understanding the Problem

In DNA, certain symbols are complementary to each other: ‘A’ and ‘T’, and ‘C’ and ‘G’. The reverse complement of a DNA string involves two operations: reversing the string and finding the complementary symbols. This process is essential for various biological analyses and manipulations.

Problem Description

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Ocean Paradise (they/them)

amateur computational biologist & software engineer |sentient astrolotl | open-source enthusiast | let's tinker together!