Discussion on: Daily Challenge #175 - Complementary DNA

[Dimitri Marion]

Javascript using Map:

const dnaMatch = new Map();
dnaMatch.set("A", "T");
dnaMatch.set("T", "A");
dnaMatch.set("C", "G");
dnaMatch.set("G", "C");

const DNA_strand = (dna) => {
    const matchedDNA = Array.prototype.map.call(dna, sym => dnaMatch.get(sym));

    return matchedDNA.join('');
};