Here’s my code after adding the 2 optional features. Learned tons. Feel free to comment. I work in vs code mainly and got some help on outputting the array to json file, which I didn’t know was possible. While the json file object works perfect to copy/paste an array object into main.js, the factory methods (unsurprisingly) don’t work unless every object is created using the factory function, so I edited that array of objects–super-easy in vs code. I also discovered that using toFixed to format numbers converts them into strings, which looks great, as long as you don’t want to compare them, but there are solutions to that as well, beginning with Math.round(). All good!
// const fs = require('fs');
const returnRandBase = () => {
const dnaBases = ['A', 'T', 'C', 'G'];
return dnaBases[Math.floor(Math.random() * 4)];
};
const mockUpStrand = () => {
const newStrand = [];
for (let i = 0; i < 15; i++) {
newStrand.push(returnRandBase());
}
return newStrand;
};
const dnaComplements = {
'A': 'T',
'T': 'A',
'C': 'G',
'G': 'C'
};
const pAequorFactory = (specimenNumber, dna15BaseArr) => {
return {
specimenNum: specimenNumber,
dna: dna15BaseArr,
mutate() {
const randPosition = Math.floor(Math.random() * this.dna.length);
this.dna[randPosition] = newRandomBase(this.dna[randPosition]);
return this.dna;
},
compareDNA(specimen2) {
if (this.dna.length !== specimen2.dna.length) return 0;
const matchCount = this.dna.filter((element, index) => element === specimen2.dna[index]).length;
const matchPercent = (matchCount / specimen2.dna.length) * 100;
console.log(`specimen #${this.specimenNum} and specimen #${specimen2.specimenNum} have ${matchPercent.toFixed(0)}% DNA in common`);
return matchPercent;
},
compareDNA(specimen2) {
if (this.dna.length !== specimen2.dna.length) return 0;
const matchCount = this.dna.filter((element, index) => element === specimen2.dna[index]).length;
const matchPercent = (matchCount / specimen2.dna.length) * 100;
console.log(`specimen #${this.specimenNum} and specimen #${specimen2.specimenNum} have ${matchPercent.toFixed(0)}% DNA in common`);
return matchPercent; // Return as a number
},
willLikelySurvive() {
const cgMatchCount = this.dna.filter(element => element === 'G' || element === 'C').length;
const matchPercent = (cgMatchCount / this.dna.length) * 100;
return (matchPercent >= 60);
},
complementStrand() {
return this.dna.map(neucleotide => dnaComplements[neucleotide]);
},
toString() {
return `Specimen #${this.specimenNum}: ${this.dna.join('')}`;
},
};
};
const newRandomBase = excludeBase => {
const bases = ["A", "T", "C", "G"];
const filteredBases = bases.filter(base => base !== excludeBase);
return filteredBases[Math.floor(Math.random() * filteredBases.length)];
};
const closestRelated = pAequorArr => {
let closest = 0;
let compare = 0;
let pair = null;
for (let i = 0; i < pAequorArr.length; i++) {
for (let j = 0; j < pAequorArr.length; j++) {
if (i !== j) { // Skip comparison if i === j
compare = pAequorArr[i].compareDNA(pAequorArr[j]);
if (compare > closest) {
closest = compare;
pair = [pAequorArr[i], pAequorArr[j]];
}
}
}
}
console.log(`The closest related specimens are ${Math.round(closest)}% identical`);
};
// // Create array of 30 pAequor likely to survive
// const createLikely30 = () => {
// const likely30 = [];
// let currentNumber = 1;
// let unlikelyNumber = 1;
// while (likely30.length < 30) {
// const prospect = pAequorFactory(currentNumber, mockUpStrand());
// if (prospect.willLikelySurvive()) {
// likely30.push(prospect);
// currentNumber++;
// } else {
// unlikelyNumber++;
// }
// }
// return likely30;
// };
//
// Create the array
let likelyToSurvive30 = //createLikely30();
// Note: to create the array, I logged the array to likelyToSurvive30.json and copy/pasted
// To file log, I uncommented the first require line and removed type line from package.json
// Then, uncomment next 7 lines, and the array assignment half-line 3 lines above
// Note: I had to reformat as factory objects to get facotry object methods to work
// const oneLineStringify = (obj) => {
// return JSON.stringify(obj).replace(/},/g, '},\n');
// };
// fs.writeFile('likelyToSurvive30.json', oneLineStringify(likelyToSurvive30), (err) => {
// if (err) throw err;
// console.log('The file has been saved!');
// });
[
pAequorFactory(1, ["T","T","G","A","C","A","C","A","G","C","T","G","C","G","C"] ),
pAequorFactory(2, ["T","G","G","A","C","C","C","C","A","G","A","C","A","G","G"] ),
pAequorFactory(3, ["A","C","T","G","G","C","A","G","C","G","A","A","G","G","A"] ),
pAequorFactory(4, ["C","G","C","T","C","G","C","A","C","G","G","G","G","C","T"] ),
pAequorFactory(5, ["C","C","A","T","C","C","A","G","A","G","G","C","G","C","T"] ),
pAequorFactory(6, ["T","G","C","G","G","T","T","A","G","G","G","C","C","T","T"] ),
pAequorFactory(7, ["T","C","C","G","C","C","G","T","C","A","G","C","A","A","A"] ),
pAequorFactory(8, ["A","C","G","C","C","T","C","A","C","G","C","C","A","C","C"] ),
pAequorFactory(9, ["A","T","C","G","G","C","G","G","C","A","C","C","T","T","T"] ),
pAequorFactory(10, ["G","G","A","A","T","C","G","T","G","G","C","T","G","G","A"] ),
pAequorFactory(11, ["C","A","A","C","G","C","A","A","G","G","G","A","A","G","C"] ),
pAequorFactory(12, ["T","C","C","C","G","G","G","A","T","C","G","G","T","T","C"] ),
pAequorFactory(13, ["A","T","G","G","T","A","C","C","G","C","C","G","C","G","A"] ),
pAequorFactory(14, ["T","C","A","C","G","A","A","G","C","G","C","A","G","C","T"] ),
pAequorFactory(15, ["T","A","C","C","C","C","C","G","C","G","T","A","T","T","C"] ),
pAequorFactory(16, ["G","G","G","C","C","A","T","C","C","T","G","C","G","T","G"] ),
pAequorFactory(17, ["G","G","G","A","G","A","A","G","G","T","G","G","T","C","G"] ),
pAequorFactory(18, ["G","C","G","C","G","G","A","C","T","A","T","C","T","G","G"] ),
pAequorFactory(19, ["C","A","A","C","G","T","G","G","C","G","G","G","T","T","A"] ),
pAequorFactory(20, ["C","C","C","G","C","G","T","A","G","C","T","G","A","T","G"] ),
pAequorFactory(21, ["A","G","G","G","C","T","T","C","C","A","A","G","C","C","A"] ),
pAequorFactory(22, ["G","G","G","A","A","T","G","A","G","G","A","G","G","G","T"] ),
pAequorFactory(23, ["C","C","G","A","T","T","C","T","G","G","G","C","G","G","A"] ),
pAequorFactory(24, ["C","T","T","C","T","C","G","C","T","C","T","T","C","G","C"] ),
pAequorFactory(25, ["G","C","T","C","C","C","A","T","G","T","T","C","T","C","C"] ),
pAequorFactory(26, ["C","A","C","G","G","G","T","G","C","T","C","A","T","C","T"] ),
pAequorFactory(27, ["T","T","T","C","G","T","T","T","G","G","C","G","G","G","C"] ),
pAequorFactory(28, ["G","A","G","C","T","T","T","G","C","G","G","G","T","A","C"] ),
pAequorFactory(29, ["A","T","G","A","C","C","C","T","A","C","T","C","C","G","G"] ),
pAequorFactory(30, ["G","C","G","C","C","C","T","A","G","G","C","T","C","A","A"] )
];
const specimen1 = pAequorFactory(1, mockUpStrand());
const specimen2 = pAequorFactory(2, mockUpStrand());
console.log(`pAequous DNA: ${specimen1.dna.join(',')}`);
console.log(`Complement strand: ${specimen1.complementStrand()}`);
// closestRelated(likelyToSurvive30);
// console.log(likelyToSurvive30);
// console.log('Original DNA:', specimen1.dna);
// console.log('Mutated DNA:', specimen1.mutate());
// console.log(specimen1.compareDNA(specimen2));
// console.log(specimen1.willLikelySurvive());
