101 lines
2.9 KiB
JavaScript
101 lines
2.9 KiB
JavaScript
// Returns a random DNA base
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function returnRandBase() {
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const dnaBases = ['A', 'T', 'C', 'G'];
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return dnaBases[Math.floor(Math.random() * 4)];
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}
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// Returns a random single strand of DNA containing 15 bases
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function mockUpStrand() {
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const newStrand = [];
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for (let i = 0; i < 15; i++) {
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newStrand.push(returnRandBase());
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}
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return newStrand;
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}
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// Factory function to create a DNA specimen object
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function pAequorFactory(specimenNumber, dnaArray) {
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if (dnaArray.length !== 15) throw new Error('DNA array must be 15 bases long');
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return {
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_specimenNum: specimenNumber,
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_dna: dnaArray,
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get dna() {
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return this._dna;
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},
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get specimenNum() {
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return this._specimenNum;
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},
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mutate() {
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const dnaBases = ['A', 'T', 'C', 'G'];
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let indexToMutate = Math.floor(Math.random() * this._dna.length);
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const currentBase = this._dna[indexToMutate];
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// Filter out the current base to select a different one
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const otherBases = dnaBases.filter(base => base !== currentBase);
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const newBase = otherBases[Math.floor(Math.random() * otherBases.length)];
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// Update DNA at the selected index
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this._dna[indexToMutate] = newBase;
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return this._dna;
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},
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compareDNA(secondDNA) {
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let DNAsimilarities = 0;
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for (let i = 0; i < this._dna.length; i++) {
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if (this._dna[i] === secondDNA.dna[i]) {
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DNAsimilarities++;
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}
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}
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const commonDNA = DNAsimilarities / this._dna.length * 100; // the *100 is to calculate %age
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return(`The two DNA threads of specimens numbers ${this._specimenNum} and ${secondDNA.specimenNum} are ${commonDNA.toFixed(2)}% similar.`);
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},
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willLikelySurvive() {
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let survivalChances = 0;
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for (let i = 0; i < this._dna.length; i++) {
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if (this._dna[i] === "G" || this._dna[i] === "C") {
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survivalChances++;
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}
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}
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const totalChances = survivalChances / this._dna.length * 100; // the *100 is to calculate %age
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const willSurvive = totalChances >= 60;
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//console.log(`The specimen #${this._specimenNum} has a DNA composed at ${totalChances}% of C and G bases and thus will likely ${willSurvive ? "survive" : "not survive"}.`);
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return willSurvive;
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}
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};
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}
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function pAequorLaboratory(number) {
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let pAequorLab = [];
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let i = 0;
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while (i < number) {
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let pAequor = mockUpStrand();
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let pAequorSpecimen = pAequorFactory(i+1, pAequor);
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if (pAequorSpecimen.willLikelySurvive()) {
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pAequorLab.push(pAequorSpecimen);
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i++;
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}
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}
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return pAequorLab;
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}
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const pAequor1DNA = mockUpStrand();
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const pAequor2DNA = mockUpStrand();
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const pAequor1 = pAequorFactory(1, pAequor1DNA);
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const pAequor2 = pAequorFactory(2, pAequor2DNA);
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console.log(`
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${pAequor1.dna}
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${pAequor2.dna}`);
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console.log(pAequor1.compareDNA(pAequor2));
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pAequor1.willLikelySurvive();
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const pAequorLab1 = pAequorLaboratory(30);
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console.log(pAequorLab1.map(p => p.dna)); |