Codecademy export

main.js

// Returns a random DNA base
const returnRandBase = () => {
  const dnaBases = ['A', 'T', 'C', 'G'];
  return dnaBases[Math.floor(Math.random() * 4)];
};

// Returns a random single stand of DNA containing 15 bases
const mockUpStrand = () => {
  const newStrand = [];
  for (let i = 0; i < 15; i++) {
    newStrand.push(returnRandBase());
  }
  return newStrand;
};

const pAequorFactory = (specimenNum, dna) => {
  return {
    specimenNum: specimenNum,
    dna: dna,

    //The mutate function below changes one base of the dna sequence of the pAequorFactory object
    mutate() {
      let randomSelector = Math.floor(Math.random() * 15);
      let randomBase;

      do {
        randomBase = returnRandBase();
      } while(randomBase === this.dna[randomSelector]);

      this.dna[randomSelector] = randomBase;
      return this.dna;
    },
    
    compareDNA(pForeign) {
      let matchCount = 0;
      let matchPercent = 0;
      for (let i = 0; i < this.dna.length; i++) {
        if (pForeign.dna[i] === this.dna[i]) {
          matchCount++;
        }
      }
      matchPercent = ((matchCount/15)*100).toFixed(1);
      console.log(matchCount);
      console.log(matchPercent);
      console.log(`Specimen: ${this.specimenNum} and Specimen: ${pForeign.specimenNum} have ${matchPercent} DNA in common`);
    },

    willLikelySurvive() {
      let cBaseCnt = 0;
      let gBaseCnt = 0;
      for (let i = 0; i < this.dna.length; i++) {
        switch(this.dna[i]) {
          case 'C':
            cBaseCnt++;
            break;
          case 'G':
            gBaseCnt++;
            break;
          default:
            break;
        } 
      }
      let cBasePercent = ((cBaseCnt/15)*100);
      let gBasePercent = ((cBaseCnt/15)*100);

      if (cBasePercent >= 60) {
        return true;
      }
      if (gBasePercent >= 60) {
        return true;
      }
      return false;
    }
  };
};

const pAequor = [];
for (let i = 0; i < 30; i++) {
  pAequor[i] = pAequorFactory(i, mockUpStrand());
}

const pAequorlivable = [];
for (let j = 0; j < pAequor.length; j++){
  if(pAequor[j].willLikelySurvive() === true) {
    pAequorlivable.push(pAequor[j]);
  }
}

if (pAequorlivable.length >= 1) {
  console.log(pAequorlivable);
}
else {
  console.log('None of the pAequors in the batch of specimens will survive');
}



/*test for the pAequorFactory function below:
console.log('test for the pAequorFactory function below:');
const pAequor1 = pAequorFactory(1, mockUpStrand());
console.log(pAequor1);
*/

/*tests for the mutate function
console.log('tests for the mutate function:');
pAequor1.mutate();
console.log(pAequor1);
*/

/*Tests for the compareDNA method are below:
console.log('Tests for the compareDNA method are below:');
const pAequor2 = pAequorFactory(2, mockUpStrand());
console.log(`pAequor1 dna strand is: ${pAequor1.dna}`);
console.log(`pAequor2 dna strand is: ${pAequor2.dna}`);
pAequor2.compareDNA(pAequor1);
*/

/*Tests for the willLikelySurvive method is below:
console.log('Tests for the .willLikelySurvive method is below:')
console.log(pAequor1.willLikelySurvive());
console.log(pAequor2.willLikelySurvive());
*/