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;
};

function pAequorFactory(num, array){
  return {
    specimenNum: num,
    dna:array,
    mutate(){
      let randomNum = Math.floor(Math.random() * 15);
      while(1){
        let randomBase = returnRandBase();
        if(this.dna[randomNum] == randomBase){
          continue;
        }else{
          this.dna[randomNum] = randomBase;
          break;
        }
      }
    },
    compareDNA(pAequor){
      let count = 0;
      for(let i = 0; i < pAequor.dna.length; i++){
        if(this.dna[i] == pAequor.dna[i]){
          count++;
        }
      }
      let inCommon = ((count / 15) * 100).toFixed(2) ;
      console.log(`specimen ${this.specimenNum} and specimen ${pAequor.specimenNum} have ${inCommon} DNA in common`)
    },
    willLikelySurvive(){
      let count = 0;
      for(let i = 0; i < this.dna.length; i++){
        if(this.dna[i] == 'C' || this.dna[i] == 'G'){
          count++;
        }
      }
      return (count / 15) >= 0.6 ? true : false;
    },
  }
}

//const a = pAequorFactory(1, mockUpStrand());
//console.log(a);
//a.mutate();
//console.log(a);
//const b = pAequorFactory(2, mockUpStrand());
//console.log(b);
//a.compareDNA(b);
//console.log(b.willLikelySurvive());

let pAequors = [];
let id = 0;
while(pAequors.length != 30){
  let pAequor = pAequorFactory(id, mockUpStrand());
  //console.log(pAequor);
  if(pAequor.willLikelySurvive() == true){
    pAequors.push(pAequor);
  }
  id++;
  //console.log(pAequors);
}
console.log(pAequors.length)