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,
    dna,
    mutate(){
      let i=Math.floor(Math.random()*15);
      switch(this.dna[i]){
        case 'A':{
          this.dna[i]=['T','C','G'][Math.floor(Math.random()*3)];
        }break;
        case 'T':{
          this.dna[i]=['A','C','G'][Math.floor(Math.random()*3)];
        }break;
        case 'C':{
          this.dna[i]=['A','T','G'][Math.floor(Math.random()*3)];
        }break;
        case 'G':{
          this.dna[i]=['A','T','C'][Math.floor(Math.random()*2)];
        }break;
      }
      console.log(i);
      return this.dna;
    },
    compareDNA(object){
      let count=0;
      for(i=0;i<this.dna.length;i++){
        if(this.dna[i]===object.dna[i]){
          count++;
        }
      }
      commonPercentage=(count/this.dna.length)*100;
      return commonPercentage.toFixed(2);
      //console.log(`The specimen${this.specimenNum} and specimen${object.specimenNum} have ${commonPercentage.toFixed(2)}% of DNA in common`);
    },
    willLikelySurvive(){
      let count=0;
      for(i=0;i<this.dna.length;i++){
        if(this.dna[i]==='C'||this.dna[i]==='G'){
          count++;
        }
      }
      survivePercentage=(count/this.dna.length)*100;
      if(survivePercentage>=60){
        return true;
      }
      else{
        return false;
      }
    },
    complementStrand(){
      complementDNA=[];
      for(i=0;i<this.dna.length;i++){
        switch(this.dna[i]){
          case 'A':{
            complementDNA.push('T');
          }break;
          case 'T':{
            complementDNA.push('A');
          }break;
          case 'C':{
            complementDNA.push('G');
          }break;
          case 'G':{
            complementDNA.push('C');
          }break;
        }
      }
      return complementDNA;
    }
  }
}
const survivingSpecimen=[];
let idCounter=1;
while(survivingSpecimen.length<30){
  let newOrg=pAequorFactory(idCounter,mockUpStrand())
  if(newOrg.willLikelySurvive()){
    survivingSpecimen.push(newOrg);
  }
  idCounter++;
}

let highestPercentage = 0;
let currentPercentage=0;
let mostRelatedSpecimen1={};
let mostRelatedSpecimen2={};
for(let i of survivingSpecimen){
  for(let j of survivingSpecimen){
    if(j!==i){
      currentPercentage=j.compareDNA(i);
      if(currentPercentage>highestPercentage){
        highestPercentage=currentPercentage;
        mostRelatedSpecimen1=i;
        mostRelatedSpecimen2=j;
      }
    }
  }
}
console.log(mostRelatedSpecimen1.specimenNum+'\n'+mostRelatedSpecimen2.specimenNum+' '+highestPercentage);