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 = (specimen, dna) =>{
  return {
    specimen: specimen,
    dna: dna,
    mutate(){
    
   const mutBase = Math.floor(Math.random()*dna.length);
  
  
    let changeBase = returnRandBase();

    
while(changeBase === dna[mutBase]){
  console.log("Same base");
  changeBase = returnRandBase();
      };
   
     this.dna[mutBase] = changeBase;
      console.log(`Mutated strand: ${this.dna}`)

  return this.dna ;
    },

    compareDNA(pAequorObj){
let count = 0;
//console.log(this.dna.length);
for(let i=0; i< this.dna.length; i++){
    if(this.dna[i] === pAequorObj.dna[i]){
      count+=1; 
 };
};
let result = ((count/this.dna.length)*100).toFixed(1);

 return `Specimen ${this.specimen} and specimen ${pAequorObj.specimen} have ${result}% of their DNA in common.`;

    },
willLikelySurvive(){
  let counter = 0;
  let countBase;

  for(let k=0; k<this.dna.length; k++){
    if(this.dna[k] === 'C' || this.dna[k]=== 'G'){
      counter+=1;
      //console.log(`This DNA has ${counter} bases of G and C.`)
    };
    countBase = ((counter/15)*100).toFixed(1);
    
  };
  console.log(`This DNA is made up of ${countBase}% of C and G bases.`);
 
  if(countBase >= 60){
      return true;
      }else{
        return false;
        };
},

  };
};
let test = pAequorFactory(1, mockUpStrand());
let test2 = pAequorFactory(2, mockUpStrand());
console.log(test.dna);
let testMutate = test.mutate();
console.log(testMutate);

console.log(test.compareDNA(test2));
console.log(test.willLikelySurvive());

let store = [];
let m = 0;
  while(store.length < 30){
    let instance = pAequorFactory(m, mockUpStrand());
    if(instance.willLikelySurvive() === true ){
      store.push(instance.dna);
      m++;
      };
      console.log(store);
  };