Javascript Project - Mysterious Organism

codecademy-mysterious-organism.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
  }

  //Organism object factory function
  
  const pAequorFactory = (specimenNum, dna) => {
    return {
      specimenNum: specimenNum,
      dna: dna,
      //mutate fn for randomly selecting a base in the object’s dna property and changing the current base to a different base.
      mutate() {
        console.log(dna);
        const index = Math.floor(Math.random() * 15);
        console.log(index);
        const currentBase = dna[index];
        const randomBase = returnRandBase();
        console.log(randomBase);
        if(currentBase !== randomBase){
          dna[index] = randomBase;
        }
        return dna;
      },
      //compare the current pAequor‘s .dna with the passed in pAequor‘s .dna and compute how many bases are identical and in the same locations. 
      compareDNA(otherObj){
        let count = 0;
        for(let i = 0; i < this.dna.length; i++){
          const otherOrg = otherObj.dna[i];     
          const currentOrg = this.dna[i];
          if(currentOrg === otherOrg){
            count++;
          }
        }
        const percDNA = Math.round((count / this.dna.length) * 100);
        return `specimen #1 and specimen #2 have ${percDNA}% DNA in common`;
      },
      //.willLikelySurvive() returns true if the object’s .dna array contains at least 60% 'C' or 'G' bases. Otherwise, .willLikelySurvive() returns false. 
      willLikelySurvive(){
        let count = 0;
        for(let i = 0; i < this.dna.length; i++){
          const base = this.dna[i];
          if(base === 'C' || base === 'G'){
            count++;
          }
        }
        const percDNA = Math.round((count / this.dna.length) * 100);
        if(percDNA >= 60){
          return true;
        }else{
          return false;
        }
      }
    }
  }
  // console.log(pAequorFactory(1, mockUpStrand()));
  // const obj = pAequorFactory(1, mockUpStrand());
  // console.log(obj.mutate());
  
  // const obj1 = pAequorFactory(1, mockUpStrand());
  // const obj2 = pAequorFactory(2, mockUpStrand());
  // console.log(obj1.compareDNA(obj2));
  // console.log(obj1.willLikelySurvive());
  const survivedOrg = [];
  let i = 1;
  while(survivedOrg.length !== 30){
    let obj = pAequorFactory(i, mockUpStrand());
    if(obj.willLikelySurvive()){
      survivedOrg.push(obj);
    }
    i++;
  }
  console.log(survivedOrg);