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 strand of DNA containing 15 bases
const mockUpStrand = () => {
  const newStrand = []
  for (let i = 0; i < 15; i++) {
    newStrand.push(returnRandBase())
  }
  return newStrand
}

// Factory Functions

let pAequorFactory = (num, dnaBase) => {
  return {
    specimenNum: num,
    dna: dnaBase,
    mutate() {
      let index = Math.floor(Math.random() * this.dna.length);
      let value = returnRandBase();
      do {
        this.dna[index] = value;
      } while (value === this.dna[value]);
    },
    compareDNA(object) {
      let object1 = this.dna;
      let object2 = object.dna;
      let total = 0;
      for (let i=0; i<15; i++) {
        for (let j=0; j<15; j++) {
          if(i === j && object1[i] === object2[j]) {
            total += 6.67;
          }
        }
      }
      return `This object shares a ${total}% dna affinity with ${object}`;
    },
    willLikelySurvive() {
      let gTotal = 0;
      let cTotal = 0;
      let willSurvive;
      for (let i=0; i<15; i++) {
        if (this.dna[i] === 'G') {
          gTotal += 6.67;
        } else if (this.dna[i] === 'C') {
          cTotal += 6.67;
        }
      }
      if (gTotal >= 60 || cTotal >= 60) {
        return true;
      } else {
        return false;
      } 
    },
    complementStrand() {
      let obj1 = [];
      let obj2 = this.dna;
      for (let i=0; i<15; i++) {
        if (obj2[i] === 'A') {
          obj1.push('T');
        } else if (obj2[i] === 'T') {
          obj1.push('A');
        } else if (obj2[i] === 'G') {
          obj1.push('C');
      } else if (obj2[i] === 'C') {
        obj1.push('G');
      }
        return obj1;
    }
  }
}
}

let one = pAequorFactory(1, mockUpStrand());
console.log(one.dna);
console.log(one.complementStrand());

const survivorArr = [];
let idCounter = 1;

while (survivorArr.length < 30) {
  let newOrganism = pAequorFactory(idCounter, mockUpStrand());
  if (newOrganism.willLikelySurvive()) {
    survivorArr.push(newOrganism);
  };
  idCounter ++;
}

// console.log(survivorArr);


// let one = pAequorFactory(1, mockUpStrand());
// console.log(one.dna);
// one.willLikelySurvive();

// let one = pAequorFactory(1, mockUpStrand());
// console.log(one.dna);
// let two = pAequorFactory(2, mockUpStrand());
// console.log(two.dna);
// console.log(one.compareDNA(two));