Class Amount Class Interview Prompt

classamount-class.js

class CashAmount {
  constructor(amount) {
    this.amount = JSON.stringify(amount);
  }

  totalInPennies() {
    var total = '';
    this.amount.toString().split('').forEach(digit => { if (digit !== '.') { total += digit;} }) 
    return total;
  }

  addDoubleAmount(amount) {
    var total = [];
    var first = this.amount.split('.');
    var second = new CashAmount(amount).amount.split('.');

    for (let i = 0; i < first.length; i++) {
      var sum = (parseInt(first[i], 10) + parseInt(second[i], 10));

      if (i === 1) { total.push('.'); }
      if (i === 1 && sum >= 100) {
        total[0] += 1;
        sum -= 100;
      }
      sum = JSON.stringify(sum)
      if (i === 1 && sum < 10) { total.push('0') }
      total.push(sum);
    }

    return total.join('')
  }

  quantityOfEachDonomination(amount) {
    var dollars = parseInt(amount.toString().split('.')[0]);
    var cents = parseInt(amount.toString().split('.')[1]);

    var denominations = {
      'hundreds': 0,
      'fifties': 0,
      'twenties': 0,
      'tens': 0,
      'fives': 0,
      'ones': 0,
      'quarters': 0,
      'dimes': 0,
      'nickels': 0,
      'pennies': 0
    }

    while (dollars > 0) {
      if (dollars >= 100) {
        dollars -= 100;
        denominations.hundreds ++;
      } else if (dollars >= 50) {
        dollars -= 50;
        denominations.fifties ++;
      } else if (dollars >= 20) {
        dollars -= 20;
        denominations.twenties ++;
      } else if (dollars >= 10) {
        dollars -= 10;
        denominations.tens++;
      } else if (dollars >= 5) {
        dollars -= 5;
        denominations.fives++;
      } else if (dollars >= 1) {
        dollars -= 1;
        denominations.ones++;
      }
    }

    return denominations
  }

  toDouble() {

  }

  toDoubleString() {

  }
}