Week4-Interview-Problem

Week4-Interview-Problem

class CashAmount {

  constructor(value) {
    this.inputDouble = value;
    this.inputPennies = this.turnDoubleIntoPennies(this.inputDouble);

    this.currentTotalInPennies = this.inputPennies;

    this.turnDoubleIntoPennies = this.turnDoubleIntoPennies.bind(this);
    this.totalInPennies = this.totalInPennies.bind(this);
    this.addDoubleAmount = this.addDoubleAmount.bind(this);
    this.quantityOfEachDenomination = this.quantityOfEachDenomination.bind(this);
    this.toDouble = this.toDouble.bind(this);
    this.toDoubleString = this.toDoubleString.bind(this);
  }

  turnDoubleIntoPennies(double) {
    return double * 100;
  }

  totalInPennies() {
    return this.currentTotalInPennies;
  }

  addDoubleAmount(doubleToAdd) {
    this.currentTotalInPennies += this.turnDoubleIntoPennies(doubleToAdd);
  }

  quantityOfEachDenomination() { // I misunderstood at first what this was supposed to be returning so did it wrong and didn't finish fixing it
    let resultObj = {};

    let startingNum = this.inputPennies;
    let intermediateVal = startingNum;

    let denomsToPenniesMap = {
      'hundreds': 1 * 100 * 100,
      'fifties': 1 * 100 * 50,
      'twenties': 1 * 100 * 20,
      'tens': 1 * 100 * 10,
      'fives': 1 * 100 * 5,
      'ones': 1 * 100,
      'quarters': 1 * 25,
      'dimes': 1 * 10,
      'nickels': 1 * 5,
      'pennies': 1
    }
    let denomNamesArr = Object.keys(denomsToPennies)

    for (let i = 0; i < denomNamesArr.length; i++) {
       resultObj[denomNamesArr[i]] = Math.floor(intermediateVal / denomsToPenniesMap[denomNamesArr[i]]);
       intermediateVal = startingNum % denomsToPenniesMap[denomNamesArr[i]];
    }

    for (let key in denomsToPenniesMap) {
      resultObj[key] = Math.ceil(this.inputPennies / denomsToPenniesMap[key]);
    }
    return resultObj;
  }

  toDouble() {
    return this.currentTotalInPennies / 100;
  }

  toDoubleString() {
    return (this.currentTotalInPennies / 100).toString();
  }

}

// Test Suite // Note my 'denominations' function is not working

const cash = new CashAmount(10.50);
console.log(cash.totalInPennies() === 1050) // Should return TRUE
cash.addDoubleAmount(29.33);
console.log(cash.totalInPennies() === 3983) // Should return TRUE
console.log(cash.toDouble() === 39.83) // Should return TRUE
console.log(cash.toDoubleString() === '39.83') // Should return TRUE

const cash2 = new CashAmount(0.10);
cash2.addDoubleAmount(0.20);
console.log(cash2.totalInPennies() === 30) // Should return TRUE



// // Testing
// const cash = new CashAmount(10.50)
// console.log(cash)
// console.log(cash.totalInPennies()) // 1050
// console.log(cash.addDoubleAmount(29.33));
// console.log(cash.totalInPennies()); // 3983

// const cash3 = new CashAmount(967.93);
// console.log(cash3.quantityOfEachDenomination()) // ->
// // {
// //   'hundreds': 9,
// //   'fifties': 1,
// //   'twenties': 0,
// //   'tens': 1,
// //   'fives': 1,
// //   'ones': 2,
// //   'quarters': 3,
// //   'dimes': 1,
// //   'nickels': 1,
// //   'pennies': 3
// // }

// const cash4 = new CashAmount(10.50);
// cash4.addDoubleAmount(29.33);
// console.log(cash4.toDouble()); // -> 39.83

// const cash5 = new CashAmount(10.50);
// cash5.addDoubleAmount(29.33);
// console.log(cash5.toDoubleString()); // -> '39.83'

// const cash6 = new CashAmount(0.10);
// cash6.addDoubleAmount(0.20);
// console.log(cash6.totalInPennies() === 30) // true