array-methods.js

var dataset = require('./dataset.json');

/*
  create an array with accounts from bankBalances that are
  greater than 100000
  assign the resulting new array to `hundredThousandairs`
*/
var hundredThousandairs = null;

// set sumOfBankBalances to be the sum of all value held at `amount` for each bank object
var sumOfBankBalances = null;

/*
  from each of the following states:
    Wisconsin
    Illinois
    Wyoming
    Ohio
    Georgia
    Delaware
  take each `amount` and calculate 18.9% interest for that `amount` and round to the nearest cent
  and then sum up all the interest calculations into one value and save that to `sumOfInterests`
 */
var sumOfInterests = null;

/*
  aggregate the sum of bankBalance amounts
  grouped by state
  set stateSums to be a hash table where

  the key is:
    the two letter state abbreviation
  and the value is:
    the sum of all amounts from that state
    the value must be rounded to the nearest dollar

  note: During your summation (
    if at any point durig your calculation where the number looks like `2486552.9779399997`
    round this number to the nearest dollar before moving on.
  )
 */
var stateSums = null;

/*
  for all states *NOT* in the following states:
    Wisconsin
    Illinois
    Wyoming
    Ohio
    Georgia
    Delaware
  sum the amount for each state (stateSum)
  take each `stateSum` and calculate 18.9% interest for that state
  sum the interest values that are greater than 50,000 and save it to `sumOfHighInterests`

  note: During your summation (
    if at any point durig your calculation where the number looks like `2486552.9779399997`
    round this number to the nearest dollar before moving on.
  )
 */
var sumOfHighInterests = null;

/*
  set `lowerSumStates` to be an array of two letter state
  abbreviations of each state where the sum of amounts
  in the state is less than 1,000,000
 */
var lowerSumStates = null;

/*
  aggregate the sum of each state into one hash table
  `higherStateSums` should be the sum of all states with totals greater than 1,000,000
 */
var higherStateSums = null;

/*
  from each of the following states:
    Wisconsin
    Illinois
    Wyoming
    Ohio
    Georgia
    Delaware

  Check if all of these states have a sum of account values
  greater than 2,550,000

  if true set `areStatesInHigherStateSum` to `true`
  otherwise set it to `false`
 */
var areStatesInHigherStateSum = null;

/*
  Stretch Goal && Final Boss

  set `anyStatesInHigherStateSum` to be `true` if
  any of these states:
    Wisconsin
    Illinois
    Wyoming
    Ohio
    Georgia
    Delaware
  have a sum of account values greater than 2,550,000
  otherwise set it to be `false`
 */
var anyStatesInHigherStateSum = null;


module.exports = {
  hundredThousandairs : hundredThousandairs,
  sumOfBankBalances : sumOfBankBalances,
  sumOfInterests : sumOfInterests,
  sumOfHighInterests : sumOfHighInterests,
  stateSums : stateSums,
  lowerSumStates : lowerSumStates,
  higherStateSums : higherStateSums,
  areStatesInHigherStateSum : areStatesInHigherStateSum,
  anyStatesInHigherStateSum : anyStatesInHigherStateSum
};