Readiness Assessment - Ben Cooley

assess.js

//Readiness Assessment - Ben Cooley - Monday, May 1, 2017
var salesTeam = [{name: {first: 'aleen', last: 'atkins'}, age: 26, sales: '$2314'},
    {name: {first: 'alvaro', last: 'angelos'}, age: 55, sales: '$1668'},
    {name: {first: 'denese', last: 'dossett'}, age: 29, sales: '$9248'},
    {name: {first: 'douglas', last: 'denney'}, age: 53, sales: '$5058'},
    {name: {first: 'earline', last: 'erickson'}, age: 19, sales: '$18876'},
    {name: {first: 'herman', last: 'hazell'}, age: 25, sales: '$2746'},
    {name: {first: 'homer', last: 'hirth'}, age: 26, sales: '$474'},
    {name: {first: 'hwa', last: 'heidt'}, age: 53, sales: '$9607'},
    {name: {first: 'hyon', last: 'hampshire'}, age: 46, sales: '$13598'},
    {name: {first: 'issac', last: 'ingerson'}, age: 45, sales: '$5225'},
    {name: {first: 'jeraldine', last: 'joplin'}, age: 39, sales: '$2891'},
    {name: {first: 'jin', last: 'jeffrey'}, age: 17, sales: '$14402'},
    {name: {first: 'joleen', last: 'jolin'}, age: 45, sales: '$15736'},
    {name: {first: 'jude', last: 'jarrett'}, age: 53, sales: '$7557'},
    {name: {first: 'magda', last: 'mireles'}, age: 18, sales: '$1498'},
    {name: {first: 'mistie', last: 'montealegre'}, age: 31, sales: '$6920'},
    {name: {first: 'nancy', last: 'napoli'}, age: 49, sales: '$5255'},
    {name: {first: 'regine', last: 'rohrbaugh'}, age: 33, sales: '$7881'},
    {name: {first: 'rolando', last: 'riebel'}, age: 35, sales: '$8573'},
    {name: {first: 'scarlett', last: 'stagg'}, age: 36, sales: '$7126'},
    {name: {first: 'sherron', last: 'strawn'}, age: 36, sales: '$8848'},
    {name: {first: 'susan', last: 'shilling'}, age: 29, sales: '$8542'},
    {name: {first: 'tama', last: 'tworek'}, age: 16, sales: '$9200'},
    {name: {first: 'tonisha', last: 'taunton'}, age: 41, sales: '$5219'},
    {name: {first: 'vergie', last: 'villescas'}, age: 25, sales: '$8712'}];

// Parts 1 -4forEach, map, filter, reduce
//PART 1 -----------------------------

function capitalize(salesTeam) {
  // input - array
  //forEach
    //item.name.first 
      //first cahr to uppercase
    //item.name.last
      //first cahr to Upper
  salesTeam.forEach(function(item, index){
    salesTeam[index].name.first = salesTeam[index].name.first.substring(0,1).toUpperCase() + salesTeam[index].name.first.substring(1);
    salesTeam[index].name.last = salesTeam[index].name.last.substring(0,1).toUpperCase() + salesTeam[index].name.last.substring(1);
  });
  // output - no
  
}

// Part 2 ---------------


function assert(expectedBehavior, descriptionOfCorrectBehavior) {
  if (!expectedBehavior) {
    console.log(descriptionOfCorrectBehavior);
  } else {
    console.log('test passed');
  }
}

//Edit the below invocation of the below assert function to use JSON.stringify() where necessary to test your capitalize function.
console.log(JSON.stringify(salesTeam[2].name));
capitalize(salesTeam);
assert(JSON.stringify(capitalize(salesTeam[2].name)) === JSON.stringify({first: 'Denese', last: 'Dossett'}), 'should capitalize the first letter of the first and last names');



// Part 3 ---------------

var averageTeamSales = function (salesTeam) {
  //input team array
  var sum = salesTeam.reduce(function(memo, item){
    num = parseInt(item.sales.substring(1));
    return memo + num;
  }, 0)
  return Math.floor((sum/salesTeam.length)+0.99);
  //reduce array
    // parseInt(sales.substring(1))
    // memo += sales
  //reduce / length of input array
  //output = NUMBER - avg sales(rounded)

}

//PART 4 ----------------

var output = averageTeamSales(salesTeam);
var expected = 7487;
assert(output === expected, 'Should accurately average the sales of the team')


//Part 5 ----------
//"Earline Erickson: $18876"

var highestEarner = function (companies) {
  var maxSales = 0;
  var maxIndex = 0;
  var result;

  for (var i =0; i <companies.length; i++) {
    var sales = parseInt(companies[i].sales.substring(1))
    if (sales > maxSales){
      maxSales = sales;
      maxIndex = i;
      result = ''  + companies[i].name.first + ' ' + companies[i].name.last + ': ' + companies[i].sales;
    }
  }
  return result;
    //iterate
      //if index.sales > max sales
        // set maxSales
        //set macindex
        //set result = index. name.first + .name.lst + .sales
// return result
};

output = highestEarner(salesTeam);
expected = "Earline Erickson: $18876";
assert(output === expected, 'Should accurately define the teamMemeber with the highest Sales');


// Part 6 -----------
function filter(collection, predicate) {
  // if predicate = true, then add item to memo
  if (Array.isArray(collection)){
    return collection.reduce(function(memo, item){
      if (predicate(item)){
        memo.push(item);
        return memo;
      }
      return memo;
    }, []);
  }
  return collection.reduce(function(memo, item){
      if (predicate(item)){
        memo[item] = memo[item];
        return memo;
      }
      return memo;
    }, {});

}



// DO NOT ADJUST BELOW FUNCTIONS
function reduce(collection, accumulator, initialValue) {
  each(collection, function(val) {
    if (initialValue !== undefined) {
      initialValue = accumulator(initialValue, val);
    } else {
      initialValue = val;
    }
  })
  return initialValue;
}

function each (collection, callback) {
  if (Array.isArray(collection)) {
    for (let i = 0; i < collection.length; i++) {
      callback(collection[i], i, collection);
    }
  } else {
    for (let key in collection) {
      callback(collection[key], key, collection);
    }
  }
}
//And here is a sample implementation:

var arr = [1, 2, 3, 4];
var obj = {
  a: 1,
  b: 2,
  c: 3,
  d: 4
}

function isEven(val) {
  return val % 2 === 0;
}

function isOdd(val) {
  return !isEven(val);
}

var output1 = filter(arr, isEven);
console.log(output1); // --> [2, 4];

var output2 = filter(obj, isOdd);
console.log(output2); // --> [1, 3];