kenlyhuiHRSF8assessment.js

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'}];

// Let's start with pretty-ing up our data a little bit. Looks like we forgot to capitalize the first and last names of our employees when we entered them into our system.

// Write a function capitalize that takes in the salesTeam array and modifies it so that the first letter of the first and last names are capitalized.

// Note: this function does not have a return value, it only modifies the passed it argument.

function capitalize(salesTeam){
  return salesTeam.map(makeit);
}

function makeit(obj){
  obj.name.first = obj.name.first.substring(0,1).toUpperCase() + obj.name.first.substring(1);
  obj.name.last = obj.name.last.substring(0,1).toUpperCase() + obj.name.last.substring(1);
  return obj;
}

console.log(capitalize(salesTeam));


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.

capitalize(salesTeam);
assert(JSON.stringify(salesTeam[2].name) === JSON.stringify({first: 'Denese', last: 'Dossett'}), 'should capitalize the first letter of the first and last names');

// We are interested in knowing how our team is generally performing. Write a function averageTeamSales that takes in the salesTeam array and returns a single number, the average of all sales for the team. Make sure to round up your result.


// Tests will use a different team with the exact same data structure
// No other input values will be tested
// Tests will inspect the output value and type


var averageTeamSales = function (salesTeam) {
    var total = salesTeam.reduce(function(a,b){
      return a + parseInt(b.sales.substring(1));
    },0);
    return Math.round(total/ salesTeam.length);
};

console.log(averageTeamSales(salesTeam));

// Use the assert function provided in Part 2 to write a single meaningful test for averageTeamSales, using salesTeam as the input.

// Note: The average team sales is 7487.

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

var input = averageTeamSales(salesTeam);
assert(input === 7487, " should give the correct average team sales");

// Write a function highestEarner that takes in the salesTeam array and returns a single string of the team member's first name, last name, and amount of sales.


// console.log(highestEarner(salesTeam)); // should output "Earline Erickson: $18876"

  // {name: {first: 'vergie', last: 'villescas'}, age: 25, sales: '$8712'}];

function highestEarner(salesTeam){
  var highestsales = 0;
  var highestsalesperson;

  for( var i = 0 ; i < salesTeam.length ; i++ ){
    var curr = salesTeam[i];
    if( parseInt(curr.sales.substring(1)) > highestsales ){
      highestsales = parseInt(curr.sales.substring(1));
      highestsalesperson = curr;
    }
  }
  return highestsalesperson.name.first + " " + highestsalesperson.name.last + ": " + highestsalesperson.sales;

}

console.log(highestEarner(salesTeam));


// Starter Code





// 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);
    }
  }
}

function filter(collection, predicate) {
  // Your code below. You must use reduce in your solution.

  return reduce(collection, function(newArr,cur){
    if(predicate(cur)){
      newArr.push(cur);
    }
    return newArr
  },[])

}

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];