forked from bloominstituteoftechnology/JavaScript-II
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy patharray-methods.js
More file actions
139 lines (121 loc) · 11.7 KB
/
array-methods.js
File metadata and controls
139 lines (121 loc) · 11.7 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
// A local community center is holding a fund raising 5k fun run and has invited 50 small businesses to make a small donation on their behalf
// for some much needed updates to their facilities. Each business has assigned a representative to attend the event along with a small donation.
// Scroll to the bottom of the list to use some advanced array methods to help the event director gather some information from the businesses.
//prettier-ignore
const runners = [
{ id: 1, first_name: "Charmain", last_name: "Seiler", email: "[email protected]", shirt_size: "2XL", company_name: "Divanoodle", donation: 75 },
{ id: 2, first_name: "Whitaker", last_name: "Ierland", email: "[email protected]", shirt_size: "2XL", company_name: "Wordtune", donation: 148 },
{ id: 3, first_name: "Julieta", last_name: "McCloid", email: "[email protected]", shirt_size: "S", company_name: "Riffpedia", donation: 171 },
{ id: 4, first_name: "Martynne", last_name: "Paye", email: "[email protected]", shirt_size: "XL", company_name: "Wordware", donation: 288 },
{ id: 5, first_name: "Gussy", last_name: "Raraty", email: "[email protected]", shirt_size: "L", company_name: "Oozz", donation: 291 },
{ id: 6, first_name: "Yule", last_name: "Tommasetti", email: "[email protected]", shirt_size: "S", company_name: "Yodo", donation: 27 },
{ id: 7, first_name: "Kathie", last_name: "Majury", email: "[email protected]", shirt_size: "3XL", company_name: "Zoomcast", donation: 261 },
{ id: 8, first_name: "Tanner", last_name: "Branton", email: "[email protected]", shirt_size: "2XL", company_name: "Realmix", donation: 28 },
{ id: 9, first_name: "Sarina", last_name: "Lasham", email: "[email protected]", shirt_size: "XL", company_name: "Gigashots", donation: 110 },
{ id: 10, first_name: "Bertie", last_name: "Lonergan", email: "[email protected]", shirt_size: "3XL", company_name: "Skinte", donation: 62 },
{ id: 11, first_name: "Trevor", last_name: "Studd", email: "[email protected]", shirt_size: "S", company_name: "Cogidoo", donation: 76 },
{ id: 12, first_name: "Malachi", last_name: "Okeshott", email: "[email protected]", shirt_size: "M", company_name: "DabZ", donation: 91 },
{ id: 13, first_name: "Berget", last_name: "Logsdail", email: "[email protected]", shirt_size: "M", company_name: "Mymm", donation: 9 },
{ id: 14, first_name: "Loise", last_name: "Rivlin", email: "[email protected]", shirt_size: "2XL", company_name: "Linktype", donation: 204 },
{ id: 15, first_name: "Christan", last_name: "Kendall", email: "[email protected]", shirt_size: "XS", company_name: "Skinix", donation: 252 },
{ id: 16, first_name: "Kayla", last_name: "Whitwam", email: "[email protected]", shirt_size: "2XL", company_name: "Oyope", donation: 147 },
{ id: 17, first_name: "Heddie", last_name: "Heningam", email: "[email protected]", shirt_size: "L", company_name: "Skinix", donation: 172 },
{ id: 18, first_name: "Mace", last_name: "Ballinger", email: "[email protected]", shirt_size: "S", company_name: "Nlounge", donation: 266 },
{ id: 19, first_name: "Nola", last_name: "Abberley", email: "[email protected]", shirt_size: "XL", company_name: "Photospace", donation: 148 },
{ id: 20, first_name: "Nadine", last_name: "Tresler", email: "[email protected]", shirt_size: "3XL", company_name: "Wikido", donation: 292 },
{ id: 21, first_name: "Ulrikaumeko", last_name: "Vuittet", email: "[email protected]", shirt_size: "S", company_name: "Skinte", donation: 102 },
{ id: 22, first_name: "Saunder", last_name: "Spennock", email: "[email protected]", shirt_size: "3XL", company_name: "Kwimbee", donation: 213 },
{ id: 23, first_name: "Carmel", last_name: "Woffinden", email: "[email protected]", shirt_size: "S", company_name: "Rooxo", donation: 137 },
{ id: 24, first_name: "Marielle", last_name: "Kimmel", email: "[email protected]", shirt_size: "M", company_name: "Livetube", donation: 96 },
{ id: 25, first_name: "Brucie", last_name: "Burris", email: "[email protected]", shirt_size: "2XL", company_name: "Wordtune", donation: 128 },
{ id: 26, first_name: "Juan", last_name: "Berzon", email: "[email protected]", shirt_size: "3XL", company_name: "Einti", donation: 234 },
{ id: 27, first_name: "Sacha", last_name: "Olsen", email: "[email protected]", shirt_size: "2XL", company_name: "Viva", donation: 190 },
{ id: 28, first_name: "Jamey", last_name: "O'Nolan", email: "[email protected]", shirt_size: "XL", company_name: "Skinix", donation: 31 },
{ id: 29, first_name: "Morrie", last_name: "Rainard", email: "[email protected]", shirt_size: "XS", company_name: "Podcat", donation: 52 },
{ id: 30, first_name: "Fidel", last_name: "Roskelly", email: "[email protected]", shirt_size: "XS", company_name: "Avavee", donation: 5 },
{ id: 31, first_name: "Toni", last_name: "MacSweeney", email: "[email protected]", shirt_size: "M", company_name: "Jaloo", donation: 82 },
{ id: 32, first_name: "Jessey", last_name: "Walhedd", email: "[email protected]", shirt_size: "L", company_name: "Trilia", donation: 5 },
{ id: 33, first_name: "Karola", last_name: "Piper", email: "[email protected]", shirt_size: "3XL", company_name: "Yombu", donation: 110 },
{ id: 34, first_name: "Marley", last_name: "Mitchenson", email: "[email protected]", shirt_size: "M", company_name: "Zoonoodle", donation: 97 },
{ id: 35, first_name: "Marrilee", last_name: "Thrasher", email: "[email protected]", shirt_size: "XL", company_name: "Bluejam", donation: 17 },
{ id: 36, first_name: "Tye", last_name: "Manie", email: "[email protected]", shirt_size: "L", company_name: "Kanoodle", donation: 30 },
{ id: 37, first_name: "Charleen", last_name: "Sheering", email: "[email protected]", shirt_size: "3XL", company_name: "Jatri", donation: 262 },
{ id: 38, first_name: "Valma", last_name: "Eynaud", email: "[email protected]", shirt_size: "XS", company_name: "Jaxbean", donation: 212 },
{ id: 39, first_name: "Dollie", last_name: "McDarmid", email: "[email protected]", shirt_size: "S", company_name: "Kayveo", donation: 74 },
{ id: 40, first_name: "Minna", last_name: "Hymas", email: "[email protected]", shirt_size: "XS", company_name: "Vimbo", donation: 101 },
{ id: 41, first_name: "Jsandye", last_name: "Frend", email: "[email protected]", shirt_size: "XS", company_name: "Latz", donation: 156 },
{ id: 42, first_name: "Yevette", last_name: "Hacket", email: "[email protected]", shirt_size: "XL", company_name: "Lazzy", donation: 291 },
{ id: 43, first_name: "Hank", last_name: "Zebedee", email: "[email protected]", shirt_size: "L", company_name: "Gigashots", donation: 241 },
{ id: 44, first_name: "Jodie", last_name: "Stawell", email: "[email protected]", shirt_size: "S", company_name: "Jaxspan", donation: 262 },
{ id: 45, first_name: "Falito", last_name: "Karsh", email: "[email protected]", shirt_size: "S", company_name: "Mycat", donation: 239 },
{ id: 46, first_name: "Reginauld", last_name: "Purselowe", email: "[email protected]", shirt_size: "L", company_name: "Jabbersphere", donation: 11 },
{ id: 47, first_name: "Vida", last_name: "Tydd", email: "[email protected]", shirt_size: "S", company_name: "Quaxo", donation: 55 },
{ id: 48, first_name: "Anderea", last_name: "MacGiolla Pheadair", email: "[email protected]", shirt_size: "2XL", company_name: "Kwimbee", donation: 214 },
{ id: 49, first_name: "Bel", last_name: "Alway", email: "[email protected]", shirt_size: "S", company_name: "Voolia", donation: 107 },
{ id: 50, first_name: "Shell", last_name: "Baine", email: "[email protected]", shirt_size: "M", company_name: "Gabtype", donation: 171 },
];
// ==== Challenge 1: Use .forEach() ====
// The event director needs both the first and last names of each runner for their running bibs. Combine both the first and last names
// and populate a new array called `fullNames`. This array will contain just strings.
let fullNames = [];
runners.forEach(item => fullNames.push(`${item.first_name} ${item.last_name}`));
console.log("Full names of runners", fullNames);
// ==== Challenge 2: Use .map() ====
// The event director needs to have all the runners' first names in uppercase because the director BECAME DRUNK WITH POWER.
// Populate an array called `firstNamesAllCaps`. This array will contain just strings.
let firstNamesAllCaps = [];
runners.map(item => firstNamesAllCaps.push(item.first_name.toUpperCase()));
console.log("All names uppercase", firstNamesAllCaps);
// ==== Challenge 3: Use .filter() ====
// The large shirts won't be available for the event due to an ordering issue.
// We need a filtered version of the runners array, containing only those runners with
// large sized shirts so they can choose a different size. This will be an array of objects.
let runnersLargeSizeShirt = [];
runnersLargeSizeShirt = runners.filter(item => item.shirt_size == "L");
console.log("Runners wearing L size shirt", runnersLargeSizeShirt);
// ==== Challenge 4: Use .reduce() ====
// The donations need to be tallied up and reported for tax purposes.
// Add up all the donations and save the total into a ticketPriceTotal variable.
let ticketPriceTotal = 0;
ticketPriceTotal = runners.reduce((total, item) => total + item.donation, 0);
console.log("Total donations:", ticketPriceTotal);
// ==== Challenge 5: Be Creative ====
// Now that you have used .forEach(), .map(), .filter(), and .reduce().
// I want you to think of potential problems you could solve given the data set and the 5k fun run theme.
// Try to create and then solve 3 unique problems using one or many of the array methods listed above.
// Problem 1: Local Community Center's party planning committee wants to write a thank you letter to the
// managements of the companies from which the runners attended. So we need the unique company names listed.
let uniqueCompanyNames = [];
runners.map(item => {
if (!uniqueCompanyNames.includes(item.company_name)) {
uniqueCompanyNames.push(item.company_name);
}
});
console.log("Unique company names:", uniqueCompanyNames);
// Problem 2: Local Community Center values donations higher than $200 because nobody ever donated that much
// in the past. Now they need email addresses of those who donated over $200 so they can write special thank you emails.
// The emails need to be seperated by semicolon (;) so they can just copy paste the entire list and send the same
// thank you message to everyone in the list.
let specialThankYouList = [];
runners
.filter(item => item.donation > 199)
.map(item => {
specialThankYouList.push(item.email);
});
console.log("Special Thank You List", specialThankYouList.join("; "));
// Problem 3: Local Community Center's President is a smart(!) guy and wants to buy Teacoins with the donated money
// so that money can be multiplied in a couple of days and he can get that long-desired mini fridge in his office.
// Given the weekly price of Teacoins, calculate how many Teacoins he can buy with the HALF of donations in the first day
// and other HALF of the donations in the third day and how much is his total portfolio in the seventh day of the week.
const teacoinPrices = [1.22, 1.26, 1.35, 1.3, 1.29, 1.25, 1.27];
totalDonations = runners.reduce((total, item) => total + item.donation, 0);
const firstDayBuys = totalDonations / 2 / teacoinPrices[0];
const thirdDayBuys = totalDonations / 2 / teacoinPrices[2];
const totalCoins = firstDayBuys + thirdDayBuys;
const totalPortfolioOn7thDay = totalCoins * teacoinPrices[6];
console.log("Total Portfolio Worth on 7th Day", totalPortfolioOn7thDay);
console.log("Invested Amount", totalDonations);
console.log("Balance", totalPortfolioOn7thDay - totalDonations);
console.log(
"Seems like President does not get the long-desired mini fridge LOL"
);