array-methods.js

// 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.

const runners = [
    { id: 1, first_name: 'Charmain', last_name: 'Seiler', email: 'cseiler0@wired.com', shirt_size: '2XL', company_name: 'Divanoodle', donation: 75 },
    { id: 2, first_name: 'Whitaker', last_name: 'Ierland', email: 'wierland1@angelfire.com', shirt_size: '2XL', company_name: 'Wordtune', donation: 148 },
    { id: 3, first_name: 'Julieta', last_name: 'McCloid', email: 'jmccloid2@yahoo.com', shirt_size: 'S', company_name: 'Riffpedia', donation: 171 },
    { id: 4, first_name: 'Martynne', last_name: 'Paye', email: 'mpaye3@sciencedaily.com', shirt_size: 'XL', company_name: 'Wordware', donation: 288 },
    { id: 5, first_name: 'Gussy', last_name: 'Raraty', email: 'graraty4@ucoz.ru', shirt_size: 'L', company_name: 'Oozz', donation: 291 },
    { id: 6, first_name: 'Yule', last_name: 'Tommasetti', email: 'ytommasetti5@state.gov', shirt_size: 'S', company_name: 'Yodo', donation: 27 },
    { id: 7, first_name: 'Kathie', last_name: 'Majury', email: 'kmajury6@guardian.co.uk', shirt_size: '3XL', company_name: 'Zoomcast', donation: 261 },
    { id: 8, first_name: 'Tanner', last_name: 'Branton', email: 'tbranton7@tmall.com', shirt_size: '2XL', company_name: 'Realmix', donation: 28 },
    { id: 9, first_name: 'Sarina', last_name: 'Lasham', email: 'slasham8@toplist.cz', shirt_size: 'XL', company_name: 'Gigashots', donation: 110 },
    { id: 10, first_name: 'Bertie', last_name: 'Lonergan', email: 'blonergan9@issuu.com', shirt_size: '3XL', company_name: 'Skinte', donation: 62 },
    { id: 11, first_name: 'Trevor', last_name: 'Studd', email: 'tstudda@networkadvertising.org', shirt_size: 'S', company_name: 'Cogidoo', donation: 76 },
    { id: 12, first_name: 'Malachi', last_name: 'Okeshott', email: 'mokeshottb@chron.com', shirt_size: 'M', company_name: 'DabZ', donation: 91 },
    { id: 13, first_name: 'Berget', last_name: 'Logsdail', email: 'blogsdailc@wix.com', shirt_size: 'M', company_name: 'Mymm', donation: 9 },
    { id: 14, first_name: 'Loise', last_name: 'Rivlin', email: 'lrivlind@behance.net', shirt_size: '2XL', company_name: 'Linktype', donation: 204 },
    { id: 15, first_name: 'Christan', last_name: 'Kendall', email: 'ckendalle@example.com', shirt_size: 'XS', company_name: 'Skinix', donation: 252 },
    { id: 16, first_name: 'Kayla', last_name: 'Whitwam', email: 'kwhitwamf@deliciousdays.com', shirt_size: '2XL', company_name: 'Oyope', donation: 147 },
    { id: 17, first_name: 'Heddie', last_name: 'Heningam', email: 'hheningamg@tripadvisor.com', shirt_size: 'L', company_name: 'Skinix', donation: 172 },
    { id: 18, first_name: 'Mace', last_name: 'Ballinger', email: 'mballingerh@a8.net', shirt_size: 'S', company_name: 'Nlounge', donation: 266 },
    { id: 19, first_name: 'Nola', last_name: 'Abberley', email: 'nabberleyi@jalbum.net', shirt_size: 'XL', company_name: 'Photospace', donation: 148 },
    { id: 20, first_name: 'Nadine', last_name: 'Tresler', email: 'ntreslerj@marketwatch.com', shirt_size: '3XL', company_name: 'Wikido', donation: 292 },
    { id: 21, first_name: 'Ulrikaumeko', last_name: 'Vuittet', email: 'uvuittetk@gov.uk', shirt_size: 'S', company_name: 'Skinte', donation: 102 },
    { id: 22, first_name: 'Saunder', last_name: 'Spennock', email: 'sspennockl@icq.com', shirt_size: '3XL', company_name: 'Kwimbee', donation: 213 },
    { id: 23, first_name: 'Carmel', last_name: 'Woffinden', email: 'cwoffindenm@wikispaces.com', shirt_size: 'S', company_name: 'Rooxo', donation: 137 },
    { id: 24, first_name: 'Marielle', last_name: 'Kimmel', email: 'mkimmeln@jimdo.com', shirt_size: 'M', company_name: 'Livetube', donation: 96 },
    { id: 25, first_name: 'Brucie', last_name: 'Burris', email: 'bburriso@slate.com', shirt_size: '2XL', company_name: 'Wordtune', donation: 128 },
    { id: 26, first_name: 'Juan', last_name: 'Berzon', email: 'jberzonp@soup.io', shirt_size: '3XL', company_name: 'Einti', donation: 234 },
    { id: 27, first_name: 'Sacha', last_name: 'Olsen', email: 'solsenq@reverbnation.com', shirt_size: '2XL', company_name: 'Viva', donation: 190 },
    { id: 28, first_name: 'Jamey', last_name: "O'Nolan", email: 'jonolanr@samsung.com', shirt_size: 'XL', company_name: 'Skinix', donation: 31 },
    { id: 29, first_name: 'Morrie', last_name: 'Rainard', email: 'mrainards@yale.edu', shirt_size: 'XS', company_name: 'Podcat', donation: 52 },
    { id: 30, first_name: 'Fidel', last_name: 'Roskelly', email: 'froskellyt@ibm.com', shirt_size: 'XS', company_name: 'Avavee', donation: 5 },
    { id: 31, first_name: 'Toni', last_name: 'MacSweeney', email: 'tmacsweeneyu@parallels.com', shirt_size: 'M', company_name: 'Jaloo', donation: 82 },
    { id: 32, first_name: 'Jessey', last_name: 'Walhedd', email: 'jwalheddv@slashdot.org', shirt_size: 'L', company_name: 'Trilia', donation: 5 },
    { id: 33, first_name: 'Karola', last_name: 'Piper', email: 'kpiperw@ucsd.edu', shirt_size: '3XL', company_name: 'Yombu', donation: 110 },
    { id: 34, first_name: 'Marley', last_name: 'Mitchenson', email: 'mmitchensonx@webeden.co.uk', shirt_size: 'M', company_name: 'Zoonoodle', donation: 97 },
    { id: 35, first_name: 'Marrilee', last_name: 'Thrasher', email: 'mthrashery@opensource.org', shirt_size: 'XL', company_name: 'Bluejam', donation: 17 },
    { id: 36, first_name: 'Tye', last_name: 'Manie', email: 'tmaniez@netscape.com', shirt_size: 'L', company_name: 'Kanoodle', donation: 30 },
    { id: 37, first_name: 'Charleen', last_name: 'Sheering', email: 'csheering10@mit.edu', shirt_size: '3XL', company_name: 'Jatri', donation: 262 },
    { id: 38, first_name: 'Valma', last_name: 'Eynaud', email: 'veynaud11@archive.org', shirt_size: 'XS', company_name: 'Jaxbean', donation: 212 },
    { id: 39, first_name: 'Dollie', last_name: 'McDarmid', email: 'dmcdarmid12@tinyurl.com', shirt_size: 'S', company_name: 'Kayveo', donation: 74 },
    { id: 40, first_name: 'Minna', last_name: 'Hymas', email: 'mhymas13@cornell.edu', shirt_size: 'XS', company_name: 'Vimbo', donation: 101 },
    { id: 41, first_name: 'Jsandye', last_name: 'Frend', email: 'jfrend14@ca.gov', shirt_size: 'XS', company_name: 'Latz', donation: 156 },
    { id: 42, first_name: 'Yevette', last_name: 'Hacket', email: 'yhacket15@wp.com', shirt_size: 'XL', company_name: 'Lazzy', donation: 291 },
    { id: 43, first_name: 'Hank', last_name: 'Zebedee', email: 'hzebedee16@ezinearticles.com', shirt_size: 'L', company_name: 'Gigashots', donation: 241 },
    { id: 44, first_name: 'Jodie', last_name: 'Stawell', email: 'jstawell17@yale.edu', shirt_size: 'S', company_name: 'Jaxspan', donation: 262 },
    { id: 45, first_name: 'Falito', last_name: 'Karsh', email: 'fkarsh18@pcworld.com', shirt_size: 'S', company_name: 'Mycat', donation: 239 },
    { id: 46, first_name: 'Reginauld', last_name: 'Purselowe', email: 'rpurselowe19@thetimes.co.uk', shirt_size: 'L', company_name: 'Jabbersphere', donation: 11 },
    { id: 47, first_name: 'Vida', last_name: 'Tydd', email: 'vtydd1a@dropbox.com', shirt_size: 'S', company_name: 'Quaxo', donation: 55 },
    { id: 48, first_name: 'Anderea', last_name: 'MacGiolla Pheadair', email: 'amacgiollapheadair1b@xing.com', shirt_size: '2XL', company_name: 'Kwimbee', donation: 214 },
    { id: 49, first_name: 'Bel', last_name: 'Alway', email: 'balway1c@ow.ly', shirt_size: 'S', company_name: 'Voolia', donation: 107 },
    { id: 50, first_name: 'Shell', last_name: 'Baine', email: 'sbaine1d@intel.com', 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(runner => fullNames.push(runner.first_name + runner.last_name))
console.log(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 = []
firstNamesAllCaps = runners.map(runner => runner.first_name.toUpperCase())
console.log(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 = []
let runnersLargeSizeShirt = runners.filter(runner => runner.shirt_size === 'L')
console.log(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, amount) => {
    return total += amount.donation;
}, 0)

console.log(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

// Problem 2

// Problem 3