101 lines
5.4 KiB
HTML
Executable File
101 lines
5.4 KiB
HTML
Executable File
<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<title>Array Champion 3000</title>
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<link rel="icon" href="https://fav.farm/🏆">
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</head>
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<body>
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<p><em>Psst: have a look at the JavaScript Console</em> 💁</p>
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<script>
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// It's time to work out those array muscles! 💪
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// Complete the following exercises to get your array game on point.
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// Become an array CHAMPION!!!1!! 🏆🏆🏆
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// Some data we can work with
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const inventors = [
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{ first: 'Albert', last: 'Einstein', year: 1879, passed: 1955 },
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{ first: 'Isaac', last: 'Newton', year: 1643, passed: 1727 },
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{ first: 'Galileo', last: 'Galilei', year: 1564, passed: 1642 },
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{ first: 'Marie', last: 'Curie', year: 1867, passed: 1934 },
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{ first: 'Johannes', last: 'Kepler', year: 1571, passed: 1630 },
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{ first: 'Nicolaus', last: 'Copernicus', year: 1473, passed: 1543 },
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{ first: 'Max', last: 'Planck', year: 1858, passed: 1947 },
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{ first: 'Katherine', last: 'Blodgett', year: 1898, passed: 1979 },
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{ first: 'Ada', last: 'Lovelace', year: 1815, passed: 1852 },
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{ first: 'Sarah E.', last: 'Goode', year: 1855, passed: 1905 },
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{ first: 'Lise', last: 'Meitner', year: 1878, passed: 1968 },
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{ first: 'Hanna', last: 'Hammarström', year: 1829, passed: 1909 }
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];
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const people = [
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'Bernhard, Sandra', 'Bethea, Erin', 'Becker, Carl', 'Bentsen, Lloyd', 'Beckett, Samuel', 'Blake, William', 'Berger, Ric', 'Beddoes, Mick', 'Beethoven, Ludwig',
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'Belloc, Hilaire', 'Begin, Menachem', 'Bellow, Saul', 'Benchley, Robert', 'Blair, Robert', 'Benenson, Peter', 'Benjamin, Walter', 'Berlin, Irving',
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'Benn, Tony', 'Benson, Leana', 'Bent, Silas', 'Berle, Milton', 'Berry, Halle', 'Biko, Steve', 'Beck, Glenn', 'Bergman, Ingmar', 'Black, Elk', 'Berio, Luciano',
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'Berne, Eric', 'Berra, Yogi', 'Berry, Wendell', 'Bevan, Aneurin', 'Ben-Gurion, David', 'Bevel, Ken', 'Biden, Joseph', 'Bennington, Chester', 'Bierce, Ambrose',
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'Billings, Josh', 'Birrell, Augustine', 'Blair, Tony', 'Beecher, Henry', 'Biondo, Frank'
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];
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// Array.prototype.filter()
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// 1. Filter the list of inventors for those who were born in the 1500's
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// Store the result in a variable called 'fifteen'
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const fifteen = inventors.filter((inventor) => inventor.year >= 1500 && inventor.year < 1600)
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// Array.prototype.map()
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// 2. Give us an array of the inventors first and last names
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// Store the result in a variable called 'fullNames'
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const fullNames = inventors.map((inventor) => `${inventor.first} ${inventor.last}`)
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// Array.prototype.toSorted()
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// 3. Sort the inventors by birthdate, oldest to youngest
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// Store the result in a variable called 'ordered'
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const ordered = inventors.toSorted((previous, current) => previous.year - current.year)
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// Array.prototype.reduce()
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// 4. How many years did all the inventors live all together?
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// Store the result in a variable called 'totalYears'
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const totalYears = inventors.reduce((previous, current) => previous + (current.passed - current.year), 0)
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// 5. Sort the inventors by years lived
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// Store the result in a variable called 'oldest'
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const oldest = inventors.toSorted((previous, current) => (current.passed - current.year) - (previous.passed - previous.year))
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// 6. Create a list of Boulevards in Paris that contain 'de' anywhere in the name
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// https://en.wikipedia.org/wiki/Category:Boulevards_in_Paris
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// Store the result in a variable called 'category'
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const boulevards = [
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'Boulevards of Paris', 'City walls of Paris', 'Thiers wall', 'Wall of Charles V', 'Wall of Philip II Augustus', 'City gates of Paris',
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"Haussmann's renovation of Paris", 'Boulevards of the Marshals', 'Boulevard Auguste-Blanqui', 'Boulevard Barbès', 'Boulevard Beaumarchais',
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"Boulevard de l'Amiral-Bruix", 'Boulevard Mortier', 'Boulevard Poniatowski', 'Boulevard Soult', 'Boulevard des Capucines',
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'Boulevard de la Chapelle', 'Boulevard de Clichy', 'Boulevard du Crime', "Boulevard du Général-d'Armée-Jean-Simon", 'Boulevard Haussmann',
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"Boulevard de l'Hôpital", 'Boulevard des Italiens', 'Boulevard Lefebvre', 'Boulevard de la Madeleine', 'Boulevard de Magenta',
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'Boulevard Malesherbes', 'Boulevard Marguerite-de-Rochechouart', 'Boulevard Montmartre', 'Boulevard du Montparnasse', 'Boulevard Raspail',
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'Boulevard Richard-Lenoir', 'Boulevard Saint-Germain', 'Boulevard Saint-Michel', 'Boulevard de Sébastopol', 'Boulevard de Strasbourg',
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'Boulevard du Temple', 'Boulevard Voltaire', 'Boulevard de la Zone']
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const category = boulevards.filter((boulevard) => /de/.test(boulevard))
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// 7. Sorting exercise
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// Sort the people alphabetically by last name
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// Store the result in a variable called 'alpha'
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const alpha = people.toSorted((previous, current) => previous.split(", ")[0].localeCompare(current.split(", ")[0]))
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// 8. Reduce Exercise
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// Sum up the instances of each of these:
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const data = ['car', 'car', 'truck', 'truck', 'bike', 'walk', 'car', 'van', 'bike', 'walk', 'car', 'van', 'car', 'truck'];
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// Store the result in a variable called 'transportation'
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// The result should be an object where the keys are the names of the transportation methods and the values are the number of instances
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const transportation = data.reduce((obj, current) => Object.assign(obj, { [current]: (obj[current] ?? 0) + 1 }), {})
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</script>
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</body>
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</html> |