Day 4 - Array Cardio

2023-02-16 08:57:04 -08:00 · 2023-02-16 08:57:04 -08:00 · 310bebf415
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+<!DOCTYPE html>
+<html lang="en">
+<head>
+  <meta charset="UTF-8">
+  <title>Array Cardio 💪</title>
+  <link rel="icon" href="https://fav.farm/🔥" />
+</head>
+<body>
+  <p><em>Psst: have a look at the JavaScript Console</em> 💁</p>
+  <script>
+    // Get your shorts on - this is an array workout!
+    // ## Array Cardio Day 1
+
+    // Some data we can work with
+
+    const inventors = [
+      { first: 'Albert', last: 'Einstein', year: 1879, passed: 1955 },
+      { first: 'Isaac', last: 'Newton', year: 1643, passed: 1727 },
+      { first: 'Galileo', last: 'Galilei', year: 1564, passed: 1642 },
+      { first: 'Marie', last: 'Curie', year: 1867, passed: 1934 },
+      { first: 'Johannes', last: 'Kepler', year: 1571, passed: 1630 },
+      { first: 'Nicolaus', last: 'Copernicus', year: 1473, passed: 1543 },
+      { first: 'Max', last: 'Planck', year: 1858, passed: 1947 },
+      { first: 'Katherine', last: 'Blodgett', year: 1898, passed: 1979 },
+      { first: 'Ada', last: 'Lovelace', year: 1815, passed: 1852 },
+      { first: 'Sarah E.', last: 'Goode', year: 1855, passed: 1905 },
+      { first: 'Lise', last: 'Meitner', year: 1878, passed: 1968 },
+      { first: 'Hanna', last: 'Hammarström', year: 1829, passed: 1909 }
+    ];
+
+    const people = [
+      'Bernhard, Sandra', 'Bethea, Erin', 'Becker, Carl', 'Bentsen, Lloyd', 'Beckett, Samuel', 'Blake, William', 'Berger, Ric', 'Beddoes, Mick', 'Beethoven, Ludwig',
+      'Belloc, Hilaire', 'Begin, Menachem', 'Bellow, Saul', 'Benchley, Robert', 'Blair, Robert', 'Benenson, Peter', 'Benjamin, Walter', 'Berlin, Irving',
+      'Benn, Tony', 'Benson, Leana', 'Bent, Silas', 'Berle, Milton', 'Berry, Halle', 'Biko, Steve', 'Beck, Glenn', 'Bergman, Ingmar', 'Black, Elk', 'Berio, Luciano',
+      'Berne, Eric', 'Berra, Yogi', 'Berry, Wendell', 'Bevan, Aneurin', 'Ben-Gurion, David', 'Bevel, Ken', 'Biden, Joseph', 'Bennington, Chester', 'Bierce, Ambrose',
+      'Billings, Josh', 'Birrell, Augustine', 'Blair, Tony', 'Beecher, Henry', 'Biondo, Frank'
+    ];
+    
+    // Array.prototype.filter()
+    // 1. Filter the list of inventors for those who were born in the 1500's
+    const fifteen = inventors.filter(inventor => (inventor.year >= 1500 && inventor.year <= 1599));
+    console.table(fifteen);
+
+    // Array.prototype.map()
+    // 2. Give us an array of the inventors first and last names
+    const fullNames = inventors.map(inventor => `${inventor.first} ${inventor.last}`);
+    console.log(fullNames);
+
+    // Array.prototype.sort()
+    // 3. Sort the inventors by birthdate, oldest to youngest
+    const ordered = inventors.sort((a, b) => (a.year > b.year) ? 1 : -1);
+    console.table(ordered);
+
+    // Array.prototype.reduce()
+    // 4. How many years did all the inventors live all together?
+    const totalYears = inventors.reduce((total, inventor) => {
+      return total + (inventor.passed - inventor.year);
+    }, 0);
+    console.log(totalYears);
+
+    // 5. Sort the inventors by years lived
+    const oldest  = inventors.sort((a, b) => {
+      const lastGuy = a.passed - a.year;
+      const nextGuy = b.passed - b.year;
+      return lastGuy > nextGuy ? -1 : 1
+    });
+    console.table(oldest);
+
+    // 6. create a list of Boulevards in Paris that contain 'de' anywhere in the name
+    // https://en.wikipedia.org/wiki/Category:Boulevards_in_Paris
+    // const category = document.querySelector('.mw-category');
+    // const links = [...category.querySelectorAll('a')];
+    // const de = links.map(link => link.textContent).filter(streetName => streetName.includes('de'));
+
+    // 7. sort Exercise
+    // Sort the people alphabetically by last name
+    const alpha = people.sort((a, b) =>{
+      const [alast, afirst] = a.split(', ');
+      const [blast, bfirst] = b.split(', ');
+      return alast > blast ? 1 : -1;
+    })
+
+    console.table(alpha);
+
+    // 8. Reduce Exercise
+    // Sum up the instances of each of these
+    const data = ['car', 'car', 'truck', 'truck', 'bike', 'walk', 'car', 'van', 'bike', 'walk', 'car', 'van', 'car', 'truck' ];
+
+    const transportation = data.reduce((a, b) => {
+      if(!a[b]){ a[b] = 0; }
+      a[b]++;
+      return a;
+    }, {});
+    console.log(transportation);
+
+  </script>
+</body>
+</html>