04 Array cardio

pbrdmn · pbrdmn · commit 00f65561df8d · 2018-03-16T07:01:56.000+11:00
diff --git a/04 - Array Cardio Day 1/index.html b/04 - Array Cardio Day 1/index.html
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+<!DOCTYPE html>
+<html lang="en">
+
+<head>
+  <meta charset="UTF-8">
+  <title>Array Cardio 💪</title>
+</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 = ['Beck, Glenn', 'Becker, Carl', 'Beckett, Samuel', 'Beddoes, Mick', 'Beecher, Henry', 'Beethoven, Ludwig', 'Begin, Menachem', 'Belloc, Hilaire', 'Bellow, Saul', 'Benchley, Robert', 'Benenson, Peter', 'Ben-Gurion, David', 'Benjamin, Walter', 'Benn, Tony', 'Bennington, Chester', 'Benson, Leana', 'Bent, Silas', 'Bentsen, Lloyd', 'Berger, Ric', 'Bergman, Ingmar', 'Berio, Luciano', 'Berle, Milton', 'Berlin, Irving', 'Berne, Eric', 'Bernhard, Sandra', 'Berra, Yogi', 'Berry, Halle', 'Berry, Wendell', 'Bethea, Erin', 'Bevan, Aneurin', 'Bevel, Ken', 'Biden, Joseph', 'Bierce, Ambrose', 'Biko, Steve', 'Billings, Josh', 'Biondo, Frank', 'Birrell, Augustine', 'Black, Elk', 'Blair, Robert', 'Blair, Tony', 'Blake, William'];
+
+    // Array.prototype.filter()
+    // 1. Filter the list of inventors for those who were born in the 1500's
+    const bornIn1500s = inventors.filter(({ year }) => (year >= 1500 && year < 1600))
+    console.group('Born in 1500s')
+    console.table(bornIn1500s)
+    console.groupEnd()
+
+    // Array.prototype.map()
+    // 2. Give us an array of the inventors' first and last names
+    const fullNames = inventors.map(({ first, last }) => `${first} ${last}`)
+    console.group('Full Names')
+    console.table(fullNames)
+    console.groupEnd()
+
+    // Array.prototype.sort()
+    // 3. Sort the inventors by birthdate, oldest to youngest
+    const sorted = [...inventors].sort((a, b) => a.year - b.year)
+    console.group('Sorted by birthdate')
+    console.table(sorted)
+    console.groupEnd()
+
+    // Array.prototype.reduce()
+    // 4. How many years did all the inventors live?
+    const years = inventors.reduce((sum, { year, passed }) => sum + (passed - year + 1), 0)
+    console.group('Total years lives')
+    console.log({ years })
+    console.groupEnd()
+
+    // 5. Sort the inventors by years lived
+    const lifespan = inventors.map(person => {
+      person.lifespan = (person.passed - person.year + 1)
+      return person
+    }).sort((a, b) => a.lifespan - b.lifespan)
+    console.group('Sorted by years lived')
+    console.table(lifespan)
+    console.groupEnd()
+
+    // 6. create a list of Boulevards in Paris that contain 'de' anywhere in the name
+    // https://en.wikipedia.org/wiki/Category:Boulevards_in_Paris
+
+
+    // 7. sort Exercise
+    // Sort the people alphabetically by last name
+    const alphabetically = [...inventors].sort((a, b) => a.last > b.last)
+    console.group('Sorted by Surname')
+    console.table(alphabetically)
+    console.groupEnd()
+
+    // 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 carStats = data.reduce((tally, vehicle) => {
+      if (!tally.hasOwnProperty(vehicle)) {
+        tally[vehicle] = 1
+      } else {
+        tally[vehicle]++
+      }
+      return tally
+    }, {})
+    console.group('Counting cars')
+    console.table(carStats)
+    console.groupEnd()
+
+
+  </script>
+</body>
+
+</html>
