finished 4

Brad Stayte · Brad Stayte · commit cb91aa347b78 · 2016-12-23T09:35:24.000-05:00
diff --git a/04 - Array Cardio Day 1/index-START.html b/04 - Array Cardio Day 1/index-START.html
@@ -31,31 +31,65 @@
 
     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'];
 
+    const name = inventor => `${inventor.first} ${inventor.last}`;
+    const nameAndYear = inventor => `${name(inventor)} : ${inventor.year}`;
+    const nameYearAndAge = inventor => `${nameAndYear(inventor)} : ${inventor.passed - inventor.year}`;
+    const printArray = (results, format) => console.log(results.map(format).join('\n'));
+
     // Array.prototype.filter()
     // 1. Filter the list of inventors for those who were born in the 1500's
+    
+    printArray(inventors.filter(inventor => inventor.year >=1500 && inventor.year < 1600), nameAndYear);
 
     // Array.prototype.map()
     // 2. Give us an array of the inventors' first and last names
 
+    printArray(inventors, name);
+
     // Array.prototype.sort()
     // 3. Sort the inventors by birthdate, oldest to youngest
 
+    printArray(inventors.sort((a, b) => a.year - b.year), nameAndYear);
+
     // Array.prototype.reduce()
     // 4. How many years did all the inventors live?
 
+    console.log(inventors.reduce((sum, curr) => sum + curr.passed - curr.year, 0));
+
     // 5. Sort the inventors by years lived
 
+    printArray(inventors.sort((a, b) => (a.passed - a.year) - (b.passed - b.year)), nameYearAndAge);
+
     // 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 titles = [];
+    document.querySelectorAll('.mw-category-group a').forEach(i => titles.push(i.title));
+    console.log(titles.filter(i => i.indexOf(' de ') > -1).length);
 
     // 7. sort Exercise
     // Sort the people alphabetically by last name
 
+    printArray(people.sort((a, b) => {
+      if (a.toUpperCase() < b.toUpperCase()) {
+        return -1;
+      }
+      if (a.toUpperCase() > b.toUpperCase()) {
+        return 1;
+      }
+      return 0;
+    }), i => i );
+
     // 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' ];
 
+    console.log(data.reduce((all, current) => {
+      let counter = all.get(current) || 0;
+      all.set(current, counter+1);
+      return all;
+    }, new Map()));
+
   </script>
 </body>
 </html>
