04 day

Tkum · Tkum · commit 69482914379d · 2016-12-10T18:00:57.000+02:00
diff --git a/04 - Array Cardio Day 1/index-START.html b/04 - Array Cardio Day 1/index-START.html
@@ -27,29 +27,45 @@
 
     // Array.prototype.filter()
     // 1. Filter the list of inventors for those who were born in the 1500's
-
+    console.table(inventors.filter(item => item.year > 1500 && item.year < 1600));
+    
     // Array.prototype.map()
     // 2. Give us an array of the inventory first and last names
-
+    console.log(inventors.map(item => `${item.first} ${item.last}` ));
     // Array.prototype.sort()
     // 3. Sort the inventors by birthdate, oldest to youngest
+    console.table(inventors.sort((a, b) => a.year - b.year));
 
     // Array.prototype.reduce()
     // 4. How many years did all the inventors live?
-
+    console.log(inventors.reduce((total, inventor) => (total += (inventor.passed - inventor.year) ), 0 )) ;
     // 5. Sort the inventors by years lived
+    console.table(inventors.sort((a, b) => {
+      return (a.passed - a.year) < (b.passed - b.year) ? 1 : -1;
+    })) ;
 
     // 6. create a list of Boulevards in Paris that contain 'de' anywhere in the name
     // https://en.wikipedia.org/wiki/Category:Boulevards_in_Paris
-
-
+    links = [...document.querySelectorAll('.mw-category a')]
+    links = Array.from(document.querySelectorAll('.mw-category a'));
+    de = links.map(link => link.textContent)
+              .filter(item => item.indexOf('de') > -1);
+    console.log(de);
     // 7. sort Exercise
     // Sort the people alphabetically by last name
-
+    console.log(people.sort((a,b) =>{
+      const [aLast, aFirst] = a.split(', ');
+      const [bLast, bFirst] = b.split(', ');
+      return aLast > bLast ? 1 : -1;
+    }))
     // 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((obj, item) => { 
+      if (!obj[item]) obj[item] = 0;
+      obj[item]++;
+      return obj
+    },{}));
   </script>
 </body>
 </html>
