Completed lesson 04

dcrall · dcrall · commit f56173d0743c · 2019-12-29T08:06:11.000-06:00
diff --git a/04 - Array Cardio Day 1/index-START.html b/04 - Array Cardio Day 1/index-START.html
@@ -31,29 +31,77 @@
 
     // Array.prototype.filter()
     // 1. Filter the list of inventors for those who were born in the 1500's
+    let sixteenthCentury = inventors.filter(i => i.year > 1499 && i.year < 1600);
+    // console.table(sixteenthCentury);
 
     // Array.prototype.map()
     // 2. Give us an array of the inventors' first and last names
+    let firstLast = inventors.map(i => `${i.first} ${i.last}`);
+    // console.log(firstLast);
 
     // Array.prototype.sort()
     // 3. Sort the inventors by birthdate, oldest to youngest
+    inventors.sort((a, b) => b.year - a.year);
+    // console.log('Oldest to youngest');
+    // console.table(inventors);
 
     // Array.prototype.reduce()
     // 4. How many years did all the inventors live?
+    let totalYears =inventors.reduce((total, i) => (total + (i.passed - i.year)), 0);
+    // console.log('Total years', totalYears);
+
+    // Wes' solution
+    // const totalYears = inventors.reduce((total, inventor) => {
+    //   return total + (inventor.passed - inventor.year);
+    // }, 0);
+    // console.log('Total years:', totalYears);
 
     // 5. Sort the inventors by years lived
+    console.log('Sort by years lived');
+    inventors.forEach(i => i.age = (i.passed - i.year)); 
+    inventors.sort((a, b) => b.age - a.age);
+    console.table(inventors);
 
     // 6. create a list of Boulevards in Paris that contain 'de' anywhere in the name
     // https://en.wikipedia.org/wiki/Category:Boulevards_in_Paris
 
+    // Have to run this code against the Wikipedia page
+    // let category = document.querySelector('.mw-category');
+
+    // // querySelectorAll returns a NodeList, not an array
+    // let links = Array.from(category.querySelectorAll('a'));
+
+    // let de = links
+    //   .map(link => link.textContent)
+    //   .filter(link => link.includes(' de '));
 
     // 7. sort Exercise
     // Sort the people alphabetically by last name
+    people.sort((lastOne, nextOne) => {
+      let [aLast, aFirst] = lastOne.split(', ');
+      let [bLast, bFirst] = nextOne.split(', ');
+
+      if(aLast < bLast) return -1;
+      else if (aLast === bLast) return 0;
+      else return 1;
+    });
+    // console.log(people);
 
     // 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' ];
 
+    let transportation = data.reduce((obj, item) => {
+      if(!obj[item]) { 
+        obj[item] = 0; 
+      }
+      
+      obj[item]++
+      return obj;
+    }, {});
+
+    console.table(transportation);
+
   </script>
 </body>
 </html>
