@@ -33,28 +33,80 @@
 
     // 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 < 1600));
+      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(function(a, b) { 
+      //   if(a.year > b.year) {
+      //     return 1;
+      //   } else {
+      //     return -1;
+      //   }
+      // });
+
+      //Shorter version of above - ternary function.
+      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?
+      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(function(a, b){
+        const lastGuy = a.passed - a.year;
+        const nextGuy = b.passed - b.year;
+        return lastGuy > nextGuy ? -1 : 1;
+
+        // if(lastGuy > nextGuy) {
+        //   return -1;
+        // } else {
+        //   return 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 = Array.from(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(function(lastOne, nextOne){
+        const [aLast, aFirst] = lastOne.split(', ');
+        const [bLast, bFirst] = nextOne.split(', ');
+        return aLast > bLast ? 1 : -1;
+      });
+      console.log(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(function(obj, item){
+      if (!obj[item]) {
+        obj[item] = 0;
+      }
+      obj[item]++;
+      return obj;
+    }, {});
+
+    console.log(transportation);
 
   </script>
 </body>