Finnish Array Cardio day 1

gachu2002 · gachu2002 · commit f87114580317 · 2024-10-05T20:11:47.000+07:00
diff --git a/04 - Array Cardio Day 1/index-START.html b/04 - Array Cardio Day 1/index-START.html
@@ -38,29 +38,53 @@
     
     // Array.prototype.filter()
     // 1. Filter the list of inventors for those who were born in the 1500's
+    const e1 = inventors.filter(inventor => inventor.year >= 1500 && inventor.year < 1600);
+    console.table(e1);
 
     // Array.prototype.map()
     // 2. Give us an array of the inventors first and last names
+    const e2 = inventors.map(inventor => `${inventor.first} ${inventor.last}`);
+    console.log(e2);
 
     // Array.prototype.sort()
     // 3. Sort the inventors by birthdate, oldest to youngest
+    const e3 = inventors.sort((a, b) => a.year - b.year);
+    console.table(e3);
+
 
     // Array.prototype.reduce()
     // 4. How many years did all the inventors live all together?
+    const e4 = inventors.reduce((totalYear, inventor) => totalYear + (inventor.passed - inventor.year), 0);
+    console.log(e4);
 
     // 5. Sort the inventors by years lived
+    const e5 = inventors.sort((a, b) => (a.passed - a.year - b.passed + b.year));
+    e5.map(inventor => inventor['lived'] = inventor.passed - inventor.year);
+    console.table(e5);
 
     // 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 e7 = people.sort((a, b) => {
+      const [aLast, aFirst] = a.split(', ');
+      const [bLast, bFirst] = b.split(', ');
+      return aLast > bLast ? 1 : -1;
+    });
+    console.log(e7);
 
     // 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 e8 = data.reduce((obj, item) => {
+      if (!obj[item]) {
+        obj[item] = 0;
+      }
+      obj[item]++;
+      return obj;
+    }, {});
+    console.log(e8);
   </script>
 </body>
 </html>
