diff --git a/04 - Array Cardio Day 1/index-START.html b/04 - Array Cardio Day 1/index-START.html
index 6e28e357d0..3d792e8fb9 100644
--- a/04 - Array Cardio Day 1/index-START.html
+++ b/04 - Array Cardio Day 1/index-START.html
@@ -27,29 +27,69 @@
// 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));
+ // Nice way to print the collection!
+ // console.table(fifteen);
// Array.prototype.map()
- // 2. Give us an array of the inventory first and last names
+ // 2. Give us an array of the inventors first and last names
+ const fullNames = inventors.map(inventor => (`${inventor.first} ${inventor.last}`));
+ // console.table(fullNames);
// Array.prototype.sort()
// 3. Sort the inventors by birthdate, oldest to youngest
+ const birthDates = inventors.sort(function(a, b) {
+ if(a.year > b.year) {
+ return 1;
+ } else {
+ return -1;
+ }
+ })
+
+ // Oneliner
+ 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((a, b) => ((a.passed - a.year) > (b.passed - b.year) ? -1 : 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');
+ // Need to convert from NodeList to Array
+ // const links = Array.from(category.querySelectorAll('a'));
+ // const de = links
+ // .map(link => (link.textContent))
+ // .filter(streetname => (streetname.includes('de')));
+ // console.table(de);
// 7. sort Exercise
// Sort the people alphabetically by last name
+ const lastNames = people.sort((a, b) => a.split(', ')[0] > b.split(', ')[0] ? 1 : -1);
+ // console.table(lastNames);
// 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);