From 1088c9677808340fb4894e25545c6df2816ebb85 Mon Sep 17 00:00:00 2001
From: martabalbo <marta99.balbo@gmail.com>
Date: Thu, 4 Jun 2026 12:43:32 +0200
Subject: [PATCH 1/2] Add exercises functions

---
 04 - Array Cardio Day 1/index-START.html | 39 ++++++++++++++++++++++++
 1 file changed, 39 insertions(+)

diff --git a/04 - Array Cardio Day 1/index-START.html b/04 - Array Cardio Day 1/index-START.html
index 0dcfd00f40..4c026b74f2 100644
--- a/04 - Array Cardio Day 1/index-START.html	
+++ b/04 - Array Cardio Day 1/index-START.html	
@@ -38,29 +38,68 @@
     
     // 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((a, b) => a.year > b.year ? 1 : -1);
+    
+    console.table(ordered);
 
     // Array.prototype.reduce()
     // 4. How many years did all the inventors live all together?
+    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;
+    } );
+    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('.my-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] = nexttOne.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>
 </html>

From a239877584161dfc0a2db0fd766252e6ac71beee Mon Sep 17 00:00:00 2001
From: martabalbo <marta99.balbo@gmail.com>
Date: Thu, 4 Jun 2026 12:53:26 +0200
Subject: [PATCH 2/2] Add exercises functions

---
 07 - Array Cardio Day 2/index-START.html | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/07 - Array Cardio Day 2/index-START.html b/07 - Array Cardio Day 2/index-START.html
index 4ca34c7536..7f40973663 100644
--- a/07 - Array Cardio Day 2/index-START.html	
+++ b/07 - Array Cardio Day 2/index-START.html	
@@ -28,14 +28,38 @@
     // Some and Every Checks
     // Array.prototype.some() // is at least one person 19 or older?
     // Array.prototype.every() // is everyone 19 or older?
+    const isAdult = people.some(function(person) {
+      const currentYear = (new Date()).getFullYear();
+      if (currentYear - person.year >= 19) {
+        return true;
+      }
+    });
+
+    console.log(isAdult);
+
+    const allAdults = people.every(person => ((new Date()).getFullYear()) - person.year >= 19);
+    console.log({allAdults});
 
     // Array.prototype.find()
     // Find is like filter, but instead returns just the one you are looking for
     // find the comment with the ID of 823423
 
+    //const comment = comments.find(function(comment) {
+      //if  (comment.id == 823423) {
+        //return true;
+      //}
+    //});
+
+    const comment = comments.find(comment => comment.id ===823423);
+    console.log(comment);
+
     // Array.prototype.findIndex()
     // Find the comment with this ID
     // delete the comment with the ID of 823423
+    const index = comments.findIndex(comment => comment.id === 823423);
+    const newComments = [
+      ...comments.slice(0, index), 
+      ...comments.slice(index + 1)];
 
   </script>
 </body>