array cardio day 1

4-array-cardio-day1/index.html

@@ -26,22 +26,83 @@
         { first: 'Hanna', last: 'Hammarström', year: 1829, passed: 1909 }
     ];
     const people = ['Beck, Glenn', 'Becker, Carl', 'Beckett, Samuel', 'Beddoes, Mick', 'Beecher, Henry', 'Beethoven, Ludwig', 'Begin, Menachem', 'Belloc, Hilaire', 'Bellow, Saul', 'Benchley, Robert', 'Benenson, Peter', 'Ben-Gurion, David', 'Benjamin, Walter', 'Benn, Tony', 'Bennington, Chester', 'Benson, Leana', 'Bent, Silas', 'Bentsen, Lloyd', 'Berger, Ric', 'Bergman, Ingmar', 'Berio, Luciano', 'Berle, Milton', 'Berlin, Irving', 'Berne, Eric', 'Bernhard, Sandra', 'Berra, Yogi', 'Berry, Halle', 'Berry, Wendell', 'Bethea, Erin', 'Bevan, Aneurin', 'Bevel, Ken', 'Biden, Joseph', 'Bierce, Ambrose', 'Biko, Steve', 'Billings, Josh', 'Biondo, Frank', 'Birrell, Augustine', 'Black, Elk', 'Blair, Robert', 'Blair, Tony', 'Blake, William'];
+
+
     // Array.prototype.filter()
     // 1. Filter the list of inventors for those who were born in the 1500's
-    // Array.prototype.map()
+    const fifteen = inventors.filter(inventor => (inventor.year >= 1500 && inventor.year <= 1600)) // inventor filter + arrow function with condition 
+    console.table(fifteen);
+
+    // Array.prototype.map() // ( .map takes in an array, it does something with that array and then it returns a new array with the same length)
     // 2. Give us an array of the inventors' first and last names
+    const fullNames = inventors.map(inventor => `${inventor.first} ${inventor.last}`); // map + template strings 
+    console.table(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;
+        }
+    });
+
+    <=> 
+
+    */
+    const ordered = inventors.sort((a,b) => a.year > b.year ? 1 : -1) // arrow function with ternary for sort in a particular order
+    console.table(ordered); 
+
+
     // Array.prototype.reduce()
     // 4. How many years did all the inventors live?
-    // 5. Sort the inventors by years lived
+    const totalYears = inventors.reduce((total, inventor) => {
+        return total + (inventor.passed - inventor.year);
+    }, 0); // pas de tota laiu début, on commence avec 0
+
+    console.log(totalYears);
+    // 5. Sort the inventors by years lived /// TO CHECK
+    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('.mw-category'); // on va sélectionner l'élément souhaité du site
+    const links = Array.from(category.querySelectorAll('a')); // on va sélectionner le link url de chaque élément de 'category'
+    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((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>
 </html>