Add day 4

04 - Array Cardio Day 1/index-START.html

@@ -11,8 +11,7 @@
     // ## Array Cardio Day 1
 
     // Some data we can work with
-
-    const inventors = [
+const inventors = [
       { first: 'Albert', last: 'Einstein', year: 1879, passed: 1955 },
       { first: 'Isaac', last: 'Newton', year: 1643, passed: 1727 },
       { first: 'Galileo', last: 'Galilei', year: 1564, passed: 1642 },
@@ -31,29 +30,66 @@
 
     // 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?
 
-    // 5. Sort the inventors by years lived
+	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 links=Array.from(document.querySelectorAll('.mw-category a'));
+//const de= links.map(link=>link.textContent).filter(streetName=>streetName.include('de'));
+//	console.log(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((obj,item)=>{
+if(!obj[item])obj[item]=0;
+
+obj[item]++;
+	return obj;
+
+},{});
+console.log(transportation);
+
   </script>
 </body>
 </html>