separated exercises.js onto its own branch

03week/exercises.js

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+'use strict'
+
+// 1. Create array 'cars' with 4 different types of cars & console.log:
+let cars = ['Ford', 'Lotus', 'Renault', 'Peugeot'];
+console.log(cars);
+
+//2. Create array 'morecars' with 4 more types of cars and concat with cars:
+let moreCars = ['Pagani', 'Porsche', 'Audi', 'Honda'];
+let totalCars = cars.concat(moreCars);
+
+//3. console.log the indexOf 'Honda' and lastIndexOf 'Ford':
+console.log(totalCars.indexOf('Honda'));
+console.log(totalCars.lastIndexOf('Ford'));
+
+//4. Use join method to convert the array totalCars to a string:
+let stringOfCars = totalCars.join(' ');
+console.log(stringOfCars);
+
+//5. Use split method to convert stringOfCars back to an array:
+totalCars = stringOfCars.split(' ');
+
+//6. Use reverse method to create an array carsInReverse from totalCars:
+let carsInReverse = totalCars.reverse();
+
+//7: Use sort method to put carsInReverse in alphabetical order:
+carsInReverse.sort();
+// prediction: 'Audi' is in index 0:
+console.log(carsInReverse.indexOf('Audi'));
+
+//8. Use slice method to remove Ford and Honda from carsInReverse,
+// and move them into a new array removedCars:
+let removedCars =  carsInReverse.slice(1, 3);
+console.log(removedCars);
+
+//9. Use splice method to remove 2nd and 3rd items in carsInReverse & replace them with 'Ford' and 'Honda' (which is weird because the 2nd and 3rd items are already Ford and Honda...):
+carsInReverse.splice(1, 2, 'Ford', 'Honda');
+console.log(carsInReverse);
+
+//10. Use push method to add the types of cars removed using splice method to carsInReverse:
+carsInReverse.push('Ford', 'Honda');
+console.log(carsInReverse);
+
+//11. Use pop method to remove and console.log the last item in carsInReverse:
+console.log(carsInReverse.pop());
+
+//12. Use shift method to remove and console.log the first item in carsInReverse:
+console.log(carsInReverse.shift());
+
+//13. Use the unshift method to add a new type of car to the beginning of carsInReverse:
+carsInReverse.unshift('Volkswagen');
+console.log(carsInReverse);
+
+//14. Create an array called numbers with the following items: 23, 45, 0, 2, write code that will add 2 to each item in the array numbers.
+let numbers = [ 23, 45, 0, 2 ];
+for(let x in numbers){
+    numbers[x] += 2;
+    console.log(numbers[x]);
+}