dfieker · dfieker · Nov 15, 2019 · Nov 15, 2019 · Nov 15, 2019 · Nov 15, 2019
diff --git a/challenges/classes.js b/challenges/classes.js
@@ -1,7 +1,32 @@
 // 1. Copy and paste your prototype in here and refactor into class syntax.
 
+class CuboidMaker {
+constructor(attributes) {
+    this.length = attributes.length;
+    this.width = attributes.width;
+    this.height = attributes.height;
+  }
+
+    volume() {
+    return `${this.length} * ${this.width} * ${this.height}`;
+  }
+    surfaceArea() {
+    return `2 * (${this.length} * ${this.width} + ${this.length} * ${this.height} + ${this.width} * ${this.height})`;
+  }
+}
+
+const cuboid = new CuboidMaker({
+    length: 4,
+    width: 5,
+    height: 5
+  });
+
+
+
+
 // Test your volume and surfaceArea methods by uncommenting the logs below:
-// console.log(cuboid.volume()); // 100
-// console.log(cuboid.surfaceArea()); // 130
+console.log(cuboid.volume()); // 100
+console.log(cuboid.surfaceArea()); // 130
+
+// Stretch Task: Extend the base class CuboidMaker with a sub class called CubeMaker.  Find out the formulas for volume and surface area for cubes and create those methods using the dimension properties from CuboidMaker.  Test your work by logging out your volume and surface area.
 
-// Stretch Task: Extend the base class CuboidMaker with a sub class called CubeMaker.  Find out the formulas for volume and surface area for cubes and create those methods using the dimension properties from CuboidMaker.  Test your work by logging out your volume and surface area.
diff --git a/challenges/functions.js b/challenges/functions.js
@@ -7,26 +7,40 @@
   * The consume function should return the invocation of cb, passing a and b into cb as arguments
 */
 
+function consume (a, b, cb) {
+  return cb(a, b);
+}
 
 /* Step 2: Create several functions to callback with consume();
   * Create a function named add that returns the sum of two numbers
   * Create a function named multiply that returns the product of two numbers 
   * Create a function named greeting that accepts a first and last name and returns "Hello first-name last-name, nice to meet you!"
 */
 
+function add (num1, num2) {
+  return num1 + num2;
+}
+
+function multiply (num1, num2) {
+  return num1 * num2;
+}
+
+function greeting (firstName, lastName) {
+  return `Hello ${firstName} ${lastName}, nice to meet you!`
+}
 
 /* Step 3: Check your work by un-commenting the following calls to consume(): */
-// console.log(consume(2, 2, add)); // 4
-// console.log(consume(10, 16, multiply)); // 160
-// console.log(consume("Mary", "Poppins", greeting)); // Hello Mary Poppins, nice to meet you!
+console.log(consume(2, 2, add)); // 4
+console.log(consume(10, 16, multiply)); // 160
+console.log(consume("Mary", "Poppins", greeting)); // Hello Mary Poppins, nice to meet you!
+
 
 
 // ==== Closures ==== 
 
 // Explain in your own words why nestedfunction can access the variable internal.
 
-// Explanation: 
-
+// Explanation: It can access the variable internal because it lies in the same function scope as the variable internal.
 
 const external = "I'm outside the function";
 

diff --git a/challenges/objects-arrays.js b/challenges/objects-arrays.js
@@ -7,30 +7,50 @@
 */
 
 // tyrannosaurus, carnivorous, 7000kg, 12m, Late Cretaceous
-
+const dino1 = {
+  objName: "tyrannosaurus",
+  diet: "carnivorous",
+  weight: "7000kg",
+  length: "12m",
+  period: "Late Cretaceous"
+}
 // stegosaurus, herbivorous, 2000kg, 9m, Late Jurassic
-
+const dino2 = {
+  objName: "stegosaurus",
+  diet: "herbivorous",
+  weight: "2000kg",
+  length: "9m",
+  period: "Late Jurassic"
+}
 // velociraptor, carnivorous, 15kg, 1.8m, Late Cretaceous
-
+const dino3 = {
+  objName: "velociraptor",
+  diet: "carnivorous",
+  weight: "15kg",
+  length: "1.8m",
+  period: "Late Cretaceous",
+  roar: "RAWERSRARARWERSARARARRRR!"
+}
 // Using your dinosaur objects, log answers to these questions:
 
 // How much did tyrannosaurus weigh?
-console.log();
+console.log(dino1.weight);
 
 // What was the diet of a velociraptor?
-console.log();
+console.log(dino3.diet);
 
 // How long was a stegosaurus?
-console.log();
+console.log(dino2.length);
 
 // What time period did tyrannosaurus live in?
-console.log();
+console.log(dino1.period);
 
 
 // Create a new roar method for the tyrannosaurus.  When called, return "RAWERSRARARWERSARARARRRR!" Log the result.
-console.log();
 
+console.log(dino3.roar);
 
+console.log('###########EndofObjects##############');
 // ==== Arrays ====
 
 // Given an array of college graduates.  Complete the following requests using any array method you like
@@ -51,7 +71,14 @@ const graduates = [
 /* Request 1: Create a new array called universities that contains all the universities in the graduates array. This will be an array of strings.
 
 Once you have the new array created, sort the universities alphabetically and log the result. */
+
 const universities = [];
+for(let i=0; i < graduates.length; i++) {
+  if(graduates[i].university) {
+    universities.push(graduates[i].university);
+  }
+  universities.sort();
+}
 console.log(universities);
 
 /* Request 2: Create a new array called contactInfo that contains both first name and email of each student. This will be an array of strings.
@@ -60,8 +87,9 @@ The resulting contact information strings should have a space between the first
 "Josh [email protected]"
 
 Log the result of your new array. */
-const contactInfo = [];
-console.log(contactInfo);
+// const contactInfo = []; {
+  // return graduates.map(graduates.first_name, graduates.email)};
+// console.log(contactInfo);
 
 /* Request 3: Find out how many universities have the string "Uni" included in their name. Create a new array called unisWithUni that contains them all. This will be an array of objects. Log the result. */
 const unisWithUni = [];
@@ -91,6 +119,7 @@ The zoos want to display both the scientific name and the animal name in front o
 
 */
 const displayNames = [];
+displayNames.forEach
 console.log(displayNames);
 
 /* Request 2: .map()
@@ -116,7 +145,8 @@ The zoos need to know their total animal population across the United States. Fi
 
 */
 const populationTotal = 0;
-console.log(populationTotal);
+const reducer = (accumulator, currentValue) => accumulator + currentValue;
+console.log(populationTotal.reducer());
 
 
 /*

diff --git a/challenges/prototypes.js b/challenges/prototypes.js
@@ -5,26 +5,40 @@
 /* == Step 1: Base Constructor ==
   Create a constructor function named CuboidMaker that accepts properties for length, width, and height
 */
-
+// function CuboidMaker (attributes) {
+//   this.length = attributes.length;
+//   this.width = attributes.width;
+//   this.height = attributes.height;
+// }
 
 /* == Step 2: Volume Method ==
   Create a method using CuboidMaker's prototype that returns the volume of a given cuboid's length, width, and height
 
   Formula for cuboid volume: length * width * height
 */
-
-
-/* == Step 3: Surface Area Method ==
-  Create another method using CuboidMaker's prototype that returns the surface area of a given cuboid's length, width, and height. 
-
-  Formula for cuboid surface area of a cube: 2 * (length * width + length * height + width * height)
-*/
-
-
-/* == Step 4: Create a new object that uses CuboidMaker ==
-  Create a cuboid object that uses the new keyword to use our CuboidMaker constructor
-  Add properties and values of length: 4, width: 5, and height: 5 to cuboid.   
-*/
+// CuboidMaker.prototype.volume = function () {
+//   return `${this.length} * ${this.width} * ${this.height}`;
+// }
+
+// /* == Step 3: Surface Area Method ==
+//   Create another method using CuboidMaker's prototype that returns the surface area of a given cuboid's length, width, and height. 
+
+//   Formula for cuboid surface area of a cube: 2 * (length * width + length * height + width * height)
+// */
+// CuboidMaker.prototype.surfaceArea = function () {
+//   return `2 * (${this.length} * ${this.width} + ${this.length} * ${this.height} + ${this.width} * ${this.height})`;
+// }
+
+// /* == Step 4: Create a new object that uses CuboidMaker ==
+//   Create a cuboid object that uses the new keyword to use our CuboidMaker constructor
+//   Add properties and values of length: 4, width: 5, and height: 5 to cuboid.   
+// */
+
+// const cuboid = new CuboidMaker({
+//   length: 4,
+//   width: 5,
+//   height: 5
+// });
 
 // Test your volume and surfaceArea methods by uncommenting the logs below:
 // console.log(cuboid.volume()); // 100

diff --git a/package-lock.json b/package-lock.json