bloominstituteoftechnology · bcabanayan · Aug 17, 2018 · Aug 17, 2018 · Aug 17, 2018 · Aug 17, 2018
diff --git a/assignments/array-methods.js b/assignments/array-methods.js
@@ -56,28 +56,82 @@ const runners = [{"id":1,"first_name":"Charmain","last_name":"Seiler","email":"c
 // ==== Challenge 1: Use .forEach() ====
 // The event director needs both the first and last names of each runner for their running bibs.  Combine both the first and last names into a new array called fullName. 
 let fullName = [];
+const combineNames = (item) => {
+    fullName.push(item.first_name+' '+item.last_name)
+}
+runners.forEach(combineNames);
 console.log(fullName);
 
 // ==== Challenge 2: Use .map() ====
 // The event director needs to have all the runner's first names converted to uppercase because the director BECAME DRUNK WITH POWER. Convert each first name into all caps and log the result
+
 let allCaps = [];
+const convertUpper = (item) => {
+    return item.first_name.toUpperCase();
+}
+allCaps = runners.map(convertUpper);
 console.log(allCaps); 
 
 // ==== Challenge 3: Use .filter() ====
 // The large shirts won't be available for the event due to an ordering issue.  Get a list of runners with large sized shirts so they can choose a different size. Return an array named largeShirts that contains information about the runners that have a shirt size of L and log the result
+
 let largeShirts = [];
-console.log(largeShirts);
+const sortLarge = (item) => {
+    return item.shirt_size === "L"
+}
+largeShirts = runners.filter(sortLarge);
+console.log(largeShirts); 
 
 // ==== Challenge 4: Use .reduce() ====
 // The donations need to be tallied up and reported for tax purposes. Add up all the donations into a ticketPriceTotal array and log the result
+
 let ticketPriceTotal = [];
+let donations = [];
+for (i = 0; i < runners.length; i++) {
+    donations.push(runners[i].donation);
+}
+const addTotal = (total, num) => {
+    return total + num;
+}
+ticketPriceTotal = donations.reduce(addTotal);
 console.log(ticketPriceTotal);
 
 // ==== Challenge 5: Be Creative ====
 // Now that you have used .forEach(), .map(), .filter(), and .reduce().  I want you to think of potential problems you could solve given the data set and the 5k fun run theme.  Try to solve 3 unique problems using one or many of the array methods listed above.
 
 // Problem 1
 
+//Let's give special recognition to our especially generous donors! Compile a list of all those who donated more than $200.
+
+let superDonors = [];
+const findBigDonors = (item) => {
+    return item.donation > 200;
+}
+superDonors = runners.filter(findBigDonors);
+console.log(superDonors);
+
 // Problem 2
 
-// Problem 3
+//Let's find out how many people who work for Skinix ran in the event.
+
+let skinixEmployees = [];
+const findSkinix = (item) => {
+    return item.company_name === "Skinix";
+}
+skinixEmployees = runners.filter(findSkinix);
+console.log(skinixEmployees.length);
+
+// Problem 3
+
+//Assuming that you spent $5,000 to hold the event, find the profit by summing up the donations and subtracting the cost of the event.
+
+let profit = [];
+let donations = [];
+for (i = 0; i < runners.length; i++) {
+    donations.push(runners[i].donation);
+}
+const sumDonations = (total, num) => {
+    return total + num;
+}
+profit = donations.reduce(sumDonations, -5000);
+console.log(profit);
diff --git a/assignments/callbacks.js b/assignments/callbacks.js
@@ -2,27 +2,33 @@ const items = ['Pencil', 'Notebook', 'yo-yo', 'Gum'];
 
 function firstItem(arr, cb) {
   // firstItem passes the first item of the given array to the callback function.
+  return cb(arr[0]);
 }
 
 function getLength(arr, cb) {
   // getLength passes the length of the array into the callback.
+  return cb(arr.length);
 }
 
 function last(arr, cb) {
   // last passes the last item of the array into the callback.
+  return cb(arr[arr.length - 1]);
 }
 
 function sumNums(x, y, cb) {
   // sumNums adds two numbers (x, y) and passes the result to the callback.
+  return cb(x + y);
 }
 
 function multiplyNums(x, y, cb) {
   // multiplyNums multiplies two numbers and passes the result to the callback.
+  return cb(x * y);
 }
 
 function contains(item, list, cb) {
   // contains checks if an item is present inside of the given array/list.
   // Pass true to the callback if it is, otherwise pass false.
+  return cb(list.includes(item));
 }
 
 /* STRETCH PROBLEM */

diff --git a/assignments/closure.js b/assignments/closure.js
@@ -1,15 +1,32 @@
 // ==== Challenge 1: Write your own closure ====
-// Write a simple closure of your own creation.  Keep it simple!
+const divisibleBy = (x) => {
+  return checkDivisibility = (y) => {
+    return (y % x === 0);
+  } 
+}
 
+let divByFive = divisibleBy(5);
+
+divByFive(100); //returns true
+divByFive(62); //returns false
 
 // ==== Challenge 2: Create a counter function ====
 const counter = () => {
   // Return a function that when invoked increments and returns a counter variable.
+  let count = 0;
+  let addCount = () => {
+    return count = count + 1;
+  }
+  return(addCount);
 };
 // Example usage: const newCounter = counter();
 // newCounter(); // 1
 // newCounter(); // 2
 
+const newCounter = counter();
+newCounter(); // returns 1
+newCounter(); // returns 2
+
 /* STRETCH PROBLEM, Do not attempt until you have completed all previous tasks for today's project files */
 
 // ==== Challenge 3: Create a counter function with an object that can increment and decrement ====

diff --git a/assignments/function-conversion.js b/assignments/function-conversion.js
@@ -1,23 +1,23 @@
 // Take the commented ES5 syntax and convert it to ES6 arrow Syntax
 
-// let myFunction = function () {};
+// let myFunction = () => {};
 
-// let anotherFunction = function (param) {
+// let anotherFunction = (param) => {
 //   return param;
 // };
 
-// let add = function (param1, param2) {
+// let add = (param1, param2) => {
 //   return param1 + param2;
 // };
 // add(1,2);
 
-// let subtract = function (param1, param2) {
+// let subtract = (param1, param2) => {
 //   return param1 - param2;
 // };
 // subtract(1,2);
 
 // exampleArray = [1,2,3,4];
-// const triple = exampleArray.map(function (num) {
+// const triple = exampleArray.map((num) => {
 //   return num * 3;
 // });
 // console.log(triple);