bloominstituteoftechnology · verydecent · Aug 7, 2018 · Aug 7, 2018 · Aug 7, 2018 · Aug 7, 2018
diff --git a/assignments/array-methods.js b/assignments/array-methods.js
@@ -55,29 +55,86 @@ 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 = [];
+let fullName = runners.forEach(function(element, index) {
+    element["first_name"] + " " + element["last_name"];
+});
 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 = [];
+let allCaps = runners.map(function(x) {
+    x.first_name.toUpperCase(); 
+});
 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 = [];
+let largeShirts = runners.filter(function(x) {
+    if(x.shirt_size === "L";
+});
 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 ticketPriceTotal = runners.reduce((reducer, runner) => {
+    return reducer += runner.donation;
+}, 0);
 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
+// We need an email list of all Runners to send out annual reminders for our marathon event. Collect all runner's emails.
+let emailList = [];
+
+runners.forEach(function(participant) {
+    emailList.push(participant["donation"]);
+});
+
+console.log(emailList);
 
 // Problem 2
+// This year, we are splitting the runners into two teams to see which teams time is the fastest. Place even id numbered runners in teamBlue and odd id numbered runners into teamRed.
+
+let teamBlue = [];
+let teamRed = [];
+
+runners.filter(function(participant) {
+    if(participant.id % 2 === 0) {
+        teamBlue.push(participant);
+    } else {
+        teamRed.push(participant);
+    }
+})
+
+console.log(teamBlue);
+console.log(teamRed);
+
+// Problem 3
+// This year we are making acknowledgements to businesses who donated an oustanding amount to the marathon. If donators donated more than 200, collect their information into the mvpDonator array.
+
+let superNova= [];
+let theFlash = [];
+let babyCheetah = [];
+
+runners.filter(function(participant) {
+    if(participant.donation >= 200) {
+        superNova.push(participant);
+    } else if(participant.donation >= 100) {
+        theFlash.push(participant);
+    } else {
+        babyCheetah.push(participant)
+    }
+})
 
-// Problem 3
+console.log(superNova);
+console.log(theFlash);
+console.log(babyCheetah);
diff --git a/assignments/callbacks.js b/assignments/callbacks.js
@@ -1,30 +1,88 @@
 const items = ['Pencil', 'Notebook', 'yo-yo', 'Gum'];
 
+// Made PR
+
 function firstItem(arr, cb) {
   // firstItem passes the first item of the given array to the callback function.
+  return cb(arr);
+}
+
+function firstIndex(items) {
+  return (items[0]);
 }
 
+firstItem(items, firstIndex);
+
+//
+
 function getLength(arr, cb) {
-  // getLength passes the length of the array into the callback.
+    // getLength passes the length of the array into the callback.
+  cb(arr);
+}
+
+function arrLength(items) {
+  return items.length;
 }
 
+getLength(items, arrLength);
+
+//
+
 function last(arr, cb) {
-  // last passes the last item of the array into the callback.
+    // last passes the last item of the array into the callback.
+  cb(lastIndex);
 }
 
+function lastIndex(items) {
+  return items[items.length - 1];
+}
+
+last(items, lastIndex);
+
+//
+
 function sumNums(x, y, cb) {
   // sumNums adds two numbers (x, y) and passes the result to the callback.
+  cb(x, y);
+}
+
+function sum (a, b) {
+  return a + b;
 }
 
+sumNums(2, 4, sum);
+
+//
+
 function multiplyNums(x, y, cb) {
   // multiplyNums multiplies two numbers and passes the result to the callback.
+  cb(x, y);
+}
+
+function multiply(a, b) {
+  return a * b;
 }
 
+multiplyNums(5, 5, multiply);
+
+//
+
 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.
+    cb(item, list);
 }
 
+function listChecker(item, list) {
+  for(let i = 0; i < list.length; i++) {
+    if(item === list[i]) {
+      return true;
+    }
+  }
+}
+
+contains('Pencil', items, listChecker);
+
 /* STRETCH PROBLEM */
 
 function removeDuplicates(array, cb) {

diff --git a/assignments/closure.js b/assignments/closure.js
@@ -1,11 +1,34 @@
 // ==== Challenge 1: Write your own closure ====
 // Write a simple closure of your own creation.  Keep it simple!
 
+function person() {
+  var name = "Wonjae";
+  function anotherPerson() {
+    console.log("My name is " + name + " too!");
+  }
+  anotherPerson();
+}
+
+console.log(person());
+
 
 // ==== Challenge 2: Create a counter function ====
 const counter = () => {
+  let count = 0;
+  return() => (++count);
+
   // Return a function that when invoked increments and returns a counter variable.
+
 };
+
+const outsideCounter = counter();
+console.log(outsideCounter());
+console.log(outsideCounter());
+console.log(outsideCounter());
+
+
+
+
 // Example usage: const newCounter = counter();
 // newCounter(); // 1
 // newCounter(); // 2

diff --git a/assignments/function-conversion.js b/assignments/function-conversion.js
@@ -6,18 +6,26 @@
 //   return param;
 // };
 
+let anotherFunction (param) => return param
+
 // let add = function (param1, param2) {
 //   return param1 + param2;
 // };
 // add(1,2);
 
+let add = (param1, param2) => param1 + param2;
+
 // let subtract = function (param1, param2) {
 //   return param1 - param2;
 // };
 // subtract(1,2);
 
+let subtract = (param1, param2) => param1 - param2;
+
 // exampleArray = [1,2,3,4];
 // const triple = exampleArray.map(function (num) {
 //   return num * 3;
 // });
-// console.log(triple);
+// console.log(triple);
+
+const triple = exampleArray.map(number => number * 3);