sagar desai

assignments/array-methods.js

@@ -56,28 +56,74 @@ 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 = [];
+//console.log(fullName);
+runners.forEach(function(element) {
+  fullName.push(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 = [];
+// console.log(allCaps); 
+// fullName.forEach(function(element){
+//   allCaps.push(element.toUpperCase());
+// })
+allCaps = fullName.map(el => el.toUpperCase());
 console.log(allCaps); 
 
-// ==== Challenge 3: Use .filter() ====
+// ==== 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 = [];
+// runners.forEach(function(element){
+//   largeShirts.push()
+// })
+largeShirts = runners.filter(el => el.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 = [];
-console.log(ticketPriceTotal);
+ticketArr = runners.map(el => el.donation)
+console.log(ticketArr);
+ticketPriceTotal = (accumulator, current) => accumulator + current;
+console.log(ticketArr.reduce(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
+// Problem 1: Show a list of all the companies being represented by the runners.
+let corpList = [];
+corpList = runners.map(el => el.company_name);
+console.log("#1");
+console.log(corpList.sort());
 
-// Problem 2
+// Problem 2: Break down donations into categories: 0-100, 100-200, etc.
+let donorLevels = {"bronze": 0, "silver": 0,"gold": 0, "platinum": 0};
+runners.forEach(function(el){
+  if (el.donation <= 100){
+    donorLevels["bronze"] += 1;
+  } else if (el.donation <= 200 && el.donation > 100){
+    donorLevels["silver"] += 1;
+  } else if (el.donation <= 300 && el.donation > 200){
+    donorLevels["gold"] += 1;
+  } else if (el.donation > 300){
+    donorLevels["platinum"] += 1;
+  }
+})
+console.log(donorLevels);
 
-// Problem 3
+// Problem 3: Any duplicated first names?
+let nameBadgeDuplicates = [];
+let nameCounts = {};
+let firstNames = runners.map(el => el.first_name);
+console.log(firstNames);
+firstNames.forEach(function(el){
+  console.log(el);
+  if (nameCounts[el] != true){
+    nameCounts[el] = 1;
+  } else if (nameCounts[el] == true){
+    nameCounts[el] += 1;
+  }
+})
+console.log(nameCounts);

assignments/closure.js

@@ -1,19 +1,43 @@
 // ==== Challenge 1: Write your own closure ====
 // Write a simple closure of your own creation.  Keep it simple!
-
+let scoot = "Ride sharing service in SF for electric scooters";
+function whatIsScoot(){
+  return scoot;
+}
+console.log(whatIsScoot());
 
 // ==== Challenge 2: Create a counter function ====
-const counter = () => {
+const counter = (closure = 0) => {
   // Return a function that when invoked increments and returns a counter variable.
+  let val = closure;
+  return function counter(){
+    val += 1;
+    console.log(val);
+    return val;
+  }
 };
+const newCounter = counter();
 // Example usage: const newCounter = counter();
-// newCounter(); // 1
-// newCounter(); // 2
+newCounter(); // 1
+newCounter(); // 2
 
 
 // ==== Challenge 3: Create a counter function with an object that can increment and decrement ====
 const counterFactory = () => {
   // Return an object that has two methods called `increment` and `decrement`.
+  let counter = 0;
+  console.log(counter);
+  let increment = () => counter += 1;
+  let decrement = () => counter -= 1;
+  let resObj = {increment , decrement};
   // `increment` should increment a counter variable in closure scope and return it.
+
   // `decrement` should decrement the counter variable and return it.
+  return resObj;
+
 };
+  let foo = counterFactory();
+
+  console.log(foo.decrement());
+  console.log(foo.increment());
+  // return resObj;

assignments/function-conversion.js

@@ -1,23 +1,29 @@
 // Take the commented ES5 syntax and convert it to ES6 arrow Syntax
 
 // let myFunction = function () {};
+let myFunction = ((el) => (el));
 
 // let anotherFunction = function (param) {
 //   return param;
 // };
-
+  let anotherFunction = ((param) => param); 
+  console.log(anotherFunction("hello"));
 // let add = function (param1, param2) {
 //   return param1 + param2;
 // };
-// add(1,2);
+  let add = ((param1, param2) => param1 + param2);
+  console.log(add(1,2));
 
 // let subtract = function (param1, param2) {
 //   return param1 + param2;
 // };
-// subtract(1,2);
+  let subtract = ((param1, param2) => param1 - param2);
+  console.log(subtract(1,2));
 
 exampleArray = [1,2,3,4];
+
 // const triple = exampleArray.map(function (num) {
 //   return num * 3;
 // });
-// console.log(triple);
+const triple = exampleArray.map(num => num * 3);
+console.log(triple);