Merge pull request #1 from openwell/timileyin-ojo

SorinC6 · web-flow · commit c25fb3a65e4c · 2019-05-07T23:07:07.000+03:00
added arrray-method solution
diff --git a/assignments/array-methods.js b/assignments/array-methods.js
@@ -1,4 +1,6 @@
-// A local community center is holding a fund raising 5k fun run and has invited 50 small businesses to make a small donation on their behalf for some much needed updates to their facilities.  Each business has assigned a representative to attend the event along with a small donation.
+// A local community center is holding a fund raising 5k fun run and has invited 50 small 
+// businesses to make a small donation on their behalf for some much needed updates to their facilities.  
+// Each business has assigned a representative to attend the event along with a small donation.
 
 // Scroll to the bottom of the list to use some advanced array methods to help the event director gather some information from the businesses.
 
@@ -54,30 +56,75 @@ const runners = [{"id":1,"first_name":"Charmain","last_name":"Seiler","email":"c
 {"id":50,"first_name":"Shell","last_name":"Baine","email":"sbaine1d@intel.com","shirt_size":"M","company_name":"Gabtype","donation":171}];
 
 // ==== 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. 
+// 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 = [];
+runners.forEach((key)=>{
+  fullName.push(`${key.first_name} ${key.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
+// 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 = [];
+allCaps = runners.map(all =>{
+    return all.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
+// 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 = [];
+largeShirts =  runners.filter(all =>{
+    return all.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 = [];
+
+// ticketPriceTotal = runners.reduce((a,b)=> a.donation + b.donation);
+ticketPriceTotal = runners.reduce(function (acc, obj) { return acc + obj.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 create and then solve 3 unique problems using one or many of the array methods listed above.
+// 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 create and then solve 3 unique problems using one or many of the array methods listed above.
 
 // Problem 1
+  let clothPerSize = [];
+  let small =0, medium=0, large=0, xtraLarge=0, xtraSmall=0, xtra2Small=0, xtra3Small = 0;
 
+  runners.forEach((key)=>{
+    if(key.shirt_size === 'S'){
+        small += 1;
+    }
+    if(key.shirt_size === 'M'){
+        medium += 1;
+    }
+    if(key.shirt_size === 'L'){
+        large += 1;
+    }
+    if(key.shirt_size === 'XL'){
+        xtraLarge += 1;
+    }
+    if(key.shirt_size === 'XS'){
+        xtraSmall += 1;
+    }
+    if(key.shirt_size === '2XL'){
+        xtra2Small += 1;
+    }
+    if(key.shirt_size === '3XL'){
+        xtra3Small += 1;
+    }
+  })
+//   clothPerSize.push({small: small, medium: medium, large: large, xtraLarge: xtraLarge, xtra2Small: xtra2Small, xtra3Small:xtra3Small})
+  console.log(small, medium, large, xtraLarge, xtraSmall, xtra2Small, xtra3Small);
 // Problem 2
 
 // Problem 3
diff --git a/assignments/callbacks.js b/assignments/callbacks.js
@@ -1,6 +1,8 @@
-// Create a higher order function and invoke the callback function to test your work. You have been provided an example of a problem and a solution to see how this works with our items array.  Study both the problem and the solution to figure out the rest of the problems.
+// Create a higher order function and invoke the callback function to test your work. 
+// You have been provided an example of a problem and a solution to see how this works with our items array.  
+// Study both the problem and the solution to figure out the rest of the problems.
 
-const items = ['Pencil', 'Notebook', 'yo-yo', 'Gum'];
+const items = ["Pencil", "Notebook", "yo-yo", "Gum"];
 
 /* 
 
@@ -24,27 +26,52 @@ const items = ['Pencil', 'Notebook', 'yo-yo', 'Gum'];
 
 */
 
-
 function getLength(arr, cb) {
   // getLength passes the length of the array into the callback.
+   return cb(arr.length);
 }
 
+getLength(items, function(first) {
+  console.log(first)
+});
+
 function last(arr, cb) {
+   const lengthOfArray = arr.length -1;
+   return cb(arr[lengthOfArray]);
   // last passes the last item of the array into the callback.
 }
+last(items, function(first) {
+  console.log(first)
+});
 
 function sumNums(x, y, cb) {
   // sumNums adds two numbers (x, y) and passes the result to the callback.
+  const additionOfVariable = x + y;
+  return cb(additionOfVariable);
 }
 
+sumNums( 2, 4, function(first) {
+  console.log(first)
+});
+
 function multiplyNums(x, y, cb) {
+  const multiplyOfVariable = x * y;
+  return cb(multiplyOfVariable);
   // multiplyNums multiplies two numbers and passes the result to the callback.
 }
+multiplyNums( 2, 4, function(first) {
+  console.log(first)
+});
 
 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))
 }
+contains( 'Pencil', items, function(first) {
+  console.log(first);
+});
+
 
 /* STRETCH PROBLEM */
 
diff --git a/assignments/closure.js b/assignments/closure.js
@@ -1,21 +1,53 @@
 // ==== Challenge 1: Write your own closure ====
 // Write a simple closure of your own creation.  Keep it simple!
-
+const addTwoNumbers = (a,b)=>{
+  return function(){
+  let initial = a + b;
+  console.log(initial)
+  }
+}
+const newAddTwoNumbers  = addTwoNumbers (3,4);
+newAddTwoNumbers ();
 
 /* STRETCH PROBLEMS, Do not attempt until you have completed all previous tasks for today's project files */
 
-
 // ==== Challenge 2: Create a counter function ====
 const counter = () => {
   // Return a function that when invoked increments and returns a counter variable.
+  let initial = 0;
+  return function() {
+    initial += 1;
+    console.log(initial);
+  };
 };
 // Example usage: const newCounter = counter();
-// newCounter(); // 1
-// newCounter(); // 2
+
+const newCounter = counter();
+newCounter();
+newCounter();
 
 // ==== Challenge 3: Create a counter function with an object that can increment and decrement ====
+
 const counterFactory = () => {
+  let initial = 0;
+  const factoryObj = {
+    increment: function() {
+      initial += 1;
+      console.log(initial);
+    },
+    decrement: function() {
+      initial -= 1;
+      console.log(initial);
+    }
+  };
+  return factoryObj;
   // Return an object that has two methods called `increment` and `decrement`.
   // `increment` should increment a counter variable in closure scope and return it.
   // `decrement` should decrement the counter variable and return it.
 };
+
+const newCounterFactory = counterFactory();
+
+
+
+
