Scotland Class 5 - Peter Armstrong - JS core 2 week 1

mandatory/1-writers.js

@@ -67,8 +67,13 @@ Exercise 1:
   "Hi, my name is {firstName} {lastName}. I am {age} years old, and work as a {occupation}."
 */
 function logAllWriters() {
-  // write your code to log all writers here
+  writers.forEach((writer) => {
+  console.log(`Hi, my name is ${writer.firstName} ${writer.lastName}. I am ${writer.age} years old, and work as a ${writer.occupation}.`);
+  });
 };
+
+
+
 
 /*
 Exercise 2:
@@ -80,7 +85,10 @@ Exercise 2:
 */
 
 function logDeadWritersInTheirForties() {
-  // write your code here
+  writers.forEach((writer) => {
+    if (writer.age >= 40 && writer.age <= 49 && !writer.alive) {console.log(`Writer ${writer.firstName} ${writer.lastName} died at ${writer.age} years old.`)
+  }
+  });
 }
 
 /*
@@ -92,7 +100,11 @@ Exercise 3:
 */
 
 function logAliveWritersInTheirForties() {
-  // write your code here
+  writers.forEach((writer) => {
+    if (writer.age >= 40 && writer.age <= 49 && writer.alive) {
+      console.log(`Hi, my name is ${writer.firstName} ${writer.lastName}. I am ${writer.age} years old.`);
+    }
+  });
 }
 
 /* ======= TESTS - DO NOT MODIFY ===== 

mandatory/10-cheap-diner.js

@@ -30,6 +30,15 @@ Should give the answer "Nothing :("
 **/
 
 function chooseMeal(mealArray) {
+  mealArray.sort((mealA, mealB) => mealA.price - mealB.price);
+
+  const secondCheapest = mealArray[1];
+  const cheapest = mealArray[0];
+  const noMeal = "Nothing :(";
+
+  if (secondCheapest) return secondCheapest.name;
+  else if (cheapest) return cheapest.name;
+  else return noMeal;
 }
 
 /* ======= TESTS - DO MODIFY (!!!) =====

mandatory/2-eligible-students.js

@@ -20,7 +20,15 @@
  */
 
 function eligibleStudents(attendances) {
-
+   return attendances.filter(isEligible).map(getName);
+}
+
+function getName (student){
+  return student.name;
+}
+
+function isEligible(student){
+  return student.attendance >= 8;
 }
 
 /* ======= TESTS - DO NOT MODIFY ===== 

mandatory/3-journey-planner.js

@@ -27,7 +27,8 @@
 */
 
 function journeyPlanner(locations, transportMode) {
-
+  return Object.keys(locations)
+    .filter(location => locations[location].includes(transportMode));
 }
 
 /* ======= TESTS - DO NOT MODIFY ===== 

mandatory/4-water-bottle.js

@@ -22,20 +22,23 @@ You have to implement the missing features according to the specification.
 // Here is your starting point:
 let bottle = {
   volume: 0,
+  fullCap: 100,
   fillUp: function () {
-    // calling this function should completely fill your bottle (volume = 100);
+    if (!this.isFull()) this.volume = this.fullCap;
   },
   pour: function () {
-    // calling this function should increase your bottle volume by 10 units;
+   const tenDrinkUnits = 10;
+   if (!this.isFull()) this.volume += tenDrinkUnits;
   },
   drink: function () {
-    // calling this function should decrease your bottle volume by 10 units;
+    const tenDrinkUnits = 10;
+    if (!this.isEmpty()) this.volume -= tenDrinkUnits;
   },
   isFull: function () {
-    // this function should return true if your bottle is full;
+    return this.volume === this.fullCap;
   },
   isEmpty: function () {
-    // this function should return true if your bottle is empty;
+    return this.volume === 0;
   },
 };
 
@@ -51,7 +54,7 @@ Extra question:
   Leave your answer below:
 */
 
-// Write you answer to the question here
+//I think it has to do with scope bottle can only be used inside this function this can be used outside if needed.
 
 /*
 Once you have completed your object run the following 

mandatory/5-groceries.js

@@ -29,13 +29,25 @@ Exercise 1:
 */
 // Gather all week item names into this array
 let weeklyGroceriesToBuy = [];
+  Object.values(weeklyMealPlan).forEach((ingredientsForDay) => {
+    ingredientsForDay.forEach((ingredient) => {
+      if (!weeklyGroceriesToBuy.includes(ingredient)) weeklyGroceriesToBuy.push(ingredient);
+    });
+  });
 
 /*
 Exercise 2:
   Loop through your list again, but now only collect the weekend items into the weekendGroceriesToBuy array.
 */
 // Gather weekend item names into this array
 let weekendGroceriesToBuy = [];
+  Object.entries(weeklyMealPlan).forEach((keyValuePair) => {
+    const day = keyValuePair[0];
+    const ingredientsForDay = keyValuePair[1];
+    if (day === "saturday" || day === "sunday") {
+      weekendGroceriesToBuy = weekendGroceriesToBuy.concat(ingredientsForDay);
+    }
+  });
 
 /*
 Exercise 3:
@@ -54,6 +66,10 @@ let numberOfItemsPerWeek = {
   sunday: 0,
 };
 
+Object.entries(weeklyMealPlan).forEach(([day, ingredientsForDay]) => {
+  numberOfItemsPerWeek[day] = ingredientsForDay.length;
+});
+
 /* ======= TESTS - DO NOT MODIFY ===== 
 - To run the tests for this exercise, run `npm test -- --testPathPattern 5-groceries.js`
 - To run all exercises/tests in the mandatory folder, run `npm test`

mandatory/6-people-I-know.js

@@ -382,7 +382,11 @@ First, I want you to find all of my friends who are 35 or older.
 
 */
 
-let thirtyFiveOrOlder = [];
+let thirtyFiveOrOlder = friends
+  .filter(function (friend) {
+    const lowerAge = 35;
+    return friend.age >= lowerAge;
+  });
 
 /*
 3) Find the email address
@@ -391,7 +395,14 @@ Next, I want you to find all of my friends who work for "POWERNET" and then stor
 
 */
 
-let powerNetEmails = [];
+let powerNetEmails = friends
+  .filter(function (friend) {
+    const companySearch = "POWERNET";
+    return friend.company === companySearch;
+  })
+  .map(function (friend) {
+    return friend.email;
+  });
 
 /*
 
@@ -405,7 +416,16 @@ This time, I only want the full names ("<firstname> <lastname>") of my friends w
 
 */
 
-let friendsWhoAreColleaguesOfStacie = [];
+let friendsWhoAreColleaguesOfStacie = friends
+  .filter(function isColleagueWithStacie(person) {
+    const colleagueToFind = "Stacie Villarreal";
+    return person.colleagues.some((colleague) => colleague.name === colleagueToFind);
+  })
+  .map(function getName(colleague) {
+    const firstName = colleague.name.first;
+    const lastName = colleague.name.last;
+    return `${firstName} ${lastName}`;
+  });
 /*
 
 5) Find "Multi-tasking" colleagues
@@ -419,6 +439,16 @@ This time, I only want the full names of the people who can multitask
 */
 
 let colleaguesWhoCanMultitask = [];
+friends
+  .map((person) => person.colleagues)
+  .forEach((colleagueList) => {
+    const thoseWhoMultiTask = colleagueList.filter((colleague) => {
+      const wantedTask = "Multi-tasking";
+      return colleague.skills.includes(wantedTask);
+    });
+    const fullNames = thoseWhoMultiTask.map((colleague) => colleague.name);
+    colleaguesWhoCanMultitask = colleaguesWhoCanMultitask.concat(fullNames);
+  });
 
 /* ======= TESTS - DO NOT MODIFY ===== 
 - To run the tests for this exercise, run `npm test -- --testPathPattern 6-people-I-know.js`

mandatory/7-recipes.js

@@ -24,5 +24,24 @@ You should write and log at least 5 recipes
 
 **/
 
-let recipes = {};
+let recipes = {
+    title: "Apple Pie",
+    servings: 3,
+    ingredients: [
+        "Granulated Sugar",
+        "Thinly Sliced Apples",
+        "Butter",
+        "Cinnamon",
+        "Double Flake Pastry",
+        "Chubby Sparkling Sugar",
+    ],
+};
+
+console.log(recipe.title);
+console.log(`Serves ${recipe.servings}`);
+console.log("Ingredients:");
+
+recipe.ingredients.forEach(function (ingredient) {
+    console.log(ingredient);
+});
 

mandatory/8-reading-list.js

@@ -24,11 +24,40 @@ without using any variables or any logic like loops, template strings or if stat
 
 */
 
-const books = [];
+const books = [
+  {
+    title: "The Shining",
+    author: "Stephen King",
+    haveRead: true,
+  },
+  {
+    title: "Tommyknockers",
+    author: "Stephen King",
+    haveRead: true,
+  },
+  {
+    title: "Prey",
+    author: "Micheal Crichton",
+    haveRead: true,
+  },
+  {
+    title: "Jurassic Park",
+    author: "Micheal Crichton",
+    haveRead: true,
+  },
+  {
+    title: "Mr Mercedes",
+    author: "Stephen King",
+    haveRead: false,
+  }
+];
 
 // exercise 1
-function logBooks() {
-}
+//function logBooks() {
+  //books.forEach(function (book) {
+    //console.log(`${book.title} by ${book.author}`);
+  //});
+//}
 
 
 /*
@@ -61,6 +90,16 @@ As an example for this exercise, you might do the following steps
 
 **/
 
+function logBooks() {
+  books.forEach(function (book) {
+    if (book.haveRead) {
+      console.log(`You have already read ${book.title} by ${book.author}`);
+    } else {
+      console.log(`You have NOT read ${book.title} by ${book.author}`);
+    }
+  });
+}
+
 /* ======= TESTS - DO MODIFY (!!!) =====
 - To run the tests for this exercise, run `npm test -- --testPathPattern 8-reading-list.js`
 - To run all exercises/tests in the mandatory folder, run `npm test`

mandatory/9-budgets.js

@@ -17,6 +17,11 @@ Should give return the answer of 62600.
 **/
 
 function getBudgets(peopleArray) {
+  let total = 0;
+  for (const person of peopleArray) {
+    total += person.budget;
+  }
+  return total;
 }
 
 /* ======= TESTS - DO MODIFY (!!!) =====

mandatory/let writers = [.js

@@ -0,0 +1,51 @@
+let writers = [
+    {
+      firstName: "Virginia",
+      lastName: "Woolf",
+      occupation: "writer",
+      age: 59,
+      alive: false,
+    },
+    {
+      firstName: "Zadie",
+      lastName: "Smith",
+      occupation: "writer",
+      age: 40,
+      alive: true,
+    },
+    {
+      firstName: "Jane",
+      lastName: "Austen",
+      occupation: "writer",
+      age: 41,
+      alive: false,
+    },
+    {
+      firstName: "Bell",
+      lastName: "Hooks",
+      occupation: "writer",
+      age: 63,
+      alive: true,
+    },
+    {
+      firstName: "Yukiko",
+      lastName: "Motoya",
+      occupation: "writer",
+      age: 49,
+      alive: true,
+    }
+  ];
+
+  /*
+  Exercise 1:
+
+    Loop through the Array, and for each object, use `console.log()` to print out the below sentence
+    and insert the corresponding values to the place holders that are indicated in curly braces:
+
+    "Hi, my name is {firstName} {lastName}. I am {age} years old, and work as a {occupation}."
+  */
+function logAllWriters(writers) {
+    `Hi, my name is ${writers.firstName} ${writers.lastName}. I am ${writers.age} years old, and work as a ${writers.occupation}`;
+};
+
+console.log([logAllWriters]);

package.json

@@ -3,7 +3,7 @@
   "version": "1.0.0",
   "description": "Exercises for JS2 Week 1",
   "scripts": {
-    "test": "jest --testRegex='mandatory[/\\\\].*\\.js$' --testPathIgnorePatterns='choose-your-own|recipes|water-bottle'"
+    "test": "jest --testRegex='mandatory[/\\\\].*\\.js$'"
   },
   "repository": {
     "type": "git",