CodeYourFuture · PeterAhern · Oct 18, 2021 · Oct 19, 2021 · MoTaKh · Oct 21, 2021
diff --git a/mandatory/1-writers.js b/mandatory/1-writers.js
@@ -55,7 +55,7 @@ let writers = [
     occupation: "writer",
     age: 49,
     alive: true,
-  }
+  },
 ];
 
 /*
@@ -66,9 +66,14 @@ Exercise 1:
 
   "Hi, my name is {firstName} {lastName}. I am {age} years old, and work as a {occupation}."
 */
-function logAllWriters() {
+function logAllWriters(array) {
+  array.forEach((element) =>
+    console.log(
+      `Hi, my name is ${element.firstName} ${element.lastName}. I am ${element.age} years old, and work as a ${element.occupation}.`
+    )
+  );
   // write your code to log all writers here
-};
+}
 
 /*
 Exercise 2:
@@ -79,8 +84,14 @@ Exercise 2:
   "Writer {firstName} {lastName} died at {age} years old."
 */
 
-function logDeadWritersInTheirForties() {
-  // write your code here
+function logDeadWritersInTheirForties(array) {
+  array.forEach(function (array) {
+    if (array.age >= 40 && array.age <= 60 && array.alive === false) {
+      console.log(
+        `Writer ${array.firstName} ${array.lastName} died at ${array.age} years old.`
+      );
+    }
+  });
 }
 
 /*
@@ -91,39 +102,50 @@ Exercise 3:
   "Hi, my name is {firstName} {lastName}. I am {age} years old."
 */
 
-function logAliveWritersInTheirForties() {
-  // write your code here
-}
+function logAliveWritersInTheirForties(array) {  
+    array.forEach(function (array) {
+    if (array.age >= 40 && array.age <= 49 && array.alive === true) {
+      console.log(
+        `Hi, my name is ${array.firstName} ${array.lastName}. I am ${array.age} years old.`
+      );
+    }
+  });
+}// write your code here
+
+
 
 /* ======= TESTS - DO NOT MODIFY ===== 
 - To run the tests for this exercise, run `npm test -- --testPathPattern 1-writers.js`
 - To run all exercises/tests in the mandatory folder, run `npm test`
 - (Reminder: You must have run `npm install` one time before this will work!)
 */
 
-test("exercise 1", () => expectFunctionToLog(logAllWriters, [
-  "Hi, my name is Virginia Woolf. I am 59 years old, and work as a writer.",
-  "Hi, my name is Zadie Smith. I am 40 years old, and work as a writer.",
-  "Hi, my name is Jane Austen. I am 41 years old, and work as a writer.",
-  "Hi, my name is Bell Hooks. I am 63 years old, and work as a writer.",
-  "Hi, my name is Yukiko Motoya. I am 49 years old, and work as a writer."
-]));
-
-test("exercise 2", () => expectFunctionToLog(logDeadWritersInTheirForties, [
-  "Writer Jane Austen died at 41 years old."
-]));
-
-test("exercise 3", () => expectFunctionToLog(logAliveWritersInTheirForties, [
-  "Hi, my name is Zadie Smith. I am 40 years old.",
-  "Hi, my name is Yukiko Motoya. I am 49 years old."
-]));
+test("exercise 1", () =>
+  expectFunctionToLog(logAllWriters, [
+    "Hi, my name is Virginia Woolf. I am 59 years old, and work as a writer.",
+    "Hi, my name is Zadie Smith. I am 40 years old, and work as a writer.",
+    "Hi, my name is Jane Austen. I am 41 years old, and work as a writer.",
+    "Hi, my name is Bell Hooks. I am 63 years old, and work as a writer.",
+    "Hi, my name is Yukiko Motoya. I am 49 years old, and work as a writer.",
+  ]));
+
+test("exercise 2", () =>
+  expectFunctionToLog(logDeadWritersInTheirForties, [
+    "Writer Jane Austen died at 41 years old.",
+  ]));
+
+test("exercise 3", () =>
+  expectFunctionToLog(logAliveWritersInTheirForties, [
+    "Hi, my name is Zadie Smith. I am 40 years old.",
+    "Hi, my name is Yukiko Motoya. I am 49 years old.",
+  ]));
 
 function expectFunctionToLog(f, values) {
-    const consoleLogSpy = jest.spyOn(console, 'log');
-    f();
-    expect(consoleLogSpy).toBeCalledTimes(values.length);
-    values.forEach((value, i) => {
-      expect(consoleLogSpy).nthCalledWith(i+1, value);
-    });
-    consoleLogSpy.mockRestore();
-};
+  const consoleLogSpy = jest.spyOn(console, "log");
+  f();
+  expect(consoleLogSpy).toBeCalledTimes(values.length);
+  values.forEach((value, i) => {
+    expect(consoleLogSpy).nthCalledWith(i + 1, value);
+  });
+  consoleLogSpy.mockRestore();
+}
diff --git a/mandatory/10-cheap-diner.js b/mandatory/10-cheap-diner.js
@@ -30,38 +30,58 @@ Should give the answer "Nothing :("
 **/
 
 function chooseMeal(mealArray) {
+  mealArray.sort((meal1, meal2) => meal1.price - meal2.price);
+
+  let cheapestMeal = mealArray[0];
+  let secondCheapestMeal = mealArray[1];
+  let noMealMessage = "Nothing :(";
+
+  if(secondCheapestMeal) {
+    return secondCheapestMeal.name;
+  }
+  else if(cheapestMeal) {
+    return cheapestMeal.name;
+  }
+  else return noMealMessage;
 }
 
+
 /* ======= TESTS - DO MODIFY (!!!) =====
 - To run the tests for this exercise, run `npm test -- --testPathPattern 10-cheap-diner.js`
 - To run all exercises/tests in the mandatory folder, run `npm test`
 - (Reminder: You must have run `npm install` one time before this will work!)
 */
 
 test("Meal to select is last", () => {
-  expect(chooseMeal([
-    { name: "Dunkin' Donuts", price: 8.99 },
-    { name: "Captain D's", price: 13.99 },
-    { name: "Moe's Southwest Grill", price: 10.99 },
-  ])).toEqual("Moe's Southwest Grill");
+  expect(
+    chooseMeal([
+      { name: "Dunkin' Donuts", price: 8.99 },
+      { name: "Captain D's", price: 13.99 },
+      { name: "Moe's Southwest Grill", price: 10.99 },
+    ])
+  ).toEqual("Moe's Southwest Grill");
 });
 
 test("Meal to select is first", () => {
-  expect(chooseMeal([
-    { name: "Moe's Southwest Grill", price: 10.99 },
-    { name: "Dunkin' Donuts", price: 8.99 },
-    { name: "Captain D's", price: 13.99 },
-  ])).toEqual("Moe's Southwest Grill");
+  expect(
+    chooseMeal([
+      { name: "Moe's Southwest Grill", price: 10.99 },
+      { name: "Dunkin' Donuts", price: 8.99 },
+      { name: "Captain D's", price: 13.99 },
+    ])
+  ).toEqual("Moe's Southwest Grill");
 });
 
 test("Meal to select is also most expensive", () => {
-  expect(chooseMeal([
-    { name: "Burger King", price: 8.99 },
-    { name: "Wingstop", price: 9.99 },
-  ])).toEqual("Wingstop");
+  expect(
+    chooseMeal([
+      { name: "Burger King", price: 8.99 },
+      { name: "Wingstop", price: 9.99 },
+    ])
+  ).toEqual("Wingstop");
 });
 
-test("Only one meal to select", () => { 
+test("Only one meal to select", () => {
   expect(chooseMeal([{ name: "Subway", price: 8.99 }])).toEqual("Subway");
 });
 
@@ -70,10 +90,12 @@ test("No meals to select", () => {
 });
 
 test("Meal to select is second cheapest, not second most expensive", () => {
-  expect(chooseMeal([
-    { name: "Church's Chicken", price: 8.99 },
-    { name: "Smoothie King", price: 109.99 },
-    { name: "Jason's Deli", price: 22.77 },
-    { name: "Jamba Juice", price: 38.44 },
-  ])).toEqual("Jason's Deli");
+  expect(
+    chooseMeal([
+      { name: "Church's Chicken", price: 8.99 },
+      { name: "Smoothie King", price: 109.99 },
+      { name: "Jason's Deli", price: 22.77 },
+      { name: "Jamba Juice", price: 38.44 },
+    ])
+  ).toEqual("Jason's Deli");
 });
diff --git a/mandatory/11-choose-your-own-adventure.js b/mandatory/11-choose-your-own-adventure.js
@@ -51,6 +51,14 @@ let game = {
   currentRoom: null,
 
   start: function (roomName) {
+    if (roomName === "hall") {
+      this.currentRoom = rooms.hall;
+    } else if (roomName === "classroom") {
+      this.currentRoom = rooms.classroom;
+    } else if (roomName === "library") {
+      this.currentRoom = rooms.library;
+    }
+
     // This function is called with the name of the room that the player wants
     // to start in.
     // Finish the function so that the currentRoom property is set to the room
@@ -60,13 +68,22 @@ let game = {
   },
 
   move: function (direction) {
-    // This function is called with the direction that the player wants to move.
-    // Finish the function so that the currentRoom property is updated with new
-    // room in the direction that the player wants to move in.
-    //
-    // Hint: the room objects have north/east/south/west methods which return
-    // a new room object that is in the relevant direction.
+    if (direction === "north") {
+      this.currentRoom = this.currentRoom.north();
+    } else if (direction === "east") {
+      this.currentRoom = this.currentRoom.east();
+    } else if (direction === "south") {
+      this.currentRoom = this.currentRoom.south();
+    } else if (direction === "west") {
+      this.currentRoom = this.currentRoom.west();
+    }
   },
+  // This function is called with the direction that the player wants to move.
+  // Finish the function so that the currentRoom property is updated with new
+  // room in the direction that the player wants to move in.
+  //
+  // Hint: the room objects have north/east/south/west methods which return
+  // a new room object that is in the relevant direction.
 };
 
 /*

diff --git a/mandatory/2-eligible-students.js b/mandatory/2-eligible-students.js
@@ -20,25 +20,30 @@
  */
 
 function eligibleStudents(attendances) {
-
+  return attendances
+    .filter((element) => element.attendance >= 8)
+    .map((element) => element.name);
 }
-
 /* ======= TESTS - DO NOT MODIFY ===== 
 - To run the tests for this exercise, run `npm test -- --testPathPattern 2-eligible-students.js`
 - To run all exercises/tests in the mandatory folder, run `npm test`
 - (Reminder: You must have run `npm install` one time before this will work!)
 */
 
 const attendances = [
-    {name: "Ahmed", attendance: 8},
-    {name: "Clement", attendance: 10},
-    {name: "Elamin", attendance: 6},
-    {name: "Adam", attendance: 7},
-    {name: "Tayoa", attendance: 11},
-    {name: "Nina", attendance: 10},
+  { name: "Ahmed", attendance: 8 },
+  { name: "Clement", attendance: 10 },
+  { name: "Elamin", attendance: 6 },
+  { name: "Adam", attendance: 7 },
+  { name: "Tayoa", attendance: 11 },
+  { name: "Nina", attendance: 10 },
 ];
-  
+
 test("eligibleStudents function works", () => {
-    expect(eligibleStudents(attendances)).toEqual(["Ahmed", "Clement", "Tayoa", "Nina"]);
+  expect(eligibleStudents(attendances)).toEqual([
+    "Ahmed",
+    "Clement",
+    "Tayoa",
+    "Nina",
+  ]);
 });
-
diff --git a/mandatory/3-journey-planner.js b/mandatory/3-journey-planner.js
@@ -27,9 +27,17 @@
 */
 
 function journeyPlanner(locations, transportMode) {
-
+  let array1 = [];
+  for (const property in locations) {
+    console.log(property);
+    if (londonLocations[property].includes(transportMode)) {
+      array1.push(property);
+    }
+  }
+  return array1;
 }
 
+
 /* ======= TESTS - DO NOT MODIFY ===== 
 - To run the tests for this exercise, run `npm test -- --testPathPattern 3-journey-planner.js`
 - To run all exercises/tests in the mandatory folder, run `npm test`

diff --git a/mandatory/4-water-bottle.js b/mandatory/4-water-bottle.js
@@ -21,24 +21,45 @@ You have to implement the missing features according to the specification.
 
 // Here is your starting point:
 let bottle = {
-  volume: 0,
+  volume: 5,
   fillUp: function () {
     // calling this function should completely fill your bottle (volume = 100);
+    this.volume = 100;
+    return this.volume;
   },
   pour: function () {
     // calling this function should increase your bottle volume by 10 units;
+    if (this.volume <= 90) {
+      this.volume += 10;
+      return this.volume;
+    } else {
+      return this.volume;
+    }
   },
   drink: function () {
     // calling this function should decrease your bottle volume by 10 units;
+    if (this.volume >= 10) {
+      this.volume -= 10;
+      return this.volume;
+    } else {
+      return this.volume;
+    }
   },
   isFull: function () {
     // this function should return true if your bottle is full;
+    if (this.volume === 100) {
+      return true;
+    }
+    return false;
   },
   isEmpty: function () {
     // this function should return true if your bottle is empty;
+    if (this.volume === 0) {
+      return true;
+    }
+    return false;
   },
 };
-
 /*
 TIP:
   Remember that for changing properties on the current object inside one of its
@@ -149,4 +170,4 @@ test("Given an empty bottle, calling pour then drink, then the bottle is empty",
   bottle.pour();
   bottle.drink();
   expect(bottle.volume).toEqual(0);
-});
+});