From defa5453410fa2ac44bd234edebd520dd1ab9d60 Mon Sep 17 00:00:00 2001
From: Kwanda Silekwa <46996545+kwanda9700@users.noreply.github.com>
Date: Tue, 5 Jul 2022 14:49:39 +0200
Subject: [PATCH 01/10] Update exercise.js

---
 1-exercises/A-undefined/exercise.js | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/1-exercises/A-undefined/exercise.js b/1-exercises/A-undefined/exercise.js
index 0acfc78d..bf462353 100644
--- a/1-exercises/A-undefined/exercise.js
+++ b/1-exercises/A-undefined/exercise.js
@@ -12,6 +12,7 @@
 // Example 1
 let a;
 console.log(a);
+// a is declared but has no value given to it 
 
 
 // Example 2
@@ -22,6 +23,8 @@ function sayHello() {
 let hello = sayHello();
 console.log(hello);
 
+// the function sayHello() is not returning anything 
+
 
 // Example 3
 function sayHelloToUser(user) {
@@ -29,8 +32,10 @@ function sayHelloToUser(user) {
 }
 
 sayHelloToUser();
+// the sayHelloUser() function is expecting 1 argument to be passed and none is passed. 
 
 
 // Example 4
 let arr = [1,2,3];
 console.log(arr[3]);
+// the array index passed on the console log is non existent because the array has indexes of 0,1 and 2 not 3

From 5e71cb87e5ea6e9237703e5a4dcfa78d108c4e1f Mon Sep 17 00:00:00 2001
From: Kwanda Silekwa <46996545+kwanda9700@users.noreply.github.com>
Date: Tue, 5 Jul 2022 14:52:32 +0200
Subject: [PATCH 02/10] Update exercise.js

---
 1-exercises/B-while-loop/exercise.js | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/1-exercises/B-while-loop/exercise.js b/1-exercises/B-while-loop/exercise.js
index b459888f..fe511b70 100644
--- a/1-exercises/B-while-loop/exercise.js
+++ b/1-exercises/B-while-loop/exercise.js
@@ -7,6 +7,8 @@
 
 function evenNumbers(n) {
     // TODO
+if(n % 2 === 0){
+console.log(n);
 }
 
 evenNumbers(3); // should output 0,2,4

From 472beb083ad361818c17c44f46fe535b201b5aa1 Mon Sep 17 00:00:00 2001
From: Kwanda Silekwa <kwanda9700@gmail.com>
Date: Tue, 5 Jul 2022 19:47:16 +0200
Subject: [PATCH 03/10] update

---
 1-exercises/B-while-loop/exercise.js          | 16 ++++++++---
 .../C-while-loop-with-array/exercise.js       | 27 ++++++++++++-------
 2 files changed, 29 insertions(+), 14 deletions(-)

diff --git a/1-exercises/B-while-loop/exercise.js b/1-exercises/B-while-loop/exercise.js
index fe511b70..a26ca5d4 100644
--- a/1-exercises/B-while-loop/exercise.js
+++ b/1-exercises/B-while-loop/exercise.js
@@ -6,11 +6,19 @@
 */
 
 function evenNumbers(n) {
-    // TODO
-if(n % 2 === 0){
-console.log(n);
+  let i = 0;
+  let numList = [];
+  while (numList.length < n) {
+    if (n > 0) {
+      if (i % 2 === 0) {
+        numList.push(i);
+      }
+    }
+    i++;
+  }
+  return numList.toString();
 }
 
 evenNumbers(3); // should output 0,2,4
 evenNumbers(0); // should output nothing
-evenNumbers(10); // should output 0,2,4,6,8,10,12,14,16,18
+evenNumbers(-10); // should output 0,2,4,6,8,10,12,14,16,18
diff --git a/1-exercises/C-while-loop-with-array/exercise.js b/1-exercises/C-while-loop-with-array/exercise.js
index d584cd75..1ddca431 100644
--- a/1-exercises/C-while-loop-with-array/exercise.js
+++ b/1-exercises/C-while-loop-with-array/exercise.js
@@ -5,19 +5,26 @@
 */
 
 const BIRTHDAYS = [
-    "January 7th",
-    "February 12th",
-    "April 3rd",
-    "April 5th",
-    "May 3rd",
-    "July 11th",
-    "July 17th",
-    "September 28th",
-    "November 15th"
+  "January 7th",
+  "February 12th",
+  "April 3rd",
+  "April 5th",
+  "May 3rd",
+  "July 11th",
+  "July 17th",
+  "September 28th",
+  "November 15th",
 ];
 
 function findFirstJulyBDay(birthdays) {
-    // TODO
+  arrayLength = birthdays.length;
+  i = 0;
+  while (i < arrayLength) {
+    if (birthdays[i].includes("July")) {
+      return birthdays[i];
+    }
+    i++;
+  }
 }
 
 console.log(findFirstJulyBDay(BIRTHDAYS)); // should output "July 11th"

From cb3f9340e5b2420960c9e69d0fef852ef777faeb Mon Sep 17 00:00:00 2001
From: Kwanda Silekwa <kwanda9700@gmail.com>
Date: Tue, 5 Jul 2022 20:58:31 +0200
Subject: [PATCH 04/10] update

---
 1-exercises/B-while-loop/exercise.js | 10 ++++------
 1-exercises/D-do-while/exercise.js   | 13 +++++++++++--
 2 files changed, 15 insertions(+), 8 deletions(-)

diff --git a/1-exercises/B-while-loop/exercise.js b/1-exercises/B-while-loop/exercise.js
index a26ca5d4..a087b3e9 100644
--- a/1-exercises/B-while-loop/exercise.js
+++ b/1-exercises/B-while-loop/exercise.js
@@ -9,16 +9,14 @@ function evenNumbers(n) {
   let i = 0;
   let numList = [];
   while (numList.length < n) {
-    if (n > 0) {
-      if (i % 2 === 0) {
-        numList.push(i);
-      }
+    if (i % 2 === 0) {
+      numList.push(i);
     }
     i++;
   }
-  return numList.toString();
+  console.log(numList.toString());
 }
 
 evenNumbers(3); // should output 0,2,4
 evenNumbers(0); // should output nothing
-evenNumbers(-10); // should output 0,2,4,6,8,10,12,14,16,18
+evenNumbers(10); // should output 0,2,4,6,8,10,12,14,16,18
diff --git a/1-exercises/D-do-while/exercise.js b/1-exercises/D-do-while/exercise.js
index f10d0764..6186d4e9 100644
--- a/1-exercises/D-do-while/exercise.js
+++ b/1-exercises/D-do-while/exercise.js
@@ -7,9 +7,18 @@
 */
 
 function evenNumbersSum(n) {
-    // TODO
+  let i = 0;
+  let sum = 0;
+  let num = 0;
+
+  do {
+    sum += num;
+    num += 2;
+    i += 1;
+  } while (i < n);
+  return sum;
 }
 
 console.log(evenNumbersSum(3)); // should output 6
 console.log(evenNumbersSum(0)); // should output 0
-console.log(evenNumbersSum(10)); // should output 90
\ No newline at end of file
+console.log(evenNumbersSum(10)); // should output 90

From 28d6be72ba0d345bc31985d79c229f482d7b9adf Mon Sep 17 00:00:00 2001
From: Kwanda Silekwa <kwanda9700@gmail.com>
Date: Sat, 16 Jul 2022 11:55:23 +0200
Subject: [PATCH 05/10] update

---
 1-exercises/E-for-loop/exercise1.js   | 11 ++--
 1-exercises/E-for-loop/exercise2.js   | 23 ++++-----
 1-exercises/F-for-of-loop/exercise.js | 17 +++++--
 2-mandatory/1-weather-report.js       | 72 ++++++++++++++-------------
 2-mandatory/execrise.js               | 33 ++++++++++++
 5 files changed, 99 insertions(+), 57 deletions(-)
 create mode 100644 2-mandatory/execrise.js

diff --git a/1-exercises/E-for-loop/exercise1.js b/1-exercises/E-for-loop/exercise1.js
index db5fac64..5b431ac0 100644
--- a/1-exercises/E-for-loop/exercise1.js
+++ b/1-exercises/E-for-loop/exercise1.js
@@ -4,11 +4,14 @@
     Change the while loop below into a for loop.
 */
 
-
 // Change the below code to use a for loop instead of a while loop.
 let i = 0;
-while(i < 26) {
-    console.log(String.fromCharCode(97 + i));
-    i++;
+// while (i < 26) {
+//   console.log(String.fromCharCode(97 + i));
+//   i++;
+// }
+
+for (i; i < 26; i++) {
+  console.log(String.fromCharCode(97 + i));
 }
 // The output shouldn't change.
diff --git a/1-exercises/E-for-loop/exercise2.js b/1-exercises/E-for-loop/exercise2.js
index 081002b2..f6a60029 100644
--- a/1-exercises/E-for-loop/exercise2.js
+++ b/1-exercises/E-for-loop/exercise2.js
@@ -11,22 +11,19 @@
 */
 
 const WRITERS = [
-    "Virginia Woolf",
-    "Zadie Smith",
-    "Jane Austen",
-    "Bell Hooks",
-    "Yukiko Motoya"
-]
-
-const AGES = [
-    59,
-    40,
-    41,
-    63,
-    49
+  "Virginia Woolf",
+  "Zadie Smith",
+  "Jane Austen",
+  "Bell Hooks",
+  "Yukiko Motoya",
 ];
 
+const AGES = [59, 40, 41, 63, 49];
+
 // TODO - Write for loop code here
+for (let i = 0; i < WRITERS.length; i++) {
+  console.log(`${WRITERS[i]} is ${AGES[i]} years old}`);
+}
 
 /*
 The output should look something like this:
diff --git a/1-exercises/F-for-of-loop/exercise.js b/1-exercises/F-for-of-loop/exercise.js
index 65585c6a..22a58cd7 100644
--- a/1-exercises/F-for-of-loop/exercise.js
+++ b/1-exercises/F-for-of-loop/exercise.js
@@ -4,13 +4,20 @@
 
 // TODO Use a for-of loop to output each of the tube stations below.
 let tubeStations = [
-    "Aldgate",
-    "Baker Street",
-    "Picadilly Circus",
-    "Oxford Street",
-    "Tottenham Court Road"
+  "Aldgate",
+  "Baker Street",
+  "Picadilly Circus",
+  "Oxford Street",
+  "Tottenham Court Road",
 ];
 
+for (let i = 0; i < tubeStations.length; i++) {
+  console.log(tubeStations[i]);
+}
 
 // TODO Use a for-of loop to capitalise and output each letter in the string seperately.
 let str = "codeyourfuture";
+
+for (let i = 0; i < str.length; i++) {
+  console.log(str[i]);
+}
diff --git a/2-mandatory/1-weather-report.js b/2-mandatory/1-weather-report.js
index dcc2bdb0..ebb740e3 100644
--- a/2-mandatory/1-weather-report.js
+++ b/2-mandatory/1-weather-report.js
@@ -11,53 +11,55 @@
         - Hint: you can call the temperatureService function from your function
 */
 
+let temperatureReport = [];
+
 function getTemperatureReport(cities) {
-    // TODO
+  // TODO
+  for (let i = 0; i < cities.length; i++) {
+    temperatureReport.push(
+      `The temperature in ${cities[i]} is ${temperatureService(
+        cities[i]
+      )} degrees`
+    );
+  }
+  return temperatureReport;
 }
 
-
 /* ======= TESTS - DO NOT MODIFY ===== */
 
 function temperatureService(city) {
-    let temparatureMap  = new Map();
-
-    temparatureMap.set('London', 10);
-    temparatureMap.set('Paris', 12);
-    temparatureMap.set('Barcelona', 17);
-    temparatureMap.set('Dubai', 27);
-    temparatureMap.set('Mumbai', 29);
-    temparatureMap.set('São Paulo', 23);
-    temparatureMap.set('Lagos', 33);
-    
-    return temparatureMap.get(city);
+  let temparatureMap = new Map();
+
+  temparatureMap.set("London", 10);
+  temparatureMap.set("Paris", 12);
+  temparatureMap.set("Barcelona", 17);
+  temparatureMap.set("Dubai", 27);
+  temparatureMap.set("Mumbai", 29);
+  temparatureMap.set("São Paulo", 23);
+  temparatureMap.set("Lagos", 33);
+
+  return temparatureMap.get(city);
 }
 
 test("should return a temperature report for the user's cities", () => {
-    let usersCities = [
-        "London",
-        "Paris",
-        "São Paulo"
-    ]
-
-    expect(getTemperatureReport(usersCities)).toEqual([
-        "The temperature in London is 10 degrees",
-        "The temperature in Paris is 12 degrees",
-        "The temperature in São Paulo is 23 degrees"
-    ]);
+  let usersCities = ["London", "Paris", "São Paulo"];
+
+  expect(getTemperatureReport(usersCities)).toEqual([
+    "The temperature in London is 10 degrees",
+    "The temperature in Paris is 12 degrees",
+    "The temperature in São Paulo is 23 degrees",
+  ]);
 });
 
 test("should return a temperature report for the user's cities (alternate input)", () => {
-    let usersCities = [
-        "Barcelona",
-        "Dubai"
-    ]
-
-    expect(getTemperatureReport(usersCities)).toEqual([
-        "The temperature in Barcelona is 17 degrees",
-        "The temperature in Dubai is 27 degrees"
-    ]);
+  let usersCities = ["Barcelona", "Dubai"];
+
+  expect(getTemperatureReport(usersCities)).toEqual([
+    "The temperature in Barcelona is 17 degrees",
+    "The temperature in Dubai is 27 degrees",
+  ]);
 });
 
 test("should return an empty array if the user hasn't selected any cities", () => {
-    expect(getTemperatureReport([])).toEqual([]);
-});
\ No newline at end of file
+  expect(getTemperatureReport([])).toEqual([]);
+});
diff --git a/2-mandatory/execrise.js b/2-mandatory/execrise.js
new file mode 100644
index 00000000..c75baeb1
--- /dev/null
+++ b/2-mandatory/execrise.js
@@ -0,0 +1,33 @@
+let temperatureReport = [];
+
+function getTemperatureReport(cities) {
+  // TODO
+  for (let i = 0; i < cities.length; i++) {
+    temperatureReport.push(
+      `The temperature in ${cities[i]} is ${temperatureService(
+        cities[i]
+      )} degrees`
+    );
+  }
+  return temperatureReport;
+}
+
+function temperatureService(city) {
+  let temparatureMap = new Map();
+
+  temparatureMap.set("London", 10);
+  temparatureMap.set("Paris", 12);
+  temparatureMap.set("Barcelona", 17);
+  temparatureMap.set("Dubai", 27);
+  temparatureMap.set("Mumbai", 29);
+  temparatureMap.set("São Paulo", 23);
+  temparatureMap.set("Lagos", 33);
+
+  return temparatureMap.get(city);
+}
+
+let usersCities = ["London", "Paris", "São Paulo"];
+
+let output = getTemperatureReport(usersCities);
+
+console.log(output);

From 43e6c73a007656ec9b870420c076cb112db48d30 Mon Sep 17 00:00:00 2001
From: Kwanda Silekwa <kwanda9700@gmail.com>
Date: Sat, 16 Jul 2022 11:55:41 +0200
Subject: [PATCH 06/10] Delete execrise.js

---
 2-mandatory/execrise.js | 33 ---------------------------------
 1 file changed, 33 deletions(-)
 delete mode 100644 2-mandatory/execrise.js

diff --git a/2-mandatory/execrise.js b/2-mandatory/execrise.js
deleted file mode 100644
index c75baeb1..00000000
--- a/2-mandatory/execrise.js
+++ /dev/null
@@ -1,33 +0,0 @@
-let temperatureReport = [];
-
-function getTemperatureReport(cities) {
-  // TODO
-  for (let i = 0; i < cities.length; i++) {
-    temperatureReport.push(
-      `The temperature in ${cities[i]} is ${temperatureService(
-        cities[i]
-      )} degrees`
-    );
-  }
-  return temperatureReport;
-}
-
-function temperatureService(city) {
-  let temparatureMap = new Map();
-
-  temparatureMap.set("London", 10);
-  temparatureMap.set("Paris", 12);
-  temparatureMap.set("Barcelona", 17);
-  temparatureMap.set("Dubai", 27);
-  temparatureMap.set("Mumbai", 29);
-  temparatureMap.set("São Paulo", 23);
-  temparatureMap.set("Lagos", 33);
-
-  return temparatureMap.get(city);
-}
-
-let usersCities = ["London", "Paris", "São Paulo"];
-
-let output = getTemperatureReport(usersCities);
-
-console.log(output);

From 363e9b413337991754d1e67d6fab3e131d272fe0 Mon Sep 17 00:00:00 2001
From: Kwanda Silekwa <kwanda9700@gmail.com>
Date: Thu, 21 Jul 2022 17:07:47 +0200
Subject: [PATCH 07/10] update

---
 2-mandatory/1-weather-report.js          | 10 +--
 2-mandatory/2-retrying-random-numbers.js | 21 +++---
 2-mandatory/3-financial-times.js         | 87 ++++++++++++++++--------
 2-mandatory/4-stocks.js                  | 76 ++++++++++++++-------
 4 files changed, 128 insertions(+), 66 deletions(-)

diff --git a/2-mandatory/1-weather-report.js b/2-mandatory/1-weather-report.js
index ebb740e3..e2b29d22 100644
--- a/2-mandatory/1-weather-report.js
+++ b/2-mandatory/1-weather-report.js
@@ -15,13 +15,13 @@ let temperatureReport = [];
 
 function getTemperatureReport(cities) {
   // TODO
-  for (let i = 0; i < cities.length; i++) {
+  let temperatureReport = [];
+  cities.forEach((cityName) => {
+    const cityTemp = temperatureService(cityName);
     temperatureReport.push(
-      `The temperature in ${cities[i]} is ${temperatureService(
-        cities[i]
-      )} degrees`
+      "The temperature in " + cityName + " is " + cityTemp + " degrees"
     );
-  }
+  });
   return temperatureReport;
 }
 
diff --git a/2-mandatory/2-retrying-random-numbers.js b/2-mandatory/2-retrying-random-numbers.js
index 10aab37d..a6d004bc 100644
--- a/2-mandatory/2-retrying-random-numbers.js
+++ b/2-mandatory/2-retrying-random-numbers.js
@@ -5,20 +5,25 @@
 
 // This function shouldn't be changed
 function generateRandomNumber() {
-    console.log("Generating number...");
-    return Math.round(Math.random() * 100);
+  console.log("Generating number...");
+  return Math.round(Math.random() * 100);
 }
 
 function getRandomNumberGreaterThan50() {
-    // TODO - implement using a do-while loop
+  // TODO - implement using a do-while loop
+  num = 0;
+  do {
+    num = generateRandomNumber();
+  } while (num <= 50);
+  return num;
 }
 
 /* ======= TESTS - DO NOT MODIFY ===== */
 
 test("Returned value should always be greater than 50", () => {
-    expect(getRandomNumberGreaterThan50()).toBeGreaterThan(50);
-    expect(getRandomNumberGreaterThan50()).toBeGreaterThan(50);
-    expect(getRandomNumberGreaterThan50()).toBeGreaterThan(50);
-    expect(getRandomNumberGreaterThan50()).toBeGreaterThan(50);
-    expect(getRandomNumberGreaterThan50()).toBeGreaterThan(50);
+  expect(getRandomNumberGreaterThan50()).toBeGreaterThan(50);
+  expect(getRandomNumberGreaterThan50()).toBeGreaterThan(50);
+  expect(getRandomNumberGreaterThan50()).toBeGreaterThan(50);
+  expect(getRandomNumberGreaterThan50()).toBeGreaterThan(50);
+  expect(getRandomNumberGreaterThan50()).toBeGreaterThan(50);
 });
diff --git a/2-mandatory/3-financial-times.js b/2-mandatory/3-financial-times.js
index 2ce6fb73..9ad4309a 100644
--- a/2-mandatory/3-financial-times.js
+++ b/2-mandatory/3-financial-times.js
@@ -5,7 +5,12 @@
     Implement the function below, which will return a new array containing only article titles which will fit.
 */
 function potentialHeadlines(allArticleTitles) {
-    // TODO
+  // TODO
+  let potentialArticles = allArticleTitles.filter(
+    (element) => element.length <= 65
+  );
+
+  return potentialArticles;
 }
 
 /*
@@ -14,7 +19,13 @@ function potentialHeadlines(allArticleTitles) {
     (you can assume words will always be seperated by a space)
 */
 function titleWithFewestWords(allArticleTitles) {
-    // TODO
+  // TODO
+  for (let shortestTitle of allArticleTitles) {
+    let fewestWordTitle = shortestTitle.split(" ");
+    if (fewestWordTitle.length <= 7) {
+      return shortestTitle;
+    }
+  }
 }
 
 /*
@@ -23,7 +34,15 @@ function titleWithFewestWords(allArticleTitles) {
     (Hint: remember that you can also loop through the characters of a string if you need to)
 */
 function headlinesWithNumbers(allArticleTitles) {
-    // TODO
+  // TODO
+  let titleWithNumArr = [];
+  for (let title of allArticleTitles) {
+    let reg = /\d/;
+    if (reg.test(title)) {
+      titleWithNumArr.push(title);
+    }
+  }
+  return titleWithNumArr;
 }
 
 /*
@@ -31,51 +50,61 @@ function headlinesWithNumbers(allArticleTitles) {
     Implement the function below to return this number - rounded to the nearest integer.
 */
 function averageNumberOfCharacters(allArticleTitles) {
-    // TODO
+  // TODO
+  let total = 0;
+  allArticleTitles.forEach((title) => {
+    total += title.length;
+  });
+  avgNumChar = Math.round(total / allArticleTitles.length);
+  return avgNumChar;
 }
 
-
-
 /* ======= List of Articles - DO NOT MODIFY ===== */
 const ARTICLE_TITLES = [
-    "Streaming wars drive media groups to spend more than $100bn on new content",
-    "Amazon Prime Video India country head: streaming is driving a TV revolution",
-    "Aerospace chiefs prepare for bumpy ride in recovery of long-haul flights",
-    "British companies look to muscle in on US retail investing boom",
-    "Libor to take firm step towards oblivion on New Year's Day",
-    "Audit profession unattractive to new recruits, says PwC boss",
-    "Chinese social media users blast Elon Musk over near miss in space",
-    "Companies raise over $12tn in 'blockbuster' year for global capital markets",
-    "The three questions that dominate investment",
-    "Brussels urges Chile's incoming president to endorse EU trade deal",
+  "Streaming wars drive media groups to spend more than $100bn on new content",
+  "Amazon Prime Video India country head: streaming is driving a TV revolution",
+  "Aerospace chiefs prepare for bumpy ride in recovery of long-haul flights",
+  "British companies look to muscle in on US retail investing boom",
+  "Libor to take firm step towards oblivion on New Year's Day",
+  "Audit profession unattractive to new recruits, says PwC boss",
+  "Chinese social media users blast Elon Musk over near miss in space",
+  "Companies raise over $12tn in 'blockbuster' year for global capital markets",
+  "The three questions that dominate investment",
+  "Brussels urges Chile's incoming president to endorse EU trade deal",
 ];
 
 /* ======= TESTS - DO NOT MODIFY ===== */
 
 test("should only return potential headlines", () => {
-    expect(new Set(potentialHeadlines(ARTICLE_TITLES))).toEqual(new Set([
-        "British companies look to muscle in on US retail investing boom",
-        "Libor to take firm step towards oblivion on New Year's Day",
-        "Audit profession unattractive to new recruits, says PwC boss",
-        "The three questions that dominate investment"
-    ]));
+  expect(new Set(potentialHeadlines(ARTICLE_TITLES))).toEqual(
+    new Set([
+      "British companies look to muscle in on US retail investing boom",
+      "Libor to take firm step towards oblivion on New Year's Day",
+      "Audit profession unattractive to new recruits, says PwC boss",
+      "The three questions that dominate investment",
+    ])
+  );
 });
 
 test("should return an empty array for empty input", () => {
-    expect(potentialHeadlines([])).toEqual([]);
+  expect(potentialHeadlines([])).toEqual([]);
 });
 
 test("should return the title with the fewest words", () => {
-    expect(titleWithFewestWords(ARTICLE_TITLES)).toEqual("The three questions that dominate investment");
+  expect(titleWithFewestWords(ARTICLE_TITLES)).toEqual(
+    "The three questions that dominate investment"
+  );
 });
 
 test("should only return headlines containing numbers", () => {
-    expect(new Set(headlinesWithNumbers(ARTICLE_TITLES))).toEqual(new Set([
-        "Streaming wars drive media groups to spend more than $100bn on new content",
-        "Companies raise over $12tn in 'blockbuster' year for global capital markets"
-    ]));
+  expect(new Set(headlinesWithNumbers(ARTICLE_TITLES))).toEqual(
+    new Set([
+      "Streaming wars drive media groups to spend more than $100bn on new content",
+      "Companies raise over $12tn in 'blockbuster' year for global capital markets",
+    ])
+  );
 });
 
 test("should return the average number of characters in a headline", () => {
-    expect(averageNumberOfCharacters(ARTICLE_TITLES)).toEqual(65);
+  expect(averageNumberOfCharacters(ARTICLE_TITLES)).toEqual(65);
 });
diff --git a/2-mandatory/4-stocks.js b/2-mandatory/4-stocks.js
index 72d62f94..d4b8693a 100644
--- a/2-mandatory/4-stocks.js
+++ b/2-mandatory/4-stocks.js
@@ -11,11 +11,11 @@
 const STOCKS = ["aapl", "msft", "amzn", "googl", "tsla"];
 
 const CLOSING_PRICES_LAST_5_DAYS_FOR_ALL_STOCKS = [
-    [179.19, 180.33, 176.28, 175.64, 172.99], // AAPL
-    [340.69, 342.45, 334.69, 333.20, 327.29], // MSFT
-    [3384.44, 3393.39, 3421.37, 3420.74, 3408.34], // AMZN
-    [2951.88, 2958.13, 2938.33, 2928.30, 2869.45], // GOOGL
-    [1101.30, 1093.94, 1067.00, 1008.87, 938.53] // TSLA
+  [179.19, 180.33, 176.28, 175.64, 172.99], // AAPL
+  [340.69, 342.45, 334.69, 333.2, 327.29], // MSFT
+  [3384.44, 3393.39, 3421.37, 3420.74, 3408.34], // AMZN
+  [2951.88, 2958.13, 2938.33, 2928.3, 2869.45], // GOOGL
+  [1101.3, 1093.94, 1067.0, 1008.87, 938.53], // TSLA
 ];
 
 /*
@@ -34,7 +34,17 @@ const CLOSING_PRICES_LAST_5_DAYS_FOR_ALL_STOCKS = [
         Functions can help with this!
 */
 function getAveragePrices(closingPricesForAllStocks) {
-    // TODO
+  // TODO
+  let result = [];
+
+  for (let stockValue of closingPricesForAllStocks) {
+    let total = stockValue.reduce((oldPrice, newPrice) => {
+      return oldPrice + newPrice;
+    });
+    let avgPrice = (total / 5).toFixed(2);
+    result.push(Number(avgPrice));
+  }
+  return result;
 }
 
 /*
@@ -48,7 +58,12 @@ function getAveragePrices(closingPricesForAllStocks) {
     The price change value should be rounded to 2 decimal places, and should be a number (not a string)
 */
 function getPriceChanges(closingPricesForAllStocks) {
-    // TODO
+  // TODO
+  let result = [];
+  closingPricesForAllStocks.forEach((price) => {
+    result.push(Number((price[price.length - 1] - price[0]).toFixed(2)));
+  });
+  return result;
 }
 
 /*
@@ -64,31 +79,44 @@ function getPriceChanges(closingPricesForAllStocks) {
     The price should be shown with exactly 2 decimal places.
 */
 function highestPriceDescriptions(closingPricesForAllStocks, stocks) {
-    // TODO
+  // TODO
+  let highest = [];
+  let financialReport = [];
+  let stockToUpper = [];
+  for (let i = 0; i < closingPricesForAllStocks.length; i++) {
+    highest.push(Math.max(...closingPricesForAllStocks[i]));
+    stockToUpper = stocks[i];
+    financialReport.push(
+      "The highest price of " +
+        stockToUpper.toUpperCase() +
+        " in the last 5 days was " +
+        highest[i].toFixed(2)
+    );
+  }
+  return financialReport;
 }
 
-
 /* ======= TESTS - DO NOT MODIFY ===== */
 test("should return the average price for each stock", () => {
-    expect(getAveragePrices(CLOSING_PRICES_LAST_5_DAYS_FOR_ALL_STOCKS)).toEqual(
-        [176.89, 335.66, 3405.66, 2929.22, 1041.93]
-    );
+  expect(getAveragePrices(CLOSING_PRICES_LAST_5_DAYS_FOR_ALL_STOCKS)).toEqual([
+    176.89, 335.66, 3405.66, 2929.22, 1041.93,
+  ]);
 });
 
 test("should return the price change for each stock", () => {
-    expect(getPriceChanges(CLOSING_PRICES_LAST_5_DAYS_FOR_ALL_STOCKS)).toEqual(
-        [-6.2, -13.4, 23.9, -82.43, -162.77]
-    );
+  expect(getPriceChanges(CLOSING_PRICES_LAST_5_DAYS_FOR_ALL_STOCKS)).toEqual([
+    -6.2, -13.4, 23.9, -82.43, -162.77,
+  ]);
 });
 
 test("should return a description of the highest price for each stock", () => {
-    expect(highestPriceDescriptions(CLOSING_PRICES_LAST_5_DAYS_FOR_ALL_STOCKS, STOCKS)).toEqual(
-        [
-            "The highest price of AAPL in the last 5 days was 180.33",
-            "The highest price of MSFT in the last 5 days was 342.45",
-            "The highest price of AMZN in the last 5 days was 3421.37",
-            "The highest price of GOOGL in the last 5 days was 2958.13",
-            "The highest price of TSLA in the last 5 days was 1101.30"
-        ]
-    );
+  expect(
+    highestPriceDescriptions(CLOSING_PRICES_LAST_5_DAYS_FOR_ALL_STOCKS, STOCKS)
+  ).toEqual([
+    "The highest price of AAPL in the last 5 days was 180.33",
+    "The highest price of MSFT in the last 5 days was 342.45",
+    "The highest price of AMZN in the last 5 days was 3421.37",
+    "The highest price of GOOGL in the last 5 days was 2958.13",
+    "The highest price of TSLA in the last 5 days was 1101.30",
+  ]);
 });

From 55506c82c9a330fbad32fb0e3288325a646686bd Mon Sep 17 00:00:00 2001
From: Kwanda Silekwa <kwanda9700@gmail.com>
Date: Thu, 21 Jul 2022 18:31:50 +0200
Subject: [PATCH 08/10] update

---
 3-extra/1-factorial.js        |  13 ++-
 3-extra/2-array-of-objects.js | 185 ++++++++++++++++++++++------------
 3-extra/exe.js                | 124 +++++++++++++++++++++++
 3 files changed, 256 insertions(+), 66 deletions(-)
 create mode 100644 3-extra/exe.js

diff --git a/3-extra/1-factorial.js b/3-extra/1-factorial.js
index 31f8052c..230a41dd 100644
--- a/3-extra/1-factorial.js
+++ b/3-extra/1-factorial.js
@@ -9,19 +9,24 @@
 */
 
 function factorial(input) {
-    // TODO
+  // TODO
+  let factor = 1;
+  for (let i = 1; i <= input; i++) {
+    factor *= i;
+  }
+  return factor;
 }
 
 /* ======= TESTS - DO NOT MODIFY ===== */
 
 test("3! should be 6", () => {
-    expect(factorial(3)).toEqual(6);
+  expect(factorial(3)).toEqual(6);
 });
 
 test("5! should be 120", () => {
-    expect(factorial(5)).toEqual(120);
+  expect(factorial(5)).toEqual(120);
 });
 
 test("10! should be 3628800", () => {
-    expect(factorial(10)).toEqual(3628800);
+  expect(factorial(10)).toEqual(3628800);
 });
diff --git a/3-extra/2-array-of-objects.js b/3-extra/2-array-of-objects.js
index ee57960f..dd27224c 100644
--- a/3-extra/2-array-of-objects.js
+++ b/3-extra/2-array-of-objects.js
@@ -11,72 +11,133 @@
 */
 
 function getHighestRatedInEachGenre(books) {
-    // TODO
-}
+  // TODO
+  let children = [];
+  let cooking = [];
+  let nonFiction = [];
+  let rating = [];
+  let newRating = [];
+  for (let i = 0; i < books.length; i++) {
+    if (books[i].genre === "children") {
+      children.push(books[i]);
+    } else if (books[i].genre === "cooking") {
+      cooking.push(books[i]);
+    } else {
+      nonFiction.push(books[i]);
+    }
+  }
+  childrenRating = Object.keys(children).reduce(
+    (acc, curr) =>
+      acc.rating
+        ? children[curr].rating > acc.rating
+          ? children[curr]
+          : acc
+        : children[curr],
+    {}
+  );
+  cookingRating = Object.keys(cooking).reduce(
+    (acc, curr) =>
+      acc.rating
+        ? cooking[curr].rating > acc.rating
+          ? cooking[curr]
+          : acc
+        : cooking[curr],
+    {}
+  );
+  nonFictionRating = Object.keys(nonFiction).reduce(
+    (acc, curr) =>
+      acc.rating
+        ? nonFiction[curr].rating > acc.rating
+          ? nonFiction[curr]
+          : acc
+        : nonFiction[curr],
+    {}
+  );
+
+  let newCookingRating = Object.keys(cookingRating).map(function (key) {
+    return cookingRating[key];
+  });
+  let newChildrenRating = Object.keys(childrenRating).map(function (key) {
+    return childrenRating[key];
+  });
+  let newNonFictionRating = Object.keys(nonFictionRating).map(function (key) {
+    return nonFictionRating[key];
+  });
+
+  rating = newNonFictionRating[0].concat(
+    ",",
+    newChildrenRating[0],
+    ",",
+    newCookingRating[0]
+  );
 
+  newRating = rating.split(",");
+
+  return newRating;
+}
 
 /* ======= Book data - DO NOT MODIFY ===== */
 const BOOKS = [
-    {
-        title: "The Lion, the Witch and the Wardrobe",
-        genre: "children",
-        rating: 4.7
-    },
-    {
-        title: "Sapiens: A Brief History of Humankind",
-        genre: "non-fiction",
-        rating: 4.7
-    },
-    {
-        title: "Nadiya's Fast Flavours",
-        genre: "cooking",
-        rating: 4.7
-    },
-    {
-        title: "Harry Potter and the Philosopher's Stone",
-        genre: "children",
-        rating: 4.8
-    },
-    {
-        title: "A Life on Our Planet",
-        genre: "non-fiction",
-        rating: 4.8
-    },
-    {
-        title: "Dishoom: The first ever cookbook from the much-loved Indian restaurant",
-        genre: "cooking",
-        rating: 4.85
-    },
-    {
-        title: "Gangsta Granny Strikes Again!",
-        genre: "children",
-        rating: 4.9
-    },
-    {
-        title: "Diary of a Wimpy Kid",
-        genre: "children",
-        rating: 4.6
-    },
-    {
-        title: "BOSH!: Simple recipes. Unbelievable results. All plants.",
-        genre: "cooking",
-        rating: 4.6
-    },
-    {
-        title: "The Book Your Dog Wishes You Would Read",
-        genre: "non-fiction",
-        rating: 4.85
-    },
-]
-
+  {
+    title: "The Lion, the Witch and the Wardrobe",
+    genre: "children",
+    rating: 4.7,
+  },
+  {
+    title: "Sapiens: A Brief History of Humankind",
+    genre: "non-fiction",
+    rating: 4.7,
+  },
+  {
+    title: "Nadiya's Fast Flavours",
+    genre: "cooking",
+    rating: 4.7,
+  },
+  {
+    title: "Harry Potter and the Philosopher's Stone",
+    genre: "children",
+    rating: 4.8,
+  },
+  {
+    title: "A Life on Our Planet",
+    genre: "non-fiction",
+    rating: 4.8,
+  },
+  {
+    title:
+      "Dishoom: The first ever cookbook from the much-loved Indian restaurant",
+    genre: "cooking",
+    rating: 4.85,
+  },
+  {
+    title: "Gangsta Granny Strikes Again!",
+    genre: "children",
+    rating: 4.9,
+  },
+  {
+    title: "Diary of a Wimpy Kid",
+    genre: "children",
+    rating: 4.6,
+  },
+  {
+    title: "BOSH!: Simple recipes. Unbelievable results. All plants.",
+    genre: "cooking",
+    rating: 4.6,
+  },
+  {
+    title: "The Book Your Dog Wishes You Would Read",
+    genre: "non-fiction",
+    rating: 4.85,
+  },
+];
 
 /* ======= TESTS - DO NOT MODIFY ===== */
 test("should return the highest rated book in each genre", () => {
-    expect(new Set(getHighestRatedInEachGenre(BOOKS))).toEqual(new Set(
-        [
-            "The Book Your Dog Wishes You Would Read",
-            "Gangsta Granny Strikes Again!",
-            "Dishoom: The first ever cookbook from the much-loved Indian restaurant"
-        ]
-    ));
-});
\ No newline at end of file
+  expect(new Set(getHighestRatedInEachGenre(BOOKS))).toEqual(
+    new Set([
+      "The Book Your Dog Wishes You Would Read",
+      "Gangsta Granny Strikes Again!",
+      "Dishoom: The first ever cookbook from the much-loved Indian restaurant",
+    ])
+  );
+});
diff --git a/3-extra/exe.js b/3-extra/exe.js
new file mode 100644
index 00000000..26e626d7
--- /dev/null
+++ b/3-extra/exe.js
@@ -0,0 +1,124 @@
+/* ======= Book data - DO NOT MODIFY ===== */
+const BOOKS = [
+  {
+    title: "The Lion, the Witch and the Wardrobe",
+    genre: "children",
+    rating: 4.7,
+  },
+  {
+    title: "Sapiens: A Brief History of Humankind",
+    genre: "non-fiction",
+    rating: 4.7,
+  },
+  {
+    title: "Nadiya's Fast Flavours",
+    genre: "cooking",
+    rating: 4.7,
+  },
+  {
+    title: "Harry Potter and the Philosopher's Stone",
+    genre: "children",
+    rating: 4.8,
+  },
+  {
+    title: "A Life on Our Planet",
+    genre: "non-fiction",
+    rating: 4.8,
+  },
+  {
+    title:
+      "Dishoom: The first ever cookbook from the much-loved Indian restaurant",
+    genre: "cooking",
+    rating: 4.85,
+  },
+  {
+    title: "Gangsta Granny Strikes Again!",
+    genre: "children",
+    rating: 4.9,
+  },
+  {
+    title: "Diary of a Wimpy Kid",
+    genre: "children",
+    rating: 4.6,
+  },
+  {
+    title: "BOSH!: Simple recipes. Unbelievable results. All plants.",
+    genre: "cooking",
+    rating: 4.6,
+  },
+  {
+    title: "The Book Your Dog Wishes You Would Read",
+    genre: "non-fiction",
+    rating: 4.85,
+  },
+];
+
+function getHighestRatedInEachGenre(books) {
+  // TODO
+  let children = [];
+  let cooking = [];
+  let nonFiction = [];
+  let rating = [];
+  let newRating = [];
+  for (let i = 0; i < books.length; i++) {
+    if (books[i].genre === "children") {
+      children.push(books[i]);
+    } else if (books[i].genre === "cooking") {
+      cooking.push(books[i]);
+    } else {
+      nonFiction.push(books[i]);
+    }
+  }
+  childrenRating = Object.keys(children).reduce(
+    (acc, curr) =>
+      acc.rating
+        ? children[curr].rating > acc.rating
+          ? children[curr]
+          : acc
+        : children[curr],
+    {}
+  );
+  cookingRating = Object.keys(cooking).reduce(
+    (acc, curr) =>
+      acc.rating
+        ? cooking[curr].rating > acc.rating
+          ? cooking[curr]
+          : acc
+        : cooking[curr],
+    {}
+  );
+  nonFictionRating = Object.keys(nonFiction).reduce(
+    (acc, curr) =>
+      acc.rating
+        ? nonFiction[curr].rating > acc.rating
+          ? nonFiction[curr]
+          : acc
+        : nonFiction[curr],
+    {}
+  );
+
+  let newCookingRating = Object.keys(cookingRating).map(function (key) {
+    return cookingRating[key];
+  });
+  let newChildrenRating = Object.keys(childrenRating).map(function (key) {
+    return childrenRating[key];
+  });
+  let newNonFictionRating = Object.keys(nonFictionRating).map(function (key) {
+    return nonFictionRating[key];
+  });
+
+  rating = newNonFictionRating[0].concat(
+    ",",
+    newChildrenRating[0],
+    ",",
+    newCookingRating[0]
+  );
+
+  newRating = rating.split(",");
+
+  return newRating;
+}
+
+arra = getHighestRatedInEachGenre(BOOKS);
+
+console.log(arra);

From a3c5b3d2b053288188379abd251014d677806ee3 Mon Sep 17 00:00:00 2001
From: Kwanda Silekwa <kwanda9700@gmail.com>
Date: Thu, 21 Jul 2022 18:32:48 +0200
Subject: [PATCH 09/10] Delete exe.js

---
 3-extra/exe.js | 124 -------------------------------------------------
 1 file changed, 124 deletions(-)
 delete mode 100644 3-extra/exe.js

diff --git a/3-extra/exe.js b/3-extra/exe.js
deleted file mode 100644
index 26e626d7..00000000
--- a/3-extra/exe.js
+++ /dev/null
@@ -1,124 +0,0 @@
-/* ======= Book data - DO NOT MODIFY ===== */
-const BOOKS = [
-  {
-    title: "The Lion, the Witch and the Wardrobe",
-    genre: "children",
-    rating: 4.7,
-  },
-  {
-    title: "Sapiens: A Brief History of Humankind",
-    genre: "non-fiction",
-    rating: 4.7,
-  },
-  {
-    title: "Nadiya's Fast Flavours",
-    genre: "cooking",
-    rating: 4.7,
-  },
-  {
-    title: "Harry Potter and the Philosopher's Stone",
-    genre: "children",
-    rating: 4.8,
-  },
-  {
-    title: "A Life on Our Planet",
-    genre: "non-fiction",
-    rating: 4.8,
-  },
-  {
-    title:
-      "Dishoom: The first ever cookbook from the much-loved Indian restaurant",
-    genre: "cooking",
-    rating: 4.85,
-  },
-  {
-    title: "Gangsta Granny Strikes Again!",
-    genre: "children",
-    rating: 4.9,
-  },
-  {
-    title: "Diary of a Wimpy Kid",
-    genre: "children",
-    rating: 4.6,
-  },
-  {
-    title: "BOSH!: Simple recipes. Unbelievable results. All plants.",
-    genre: "cooking",
-    rating: 4.6,
-  },
-  {
-    title: "The Book Your Dog Wishes You Would Read",
-    genre: "non-fiction",
-    rating: 4.85,
-  },
-];
-
-function getHighestRatedInEachGenre(books) {
-  // TODO
-  let children = [];
-  let cooking = [];
-  let nonFiction = [];
-  let rating = [];
-  let newRating = [];
-  for (let i = 0; i < books.length; i++) {
-    if (books[i].genre === "children") {
-      children.push(books[i]);
-    } else if (books[i].genre === "cooking") {
-      cooking.push(books[i]);
-    } else {
-      nonFiction.push(books[i]);
-    }
-  }
-  childrenRating = Object.keys(children).reduce(
-    (acc, curr) =>
-      acc.rating
-        ? children[curr].rating > acc.rating
-          ? children[curr]
-          : acc
-        : children[curr],
-    {}
-  );
-  cookingRating = Object.keys(cooking).reduce(
-    (acc, curr) =>
-      acc.rating
-        ? cooking[curr].rating > acc.rating
-          ? cooking[curr]
-          : acc
-        : cooking[curr],
-    {}
-  );
-  nonFictionRating = Object.keys(nonFiction).reduce(
-    (acc, curr) =>
-      acc.rating
-        ? nonFiction[curr].rating > acc.rating
-          ? nonFiction[curr]
-          : acc
-        : nonFiction[curr],
-    {}
-  );
-
-  let newCookingRating = Object.keys(cookingRating).map(function (key) {
-    return cookingRating[key];
-  });
-  let newChildrenRating = Object.keys(childrenRating).map(function (key) {
-    return childrenRating[key];
-  });
-  let newNonFictionRating = Object.keys(nonFictionRating).map(function (key) {
-    return nonFictionRating[key];
-  });
-
-  rating = newNonFictionRating[0].concat(
-    ",",
-    newChildrenRating[0],
-    ",",
-    newCookingRating[0]
-  );
-
-  newRating = rating.split(",");
-
-  return newRating;
-}
-
-arra = getHighestRatedInEachGenre(BOOKS);
-
-console.log(arra);

From 97d0be4aae985d8461f0fb338a631292a60902fe Mon Sep 17 00:00:00 2001
From: Kwanda Silekwa <kwanda9700@gmail.com>
Date: Thu, 21 Jul 2022 19:05:30 +0200
Subject: [PATCH 10/10] Update 3-fibonacci.js

---
 3-extra/3-fibonacci.js | 29 ++++++++++++++++++-----------
 1 file changed, 18 insertions(+), 11 deletions(-)

diff --git a/3-extra/3-fibonacci.js b/3-extra/3-fibonacci.js
index 9ef9aec7..dcbfa1f6 100644
--- a/3-extra/3-fibonacci.js
+++ b/3-extra/3-fibonacci.js
@@ -14,24 +14,31 @@
 */
 
 function generateFibonacciSequence(n) {
-    // TODO
+  // TODO
+  let fibonacci = [0, 1];
+  let result = [];
+
+  for (let i = 2; i < n; i++) {
+    result = fibonacci[i - 2] + fibonacci[i - 1];
+    fibonacci.push(result);
+  }
+
+  return fibonacci;
 }
 
 /* ======= TESTS - DO NOT MODIFY ===== */
 test("should return the first 10 numbers in the Fibonacci Sequence", () => {
-    expect(generateFibonacciSequence(10)).toEqual(
-        [0, 1, 1, 2, 3, 5, 8, 13, 21, 34]
-    );
+  expect(generateFibonacciSequence(10)).toEqual([
+    0, 1, 1, 2, 3, 5, 8, 13, 21, 34,
+  ]);
 });
 
 test("should return the first 5 numbers in the Fibonacci Sequence", () => {
-    expect(generateFibonacciSequence(5)).toEqual(
-        [0, 1, 1, 2, 3]
-    );
+  expect(generateFibonacciSequence(5)).toEqual([0, 1, 1, 2, 3]);
 });
 
 test("should return the first 15 numbers in the Fibonacci Sequence", () => {
-    expect(generateFibonacciSequence(15)).toEqual(
-        [0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144, 233, 377]
-    );
-});
\ No newline at end of file
+  expect(generateFibonacciSequence(15)).toEqual([
+    0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144, 233, 377,
+  ]);
+});