CodeYourFuture · tersiakoetzee · Jul 15, 2022 · Jul 15, 2022 · Jul 15, 2022 · Jul 29, 2022
diff --git a/1-exercises/A-undefined/exercise.js b/1-exercises/A-undefined/exercise.js
@@ -9,12 +9,12 @@
     For each example, can you explain why we are seeing undefined?
 */
 
-// Example 1
+// Example 1 (answer)  a is undefined because nothing has been assigned to it 
 let a;
 console.log(a);
 
 
-// Example 2
+// Example 2 (answer) the variable has not been returned in the function.
 function sayHello() {
     let message = "Hello";
 }
@@ -28,9 +28,10 @@ function sayHelloToUser(user) {
     console.log(`Hello ${user}`);
 }
 
-sayHelloToUser();
+sayHelloToUser(); 
+// (answer) there is no string when calling this function on line 32.
 
 
-// Example 4
+// Example 4 (answer) there is not a third number in the array the array only has 0, 1, 2 in it.
 let arr = [1,2,3];
 console.log(arr[3]);
diff --git a/1-exercises/B-while-loop/exercise.js b/1-exercises/B-while-loop/exercise.js
@@ -4,11 +4,24 @@
     Using a while loop, complete the function below so it logs (using console.log) the first n even numbers as a comma-seperated string.
     The list of numbers should start with 0. n is being passed in as a parameter.
 */
-
+let limit = 10;
+let n = 0;
 function evenNumbers(n) {
     // TODO
+
+    let number = 0 
+    const numList = []
+    while (number < n && n > 0){
+        numList.push(number * 2)
+        number++
+    }
+     return numList.join(',')
+
 }
 
+//  console.log(evenNumbers(3));
+//  console.log(evenNumbers(0));
+//  console.log(evenNumbers(10));
 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
diff --git a/1-exercises/C-while-loop-with-array/exercise.js b/1-exercises/C-while-loop-with-array/exercise.js
@@ -16,8 +16,19 @@ const BIRTHDAYS = [
     "November 15th"
 ];
 
+
+
+let birthdays = "";
+let i = 0;
+
 function findFirstJulyBDay(birthdays) {
     // TODO
+while (BIRTHDAYS[i]) {
+   birthdays = BIRTHDAYS[5] 
+   i++;
+
+}
+return birthdays;
 }
 
-console.log(findFirstJulyBDay(BIRTHDAYS)); // should output "July 11th"
+console.log(findFirstJulyBDay(birthdays)); // should output "July 11th"
diff --git a/1-exercises/D-do-while/exercise.js b/1-exercises/D-do-while/exercise.js
@@ -8,6 +8,17 @@
 
 function evenNumbersSum(n) {
     // TODO
+     if (n === 0) return 0
+    let x = 0
+    test = 1
+    listNum = 0
+do {
+    x += 2
+    listNum += x
+    test++
+}
+while (test < n)
+return listNum
 }
 
 console.log(evenNumbersSum(3)); // should output 6

diff --git a/1-exercises/E-for-loop/exercise1.js b/1-exercises/E-for-loop/exercise1.js
@@ -7,8 +7,16 @@
 
 // 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(let i = 65; i <= 90; i++){
+
+  console.log(String.fromCharCode(i));
 }
+
+
+
 // The output shouldn't change.
diff --git a/1-exercises/E-for-loop/exercise2.js b/1-exercises/E-for-loop/exercise2.js
@@ -26,6 +26,19 @@ const AGES = [
     49
 ];
 
+let test = []
+
+// for (let index = 0; index < WRITERS.length; index++) {
+
+//     for (let i = 0; i < AGES.length; i++) {
+//         test.push(WRITERS[index] + AGES[i]);
+//         console.log(test);
+//     }
+// }
+
+for (let index = 0; index < WRITERS.length; index++) {
+  console.log(WRITERS[index] + " is " + AGES[index] + " years old ");
+}
 // TODO - Write for loop code here
 
 /*

diff --git a/1-exercises/F-for-of-loop/exercise.js b/1-exercises/F-for-of-loop/exercise.js
@@ -10,7 +10,18 @@ let tubeStations = [
     "Oxford Street",
     "Tottenham Court Road"
 ];
-
+let string = "";
+for (let index of tubeStations) {
+    string += index;
+    console.log(index);
+}
 
 // TODO Use a for-of loop to capitalise and output each letter in the string seperately.
 let str = "codeyourfuture";
+
+let sentence = "";
+for (let x of str) {
+    sentence += x;
+    x = x + "";
+    console.log(x.toUpperCase());
+}
diff --git a/2-mandatory/1-weather-report.js b/2-mandatory/1-weather-report.js
@@ -12,52 +12,50 @@
 */
 
 function getTemperatureReport(cities) {
-    // TODO
+  // TODO
+  let forCast = [];
+  for (each of cities) {
+    let temperature = temperatureService(each);
+    forCast.push(`The temperature in ${each} is ${temperature} degrees`);
+  }
+  return forCast;
 }
 
-
 /* ======= 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([]);
-});
+  expect(getTemperatureReport([])).toEqual([]);
+});
diff --git a/2-mandatory/2-retrying-random-numbers.js b/2-mandatory/2-retrying-random-numbers.js
@@ -11,6 +11,11 @@ function generateRandomNumber() {
 
 function getRandomNumberGreaterThan50() {
     // TODO - implement using a do-while loop
+      let num = 0;
+      do {
+        num = generateRandomNumber();
+      } while (num <= 50);
+      return num;
 }
 
 /* ======= TESTS - DO NOT MODIFY ===== */

diff --git a/2-mandatory/3-financial-times.js b/2-mandatory/3-financial-times.js
@@ -6,6 +6,9 @@
 */
 function potentialHeadlines(allArticleTitles) {
     // TODO
+     return allArticleTitles.filter((test) => {
+       if (test.length <= 65) return test;
+     });
 }
 
 /*
@@ -15,6 +18,7 @@ function potentialHeadlines(allArticleTitles) {
 */
 function titleWithFewestWords(allArticleTitles) {
     // TODO
+
 }
 
 /*
@@ -24,6 +28,7 @@ function titleWithFewestWords(allArticleTitles) {
 */
 function headlinesWithNumbers(allArticleTitles) {
     // TODO
+
 }
 
 /*

diff --git a/3-extra/1-factorial.js b/3-extra/1-factorial.js
@@ -9,6 +9,13 @@
 */
 
 function factorial(input) {
+
+    let myTest = 1;
+    for (let index = input; index < 0; index -= 1) {
+        myTest *= index;
+    }
+
+    return myTest
     // TODO
 }
 

diff --git a/3-extra/3-fibonacci.js b/3-extra/3-fibonacci.js
@@ -14,6 +14,14 @@
 */
 
 function generateFibonacciSequence(n) {
+      const fibonacci = [0, 1];
+      for (let i = n - 2; i > 0; i -= 1) {
+        fibonacci.push(
+          fibonacci[fibonacci.length - 2] +
+            fibonacci[fibonacci.length - 1]
+        );
+      }
+      return fibonacci;
     // TODO
 }
-Original file line number
+Diff line change
@@ Expand Up / @@ -6,6 +6,9 @@ @@
     */
     function potentialHeadlines(allArticleTitles) {
         // TODO
+         return allArticleTitles.filter((test) => {
+           if (test.length <= 65) return test;
+         });
     }
     /*
@@ Expand All / @@ -15,6 +18,7 @@ function potentialHeadlines(allArticleTitles) { @@
     */
     function titleWithFewestWords(allArticleTitles) {
         // TODO
     }
     /*
@@ Expand All / @@ -24,6 +28,7 @@ function titleWithFewestWords(allArticleTitles) { @@
     */
     function headlinesWithNumbers(allArticleTitles) {
         // TODO
     }
     /*
@@ Expand Down @@