CodeYourFuture · AlessandraCYF · Aug 29, 2022 · Sep 1, 2022 · Sep 1, 2022 · Pat-On
diff --git a/1-exercises/A-undefined/exercise.js b/1-exercises/A-undefined/exercise.js
@@ -12,7 +12,7 @@
 // Example 1
 let a;
 console.log(a);
-
+//Answer: a is not defined.
 
 // Example 2
 function sayHello() {
@@ -21,16 +21,18 @@ function sayHello() {
 
 let hello = sayHello();
 console.log(hello);
-
+//Answer: No value returned by the function.
 
 // Example 3
 function sayHelloToUser(user) {
     console.log(`Hello ${user}`);
 }
+//Answer:The variables haven't been declared.
 
 sayHelloToUser();
 
 
 // Example 4
 let arr = [1,2,3];
 console.log(arr[3]);
+//Answer:Zero index, meaning that we only have up to index 2. Index position 3 does not exist.
diff --git a/1-exercises/B-while-loop/exercise.js b/1-exercises/B-while-loop/exercise.js
@@ -1,14 +1,25 @@
 /*
     while loops can be useful when you want to execute some code as long as some condition is true.    
 
-    Using a while loop, complete the function below so it logs (using console.log) the first n even numbers as a comma-seperated string.
+    Using a while loop, complete the function below so it logs (using console.log) the first n even numbers as a comma-separated string.
     The list of numbers should start with 0. n is being passed in as a parameter.
 */
 
 function evenNumbers(n) {
-    // TODO
+ let array = []
+ let i = 0;
+ while (i < n) {
+    array.push(i * 2);
+    i++
+ }
+ console.log(array.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
+
+
+
diff --git a/1-exercises/C-while-loop-with-array/exercise.js b/1-exercises/C-while-loop-with-array/exercise.js
@@ -17,7 +17,13 @@ const BIRTHDAYS = [
 ];
 
 function findFirstJulyBDay(birthdays) {
-    // TODO
+    let i = 0;
+    while (i < birthdays.length) {
+        if (birthdays[i].includes("July")){
+            return birthdays[i];
+        }
+        i++
+    }
 }
 
 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
@@ -7,7 +7,13 @@
 */
 
 function evenNumbersSum(n) {
-    // TODO
+let sum = 0; 
+let i = 0;           //starting from zero
+do {
+ sum = i * (i + 1);  //formula for the sum of consecutive even numbers: n(n+1) or JSshort: sum+= i * 2
+i++;
+} while (i < n);
+return sum;
 }
 
 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
@@ -6,9 +6,11 @@
 
 
 // Change the below code to use a for loop instead of a while loop.
-let i = 0;
-while(i < 26) {
+//let i = 0;
+//while(i < 26) {
+    //console.log(String.fromCharCode(97 + i));
+    //i++;
+    for (let i = 0; i < 26; i++) {
     console.log(String.fromCharCode(97 + i));
-    i++;
 }
 // The output shouldn't change.
diff --git a/1-exercises/E-for-loop/exercise2.js b/1-exercises/E-for-loop/exercise2.js
@@ -25,9 +25,9 @@ const AGES = [
     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
@@ -10,7 +10,14 @@ let tubeStations = [
     "Oxford Street",
     "Tottenham Court Road"
 ];
+for (let tubeStation of tubeStations) {
+    console.log(tubeStation);
+  }
 
 
-// TODO Use a for-of loop to capitalise and output each letter in the string seperately.
+// TODO Use a for-of loop to capitalize and output each letter in the string separately. //Separately = different line?
 let str = "codeyourfuture";
+
+for (let char of str) {
+console.log(char.toUpperCase());
+}
diff --git a/2-mandatory/1-weather-report.js b/2-mandatory/1-weather-report.js
@@ -2,7 +2,7 @@
     Imagine we're making a weather app!
 
     We have a list of cities that the user wants to track.
-    We also already have a temperatureService function which will take a city as a parameter and return a temparature.
+    We also already have a temperatureService function which will take a city as a parameter and return a temperature.
 
     Implement the function below:
         - take the array of cities as a parameter
@@ -12,24 +12,31 @@
 */
 
 function getTemperatureReport(cities) {
-    // TODO
-}
+    let citiesTemp = []; 
+    for (city of cities) {
+        let temp = temperatureService(city);
+        citiesTemp.push(`The temperature in ${city} is ${temperatureService(city)} degrees`);
+      }
+      return citiesTemp;  
+    }
+
+
 
 
 /* ======= 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);
+    let temperatureMap  = new Map();
+
+    temperatureMap.set('London', 10);
+    temperatureMap.set('Paris', 12);
+    temperatureMap.set('Barcelona', 17);
+    temperatureMap.set('Dubai', 27);
+    temperatureMap.set('Mumbai', 29);
+    temperatureMap.set('São Paulo', 23);
+    temperatureMap.set('Lagos', 33);
 
-    return temparatureMap.get(city);
+    return temperatureMap.get(city);
 }
 
 test("should return a temperature report for the user's cities", () => {

diff --git a/2-mandatory/2-retrying-random-numbers.js b/2-mandatory/2-retrying-random-numbers.js
@@ -11,7 +11,13 @@ function generateRandomNumber() {
 
 function getRandomNumberGreaterThan50() {
     // TODO - implement using a do-while loop
-}
+    //let value;
+    do {
+        value =  generateRandomNumber();
+     } while( value <= 50)
+     return value;
+    }
+
 
 /* ======= TESTS - DO NOT MODIFY ===== */
 

diff --git a/2-mandatory/3-financial-times.js b/2-mandatory/3-financial-times.js
@@ -5,20 +5,27 @@
     Implement the function below, which will return a new array containing only article titles which will fit.
 */
 function potentialHeadlines(allArticleTitles) {
-    // TODO
-}
+    let conformingTitles = [];
+    for (let i = 0; i < allArticleTitles.length; i++) {
+      if (allArticleTitles[i].length < 65) {
+        conformingTitles.push(allArticleTitles[i]);
+      }
+    }
+    return conformingTitles;
+  }
+
 
 /*
     The editor of the FT likes short headlines with only a few words!
     Implement the function below, which returns the title with the fewest words.
-    (you can assume words will always be seperated by a space)
+    (you can assume words will always be separated by a space)
 */
 function titleWithFewestWords(allArticleTitles) {
-    // TODO
+
 }
 
 /*
-    The editor of the FT has realised that headlines which have numbers in them get more clicks!
+    The editor of the FT has realized that headlines which have numbers in them get more clicks!
     Implement the function below to return a new array containing all the headlines which contain a number.
     (Hint: remember that you can also loop through the characters of a string if you need to)
 */