CodeYourFuture · clav00cl · Feb 23, 2023
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 - a wasn't declared 
 let a;
 console.log(a);
 
 
-// Example 2
+// Example 2 - I didn't return any value
 function sayHello() {
     let message = "Hello";
 }
@@ -23,14 +23,14 @@ let hello = sayHello();
 console.log(hello);
 
 
-// Example 3
+// Example 3 - I didn't pass any parameter when I called the function sayHelloToUser
 function sayHelloToUser(user) {
     console.log(`Hello ${user}`);
 }
 
 sayHelloToUser();
 
 
-// Example 4
+// Example 4 - the last number of my array is 3, but the position is 2, so when I call position 3 is undefined
 let arr = [1,2,3];
-console.log(arr[3]);
+console.log(arr[3]);
diff --git a/1-exercises/B-while-loop/exercise.js b/1-exercises/B-while-loop/exercise.js
@@ -6,9 +6,22 @@
 */
 
 function evenNumbers(n) {
-    // TODO
+    let evenNumbersUntiln=0;
+    let i=1;
+
+    while(i < n){
+        evenNumbersUntiln = evenNumbersUntiln + "," + 2 * i;
+        i++;
+    }
+
+    if(n !== 0){
+        return evenNumbersUntiln;
+    } else {
+        return "nothing";
+    }
+
 }
 
-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
+console.log(evenNumbers(3)); // should output 0,2,4
+console.log(evenNumbers(0)); // should output nothing
+console.log(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 +16,18 @@ const BIRTHDAYS = [
     "November 15th"
 ];
 
+let firstBirthday;
+
 function findFirstJulyBDay(birthdays) {
-    // TODO
+    for(let i=0;i<BIRTHDAYS.length;i++){
+        firstBirthday = BIRTHDAYS[i].split(" ");
+        if(firstBirthday[0]=="July"){
+            return BIRTHDAYS[i];
+        }
+    }
 }
 
 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
@@ -5,9 +5,19 @@
 
     Using a do-while loop, write a function which returns the sum of the first n even numbers (starting from 0)
 */
-
 function evenNumbersSum(n) {
-    // TODO
+
+    let evenNumberSumUntiln=0;
+    let sumNum = 0;
+    let counter =0;
+
+    do {
+        evenNumberSumUntiln += sumNum;
+        sumNum += 2;
+        counter++;
+    } while (counter < n);
+
+    return evenNumberSumUntiln;
 }
 
 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 +6,7 @@
 
 
 // Change the below code to use a for loop instead of a while loop.
-let i = 0;
-while(i < 26) {
+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
@@ -26,6 +26,10 @@ const AGES = [
     49
 ];
 
+for(let i=0;i<WRITERS.length;i++){
+    console.log(`${WRITERS[i]} is ${AGES[i]} 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
@@ -11,6 +11,14 @@ let tubeStations = [
     "Tottenham Court Road"
 ];
 
+for(let stations of tubeStations){
+    console.log(stations);
+}
 
 // TODO Use a for-of loop to capitalise and output each letter in the string seperately.
 let str = "codeyourfuture";
+
+for(let letter of str){
+    let capitaliseLetter = letter.toUpperCase();
+    console.log(capitaliseLetter);
+}
diff --git a/2-mandatory/1-weather-report.js b/2-mandatory/1-weather-report.js
@@ -12,52 +12,51 @@
 */
 
 function getTemperatureReport(cities) {
-    // TODO
-}
-
-
-/* ======= 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 cityNameAndDegree = [];
+
+    for (let city of cities) {
+      cityNameAndDegree.push(
+        `The temperature in ${city} is ${temperatureService(city)} degrees`
+      );
+    }
+    return cityNameAndDegree;
+  }
+
+  /* ======= 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);
-}
-
-test("should return a temperature report for the user's cities", () => {
-    let usersCities = [
-        "London",
-        "Paris",
-        "São Paulo"
-    ]
-
+  }
+
+  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"
+      "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"
-    ]
-
+  });
+
+  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"
+      "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", () => {
+  });
+  
+  test("should return an empty array if the user hasn't selected any cities", () => {
     expect(getTemperatureReport([])).toEqual([]);
-});
+  });
diff --git a/2-mandatory/2-retrying-random-numbers.js b/2-mandatory/2-retrying-random-numbers.js
@@ -10,7 +10,13 @@ function generateRandomNumber() {
 }
 
 function getRandomNumberGreaterThan50() {
-    // TODO - implement using a do-while loop
+    let randonNumber;
+
+    do{
+        randonNumber = generateRandomNumber();
+    }while(randonNumber <= 50);
+
+    return randonNumber;
 }
 
 /* ======= TESTS - DO NOT MODIFY ===== */
@@ -21,4 +27,4 @@ test("Returned value should always be greater than 50", () => {
     expect(getRandomNumberGreaterThan50()).toBeGreaterThan(50);
     expect(getRandomNumberGreaterThan50()).toBeGreaterThan(50);
     expect(getRandomNumberGreaterThan50()).toBeGreaterThan(50);
-});
+});
-Original file line number
+Diff line change
@@ Expand Up / @@ -26,6 +26,10 @@ const AGES = [ @@
     ];
+    for(let i=0;i<WRITERS.length;i++){
+        console.log(`${WRITERS[i]} is ${AGES[i]} years old`);
+    }
     // TODO - Write for loop code here
     /*
@@ Expand Down @@