CodeYourFuture · JihadOmer · Sep 20, 2022 · Sep 23, 2022 · AnoshMalik · Dec 5, 2022
diff --git a/1-exercises/A-undefined/exercise.js b/1-exercises/A-undefined/exercise.js
@@ -9,28 +9,29 @@
     For each example, can you explain why we are seeing undefined?
 */
 
-// Example 1
-let a;
+// Example 1   // => the variable is not assinged to any value.
+let a;  
 console.log(a);
 
 
-// Example 2
+// Example 2 // no returned from the function 
 function sayHello() {
     let message = "Hello";
+    // return message; 
 }
 
 let hello = sayHello();
 console.log(hello);
 
 
-// Example 3
+// Example 3 // no argument in function call
 function sayHelloToUser(user) {
-    console.log(`Hello ${user}`);
+     console.log(`Hello ${user}`);
 }
 
-sayHelloToUser();
+sayHelloToUser(); // index 3 is has no value
 
 
 // Example 4
 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
@@ -1,3 +1,6 @@
+
+
+
 /*
     while loops can be useful when you want to execute some code as long as some condition is true.    
 
@@ -6,7 +9,10 @@
 */
 
 function evenNumbers(n) {
-    // TODO
+    let even = 0;
+    while(n%2 == 0) {
+        console.log(even * 2);
+    }
 }
 
 evenNumbers(3); // should output 0,2,4

diff --git a/1-exercises/C-while-loop-with-array/exercise.js b/1-exercises/C-while-loop-with-array/exercise.js
@@ -17,7 +17,15 @@ const BIRTHDAYS = [
 ];
 
 function findFirstJulyBDay(birthdays) {
-    // TODO
+    let jul = 0;
+    while(jul < BIRTHDAYS.length) {
+
+        if(BIRTHDAYS[jul].includes('July')) {
+            return BIRTHDAYS[jul];
+
+        }
+     jul++
+    }
 }
 
 console.log(findFirstJulyBDay(BIRTHDAYS)); // should output "July 11th"
diff --git a/1-exercises/E-for-loop/exercise1.js b/1-exercises/E-for-loop/exercise1.js
@@ -6,8 +6,8 @@
 
 
 // Change the below code to use a for loop instead of a while loop.
-let i = 0;
-while(i < 26) {
+// let i = 0;
+for (i = 0;i < 26;i++) {
     console.log(String.fromCharCode(97 + i));
     i++;
 }

diff --git a/1-exercises/E-for-loop/exercise2.js b/1-exercises/E-for-loop/exercise2.js
@@ -26,8 +26,14 @@ const AGES = [
     49
 ];
 
-// TODO - Write for loop code here
 
+
+for (i=0; i< AGES.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
@@ -1,5 +1,6 @@
 /*
-    A for-of loop is a easy and way of looping through the elements of an array, string or any other "iterable object" (think sequence of elements).    
+    A for-of loop is a easy and way of looping through the elements of an array, string or any other "iterable object"
+     (think sequence of elements).    
 */
 
 // TODO Use a for-of loop to output each of the tube stations below.
@@ -11,6 +12,14 @@ let tubeStations = [
     "Tottenham Court Road"
 ];
 
+for (let i of tubeStations) {
+    console.log(i);
+}
+
 
 // TODO Use a for-of loop to capitalise and output each letter in the string seperately.
 let str = "codeyourfuture";
+
+for (let j of str) {
+    console.log(j.toUpperCase());
+}
diff --git a/2-mandatory/1-weather-report.js b/2-mandatory/1-weather-report.js
@@ -12,10 +12,24 @@
 */
 
 function getTemperatureReport(cities) {
-    // TODO
+    const temp = [];
+    for(let city in cities ) {
+        temp.push(`the temperature in ${city} is ${temperatureService(city)} degrees`);
+    }
+return temp;
 }
 
 
+
+
+
+
+
+
+
+
+
+
 /* ======= TESTS - DO NOT MODIFY ===== */
 
 function temperatureService(city) {

diff --git a/2-mandatory/2-retrying-random-numbers.js b/2-mandatory/2-retrying-random-numbers.js
@@ -10,9 +10,19 @@ function generateRandomNumber() {
 }
 
 function getRandomNumberGreaterThan50() {
-    // TODO - implement using a do-while loop
+
+    let i = 0;
+    do {
+         let i = generateRandomNumber();
+    }  while(i > 50);
+
+
+    return i;
 }
 
+
+
+
 /* ======= TESTS - DO NOT MODIFY ===== */
 
 test("Returned value should always be greater than 50", () => {

diff --git a/2-mandatory/3-financial-times.js b/2-mandatory/3-financial-times.js
@@ -6,6 +6,10 @@
 */
 function potentialHeadlines(allArticleTitles) {
     // TODO
+    return allArticleTitles.filter(x => x.length <= 65);
+
+
+
 }
 
 /*
@@ -15,6 +19,10 @@ function potentialHeadlines(allArticleTitles) {
 */
 function titleWithFewestWords(allArticleTitles) {
     // TODO
+
+
+    let shortest = allArticleTitles.reduce((shortest, current) => current.length <= shortest.length ? current : shortest);
+    return shortest;
 }
 
 /*
@@ -24,14 +32,29 @@ function titleWithFewestWords(allArticleTitles) {
 */
 function headlinesWithNumbers(allArticleTitles) {
     // TODO
-}
+    let titleWitNum = allArticleTitles.filter((title) =>  {
+           typeof title == 'number'
+
+        });
+        return titleWitNum 
+
+
+    }
+
 
 /*
     The Financial Times wants to understand what the average number of characters in an article title is.
     Implement the function below to return this number - rounded to the nearest integer.
 */
 function averageNumberOfCharacters(allArticleTitles) {
     // TODO
+    let all = 0;
+
+	for (let title of allArticleTitles) {
+		all += title.length;
+	}
+
+	return Math.round(all / allArticleTitles.length);
 }
 
 

diff --git a/3-extra/1-factorial.js b/3-extra/1-factorial.js
@@ -10,6 +10,11 @@
 
 function factorial(input) {
     // TODO
+    let result = 1;
+    for (let i = 1; i<= input; i++) {
+        result*= i;
+    }
+    return result;
 }
 
 /* ======= TESTS - DO NOT MODIFY ===== */