CodeYourFuture · kavitappatil · Sep 6, 2022 · Sep 6, 2022
diff --git a/1-exercises/A-undefined/exercise.js b/1-exercises/A-undefined/exercise.js
@@ -12,25 +12,25 @@
 // Example 1
 let a;
 console.log(a);
-
+//a has not been assigned any value.
 
 // Example 2
 function sayHello() {
     let message = "Hello";
-}
-
+} 
 let hello = sayHello();
 console.log(hello);
-
+// function has not return value.
 
 // Example 3
 function sayHelloToUser(user) {
     console.log(`Hello ${user}`);
 }
 
 sayHelloToUser();
-
+// function does not pass the parameter value.
 
 // Example 4
 let arr = [1,2,3];
 console.log(arr[3]);
+// index 3 does not exist.
diff --git a/1-exercises/B-while-loop/exercise.js b/1-exercises/B-while-loop/exercise.js
@@ -6,7 +6,17 @@
 */
 
 function evenNumbers(n) {
-    // TODO
+
+    let i = 0;
+
+    while (n  > 0) {
+
+        if(i % 2 == 0){
+            console.log(i);
+            n = n - 1;
+        }
+        i = i + 1;
+    }
 }
 
 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 +17,18 @@ const BIRTHDAYS = [
 ];
 
 function findFirstJulyBDay(birthdays) {
-    // TODO
+    let i = 0;
+    let arrayLength = birthdays.length;
+    while(i < arrayLength) {
+
+        if (birthdays[i].startsWith("July")) {
+            console.log(birthdays[i]);
+            break;
+        }
+
+        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 +7,20 @@
 */
 
 function evenNumbersSum(n) {
-    // TODO
+   let i = 0;
+   let sumofnumbers = 0;
+    do {
+        if(i % 2 == 0) {
+            sumofnumbers = sumofnumbers + i;
+
+            n = n - 1;
+        }
+
+        i = i + 1;
+
+
+    } while (n  > 0)
+    console.log(sumofnumbers);
 }
 
 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 +6,15 @@
 
 
 // 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 (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
@@ -26,7 +26,12 @@ const AGES = [
     49
 ];
 
-// TODO - Write for loop code here
+const combined=[]
+
+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
@@ -11,6 +11,13 @@ let tubeStations = [
     "Tottenham Court Road"
 ];
 
+for (let x of tubeStations) {
+    console.log(text);
+} 
+
 
 // TODO Use a for-of loop to capitalise and output each letter in the string seperately.
 let str = "codeyourfuture";
+for (const value of str) {
+  console.log(value.toUpperCase());
+}
diff --git a/2-mandatory/1-weather-report.js b/2-mandatory/1-weather-report.js
@@ -12,7 +12,12 @@
 */
 
 function getTemperatureReport(cities) {
-    // TODO
+  let tempArray = [];
+  for (i=0; i < cities.length; i++ ) {
+    let deg = temperatureService(cities[i]);
+    tempArray.push(`The temperature in ${cities[i]} is ${deg} degrees`);
+  } 
+  return tempArray;
 }
 
 

diff --git a/2-mandatory/2-retrying-random-numbers.js b/2-mandatory/2-retrying-random-numbers.js
@@ -10,7 +10,11 @@ function generateRandomNumber() {
 }
 
 function getRandomNumberGreaterThan50() {
-    // TODO - implement using a do-while loop
+    let randomNumber = 0;
+    do {
+        randomNumber = generateRandomNumber();
+    }  while ( randomNumber <= 50 );
+    return randomNumber;
 }
 
 /* ======= TESTS - DO NOT MODIFY ===== */

diff --git a/2-mandatory/3-financial-times.js b/2-mandatory/3-financial-times.js
@@ -4,8 +4,16 @@
     The home page of the web site has a headline section, which only has space for article titles which are 65 characters or less.
     Implement the function below, which will return a new array containing only article titles which will fit.
 */
-function potentialHeadlines(allArticleTitles) {
-    // TODO
+function potentialHeadlines(allArticleTitles) 
+{
+    let articleArray = [];
+    {
+        for (const currentArticle of allArticleTitles) {
+            if (currentArticle.length <= 65) {
+                articleArray.push(currentArticle);
+            }
+       }
+    }return articleArray  
 }
 
 /*
@@ -14,7 +22,25 @@ function potentialHeadlines(allArticleTitles) {
     (you can assume words will always be seperated by a space)
 */
 function titleWithFewestWords(allArticleTitles) {
-    // TODO
+    let articleWithFewestWords = 0;
+    let numberOfWords = 0;
+
+    for (const currentArticle of allArticleTitles) {
+
+        numberOfWordsCurrent = currentArticle.length;
+
+        if ( numberOfWords == 0 ) {
+            numberOfWords = numberOfWordsCurrent;
+            articleWithFewestWords = currentArticle;
+        }
+
+        if (numberOfWordsCurrent < numberOfWords) {
+            numberOfWords = numberOfWordsCurrent;
+            articleWithFewestWords = currentArticle;
+        }
+    }
+
+    return articleWithFewestWords;
 }
 
 /*
@@ -23,15 +49,35 @@ function titleWithFewestWords(allArticleTitles) {
     (Hint: remember that you can also loop through the characters of a string if you need to)
 */
 function headlinesWithNumbers(allArticleTitles) {
-    // TODO
+
+    let headlineWithNumbers = [];
+    let digits = /\d+/g;
+    let headlines = potentialHeadlines(allArticleTitles);
+
+    for (const headline in headlines) {
+
+        if (headline.match(digits)) {
+            headlineWithNumbers.push(headline);
+        }
+    }
+
+    return headlineWithNumbers;
+
 }
 
 /*
     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 lengthOfAllArticles = 0;
+
+        for (let i = 0; i < allArticleTitles.length; i++) {
+            lengthOfAllArticles += allArticleTitles[i].length;
+        }
+
+        let averageChar = lengthOfAllArticles / allArticleTitles.length;
+        return Math.round(averageChar);
 }
 
 

diff --git a/2-mandatory/4-stocks.js b/2-mandatory/4-stocks.js
@@ -34,7 +34,19 @@ const CLOSING_PRICES_LAST_5_DAYS_FOR_ALL_STOCKS = [
         Functions can help with this!
 */
 function getAveragePrices(closingPricesForAllStocks) {
-    // TODO
+    let averagePriceArr = [];
+    for (let i = 0; i < closingPricesForAllStocks.length; i++) {
+        let totalStock = 0;
+        let averageStockSum = 0;
+        for (let j = 0; j < closingPricesForAllStocks[i].length; j++) {
+        totalStock += closingPricesForAllStocks[i][j];
+        }
+        averageStockSum = totalStock / closingPricesForAllStocks[i].length;
+        let value = averageStockSum.toFixed(2);
+        averagePriceArr.push(parseFloat(value));
+    }
+
+    return averagePriceArr;
 }
 
 /*
@@ -48,7 +60,18 @@ 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
+    let priceChangeValue = [];
+
+    for (let i = 0; i < closingPricesForAllStocks.length; i++) {
+        let difference = closingPricesForAllStocks[i].length - 1;
+        let totalDifference =
+        closingPricesForAllStocks[i][difference] -
+        closingPricesForAllStocks[i][0];
+
+        priceChangeValue.push(parseFloat(totalDifference.toFixed(2)));
+    }
+
+    return priceChangeValue;
 }
 
 /*
@@ -64,7 +87,21 @@ function getPriceChanges(closingPricesForAllStocks) {
     The price should be shown with exactly 2 decimal places.
 */
 function highestPriceDescriptions(closingPricesForAllStocks, stocks) {
-    // TODO
+    let highestPrices = [];
+
+     for (let i = 0; i < closingPricesForAllStocks.length; i++) {
+       let total = 0;
+       for (let j = 0; j < closingPricesForAllStocks[i].length; j++) {
+         if (closingPricesForAllStocks[i][j] > total) {
+           total = closingPricesForAllStocks[i][j];
+         }
+       }
+       highestPrices.push(
+         `The highest price of ${stocks[i].toUpperCase()} in the last 5 days was ${total.toFixed(2)}`
+       );
+     }
+
+     return highestPrices;
 }