CodeYourFuture · mickeyhaile2 · Dec 4, 2022 · Dec 5, 2022 · Dec 9, 2022 · JDysiewicz
diff --git a/1-exercises/A-undefined/exercise.js b/1-exercises/A-undefined/exercise.js
@@ -12,25 +12,26 @@
 // Example 1
 let a;
 console.log(a);
-
+/* a is not defined */
 
 // Example 2
 function sayHello() {
     let message = "Hello";
 }
-
+/* there is no return */
 let hello = sayHello();
 console.log(hello);
-
+/* hello is a variable not a function */
 
 // Example 3
 function sayHelloToUser(user) {
     console.log(`Hello ${user}`);
 }
 
 sayHelloToUser();
-
+/*needs a parameter*/
 
 // Example 4
 let arr = [1,2,3];
 console.log(arr[3]);
+/* there is no index 3 */
diff --git a/1-exercises/B-while-loop/exercise.js b/1-exercises/B-while-loop/exercise.js
@@ -7,7 +7,14 @@
 
 function evenNumbers(n) {
     // TODO
+    i = 0;
+    let even = [];
+    while (i < 2 * n){
+    even.push(i);}
+    i += 2
+    return even.toString()
 }
+console.log(evenNumbers(3));
 
 evenNumbers(3); // should output 0,2,4
 evenNumbers(0); // should output nothing

diff --git a/1-exercises/C-while-loop-with-array/exercise.js b/1-exercises/C-while-loop-with-array/exercise.js
@@ -17,7 +17,12 @@ const BIRTHDAYS = [
 ];
 
 function findFirstJulyBDay(birthdays) {
-    // TODO
+   let i=0;
+     while(!(birthdays[i].includes("July"))){
+
+         i++;
+     }
+     return birthdays[i]; // TODO
 }
 
 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 +7,15 @@
 */
 
 function evenNumbersSum(n) {
-    // TODO
+    let i=0;
+     let sumEven=0;
+     do{
+         sumEven+=(i*2)
+         i++;
+     }
+     while ( i<n);
+
+     return (sumEven);// TODO
 }
 
 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
@@ -6,6 +6,10 @@
 
 
 // Change the below code to use a for loop instead of a while loop.
+for ( let i = 0; i < 26; i++ ){
+    console.log(String.fromCharCode(97 + i));
+}
+
 let i = 0;
 while(i < 26) {
     console.log(String.fromCharCode(97 + i));

diff --git a/1-exercises/E-for-loop/exercise2.js b/1-exercises/E-for-loop/exercise2.js
@@ -27,7 +27,9 @@ const AGES = [
 ];
 
 // TODO - Write for loop code here
-
+for (let i=0;i<WRITERS.length-1;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 +10,11 @@ let tubeStations = [
     "Oxford Street",
     "Tottenham Court Road"
 ];
-
+for (let tubeStation of tubeStations){
+     console.log (tubeStation.toUpperCase())
+ }
 
 // TODO Use a for-of loop to capitalise and output each letter in the string seperately.
 let str = "codeyourfuture";
+for( char of str){
+     console.log (char.toUpperCase())}
diff --git a/2-mandatory/1-weather-report.js b/2-mandatory/1-weather-report.js
@@ -13,7 +13,16 @@
 
 function getTemperatureReport(cities) {
     // TODO
-}
+    let cityTemp = [];
+   for (let i = 0; i < cities.length; i++) {
+     cityTemp.push(`The temperature in ${cities[i]} is ${temperatureService(
+         cities[i]
+       )} degrees`
+     );
+   }
+   return cityTemp;
+ }
+
 
 
 /* ======= TESTS - DO NOT MODIFY ===== */

diff --git a/2-mandatory/2-retrying-random-numbers.js b/2-mandatory/2-retrying-random-numbers.js
@@ -11,6 +11,13 @@ 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
@@ -5,7 +5,12 @@
     Implement the function below, which will return a new array containing only article titles which will fit.
 */
 function potentialHeadlines(allArticleTitles) {
-    // TODO
+     let newArr = [];
+   for (let title of allArticleTitles) {
+     if (title.length < 65) newArr.push(title);
+   }
+   return newArr;
+
 }
 
 /*
@@ -15,6 +20,25 @@ function potentialHeadlines(allArticleTitles) {
 */
 function titleWithFewestWords(allArticleTitles) {
     // TODO
+    for (var i = 0; i < allArticleTitles.length; i++) {
+     // Last i elements are already in place
+     for (var j = 0; j < allArticleTitles.length - i - 1; j++) {
+       // Checking if the item at present iteration
+       // is greater than the next iteration
+       if (
+         allArticleTitles[j].split(" ").length >
+         allArticleTitles[j + 1].split(" ").length
+       ) {
+         // If the condition is true then swap them
+         var temp = allArticleTitles[j];
+         allArticleTitles[j] = allArticleTitles[j + 1];
+         allArticleTitles[j + 1] = temp;
+       }
+     }
+   }
+
+   return allArticleTitles[0];
+
 }
 
 /*
@@ -24,6 +48,15 @@ function titleWithFewestWords(allArticleTitles) {
 */
 function headlinesWithNumbers(allArticleTitles) {
     // TODO
+    let newArr = [];
+   for (let title of allArticleTitles) {
+     if (/[0-9]/.test(title) === true) {
+       newArr.push(title);
+     }
+   }
+
+   return newArr;
+
 }
 
 /*
@@ -32,6 +65,13 @@ function headlinesWithNumbers(allArticleTitles) {
 */
 function averageNumberOfCharacters(allArticleTitles) {
     // TODO
+    let sum = 0;
+
+   for (let title of allArticleTitles) {
+     sum += title.length;
+   }
+
+   return Math.round(sum / allArticleTitles.length);
 }
 
 

diff --git a/2-mandatory/4-stocks.js b/2-mandatory/4-stocks.js
@@ -34,8 +34,24 @@ const CLOSING_PRICES_LAST_5_DAYS_FOR_ALL_STOCKS = [
         Functions can help with this!
 */
 function getAveragePrices(closingPricesForAllStocks) {
-    // TODO
-}
+    let arrayWithAveragePrices = [];
+   //looping through array of arrays and calling findAveragePrice method on each array
+   for (let arrayWithPrices of closingPricesForAllStocks) {
+     arrayWithAveragePrices.push(findAveragePrice(arrayWithPrices));
+   }
+   return arrayWithAveragePrices;
+ }
+
+ //function to find average price in array
+ function findAveragePrice(array) {
+   let sum = 0;
+   for (let price of array) {
+     sum += price;
+   }
+   return Number((sum / array.length).toFixed(2));
+ }
+
+
 
 /*
     We also want to see what the change in price is from the first day to the last day for each stock.
@@ -48,7 +64,14 @@ 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 changedPrices = [];
+   for (let arrayWithPrices of closingPricesForAllStocks) {
+     let changedPrice =
+       arrayWithPrices[arrayWithPrices.length - 1] - arrayWithPrices[0];
+     changedPrices.push(Number(changedPrice.toFixed(2)));
+   }
+   return changedPrices;
+
 }
 
 /*
@@ -64,7 +87,18 @@ function getPriceChanges(closingPricesForAllStocks) {
     The price should be shown with exactly 2 decimal places.
 */
 function highestPriceDescriptions(closingPricesForAllStocks, stocks) {
-    // TODO
+     let arrayWithStrings = []; //creating new array
+
+   // looping through array with prices
+   for (let i = 0; i < stocks.length; i++) {
+     let stockName = stocks[i].toUpperCase(); //capitalising the name of stock
+     let biggestPrice = Math.max(...closingPricesForAllStocks[i]); //getting the max value in array
+     let convertedPrice = biggestPrice.toFixed(2); //making 2 decimals and leaving it as a String
+     arrayWithStrings.push(
+       `The highest price of ${stockName} in the last 5 days was ${convertedPrice}`
+     ); //adding a String to a new array
+   }
+   return arrayWithStrings;
 }