London-10-Hussein-Bahdon-JS-1-Week3

1-exercises/A-undefined/exercise.js

@@ -13,15 +13,20 @@
 let a;
 console.log(a);
 
+// a doesnt have a any value;
+
 
 // Example 2
 function sayHello() {
     let message = "Hello";
 }
 
+
 let hello = sayHello();
 console.log(hello);
 
+//in line 25 hello is calling the function instead of setting it to hello;
+
 
 // Example 3
 function sayHelloToUser(user) {

1-exercises/B-array-literals/exercise.js

@@ -4,8 +4,8 @@
   Declare some variables assigned to arrays of values
 */
 
-let numbers = []; // add numbers from 1 to 10 into this array
-let mentors; // Create an array with the names of the mentors: Daniel, Irina and Rares
+let numbers = [1,2,3,4,5,6,7,8,9,10]; // add numbers from 1 to 10 into this array
+let mentors = [" Daniel", "Irina", "Rares"] // Create an array with the names of the mentors: Daniel, Irina and Rares
 
 /* 
   DO NOT EDIT BELOW THIS LINE

1-exercises/C-array-get-set/exercise.js

@@ -5,11 +5,11 @@
 */
 
 function first(arr) {
-  return; // complete this statement
+    return arr[0]
 }
 
 function last(arr) {
-  return; // complete this statement
+  return arr[arr.length - 1];
 }
 
 /* 

1-exercises/C-array-get-set/exercises2.js

@@ -8,13 +8,18 @@
 
 let numbers = [1, 2, 3]; // Don't change this array literal declaration
 
+numbers.push(4);
+numbers[0] = 1;
+
 /* 
   DO NOT EDIT BELOW THIS LINE
   --------------------------- */
 console.log(numbers);
 
 /* 
+
   EXPECTED RESULT
   ---------------
   [1, 2, 3, 4]
+
 */

1-exercises/D-for-loop/exercise.js

@@ -28,6 +28,10 @@ const AGES = [
 
 // 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:
 

1-exercises/E-while-loop-with-array/exercise.js

@@ -1,13 +1,15 @@
 /*
     Loops can be useful when working with arrays.
-    In the below example, imagine we've defined an array holding the birthdays of your closest friends.
-    Use a while loop to search through the array until you find the first birthday in July, then return that birthday from the function.
+    In the below example, imagine we've defined an array holding
+    the birthdays of your closest friends.
+    Use a while loop to search through the array until you find the first birthday in July,
+    then return that birthday from the function.
 */
 
 const BIRTHDAYS = [
-    "January 7th",
-    "February 12th",
-    "April 3rd",
+    "January 7th", 
+    "February 12th", 
+    "April 3rd", 
     "April 5th",
     "May 3rd",
     "July 11th",
@@ -16,8 +18,22 @@ const BIRTHDAYS = [
     "November 15th"
 ];
 
-function findFirstJulyBDay(birthdays) {
-    // TODO
+function findFirstJulyBDay(parameter) {
+
+    let currentIndex = 0;
+
+  while (currentIndex < parameter.length){
+     if (parameter[currentIndex].includes("July")) {
+        return parameter[currentIndex]
+     }else {
+        currentIndex++;
+     }
+    //  console.log(parameter[currentIndex])
+ }
+ return "no July here"
+
 }
 
+
+
 console.log(findFirstJulyBDay(BIRTHDAYS)); // should output "July 11th"

2-mandatory/1-weather-report.js

@@ -10,11 +10,16 @@
             For example, "The temperature in London is 10 degrees"
         - Hint: you can call the temperatureService function from your function
 */
-
 function getTemperatureReport(cities) {
-    // TODO
-}
-
+    const reports = [];
+
+    for (let i = 0; i < cities.length; i++) {
+      const temperature = temperatureService(cities[i]);
+      reports.push(`The temperature in ${cities[i]} is ${temperature} degrees`);
+    }
+
+    return reports;
+  }
 
 /* ======= TESTS - DO NOT MODIFY ===== */
 

2-mandatory/2-financial-times.js

@@ -1,11 +1,27 @@
 /*
-    Imagine you are working on the Financial Times web site! They have a list of article titles stored in an array.
+    Imagine you are working on the Financial Times web site!
+
+    They have a list of article titles stored in an array.
+
+    The home page of the web site has a headline section, which only has space for article titles 
+    which are 65 characters or less.
 
-    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
+    const container = []
+
+    for (let i = 0; i < allArticleTitles.length; i++) {
+        const titleContainter = allArticleTitles[i];
+        if (titleContainter.length <= 65) {
+            container.push(titleContainter)
+        }
+
+
+    }
+
+    return container
+
 }
 
 /*
@@ -14,25 +30,51 @@ function potentialHeadlines(allArticleTitles) {
     (you can assume words will always be seperated by a space)
 */
 function titleWithFewestWords(allArticleTitles) {
-    // TODO
-}
-
+    let fewestWords = allArticleTitles[0];
+
+    for (let i = 1; i < allArticleTitles.length; i++) {
+      if (allArticleTitles[i].split(' ').length < fewestWords.split(' ').length) {
+        fewestWords = allArticleTitles[i];
+      }
+    }
+    return fewestWords;
+  }
 /*
     The editor of the FT has realised 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)
 */
 function headlinesWithNumbers(allArticleTitles) {
-    // TODO
-}
+    const container = [];
+
+    for (let i = 0; i < allArticleTitles.length; i++) {
+      const title = allArticleTitles[i];
+      for (let j = 0; j < title.length; j++) {
+        if (!isNaN(parseInt(title[j]))) {
+          container.push(title);
+          break;
+        }
+      }
+    }
+
+    return container;
+  }
 
 /*
     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 chars = 0;
+
+    for (let i = 0; i < allArticleTitles.length; i++) {
+      chars += allArticleTitles[i].length;
+    }
+
+    const averageChars = chars / allArticleTitles.length;
+
+    return Math.round(averageChars);
+  }
 
 
 

2-mandatory/3-stocks.js

@@ -34,8 +34,23 @@ const CLOSING_PRICES_LAST_5_DAYS_FOR_ALL_STOCKS = [
         Functions can help with this!
 */
 function getAveragePrices(closingPricesForAllStocks) {
-    // TODO
-}
+    const result = [];
+
+    for (let i = 0; i < closingPricesForAllStocks.length; i++) {
+      const stockPrices = closingPricesForAllStocks[i];
+      let sum = 0;
+
+      for (let j = 0; j < stockPrices.length; j++) {
+        sum += stockPrices[j];
+      }
+
+      const average = sum / stockPrices.length;
+      result.push(parseFloat(average.toFixed(2)));
+    }
+
+    return result;
+  }
+
 
 /*
     We also want to see what the change in price is from the first day to the last day for each stock.
@@ -48,8 +63,19 @@ 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
-}
+    const priceChanges = [];
+
+    for (let i = 0; i < closingPricesForAllStocks.length; i++) {
+      const stockPrices = closingPricesForAllStocks[i];
+      const firstDayPrice = stockPrices[0];
+      const lastDayPrice = stockPrices[stockPrices.length - 1];
+      const priceChange = lastDayPrice - firstDayPrice;
+      priceChanges.push(parseFloat(priceChange.toFixed(2)));
+    }
+
+    return priceChanges;
+  }
+
 
 /*
     As part of a financial report, we want to see what the highest price was for each stock in the last 5 days.
@@ -64,8 +90,19 @@ function getPriceChanges(closingPricesForAllStocks) {
     The price should be shown with exactly 2 decimal places.
 */
 function highestPriceDescriptions(closingPricesForAllStocks, stocks) {
-    // TODO
-}
+    const descriptions = [];
+
+    for (let i = 0; i < stocks.length; i++) {
+      const stock = stocks[i];
+      const closingPrices = closingPricesForAllStocks[i];
+      const highestPrice = Math.max(...closingPrices).toFixed(2);
+
+      descriptions.push(`The highest price of ${stock.toUpperCase()} in the last 5 days was ${highestPrice}`);
+    }
+
+    return descriptions;
+  }
+
 
 
 /* ======= TESTS - DO NOT MODIFY ===== */