diff --git a/1-exercises/B-array-literals/exercise.js b/1-exercises/B-array-literals/exercise.js index 51eba5cc..c7ffd5dc 100644 --- a/1-exercises/B-array-literals/exercise.js +++ b/1-exercises/B-array-literals/exercise.js @@ -4,9 +4,9 @@ Declare some variables assigned to arrays of values */ -let numbers = []; // add numbers from 1 to 10 into this array +let numbers = [1,2,3,4,5,6,7,8,9,10]; // add numbers from 1 to 10 into this array let mentors; // Create an array with the names of the mentors: Daniel, Irina and Rares - +mentors = ["Daniel","Irina","Rares"] /* DO NOT EDIT BELOW THIS LINE --------------------------- */ diff --git a/1-exercises/C-array-get-set/exercise.js b/1-exercises/C-array-get-set/exercise.js index 5ca911d5..95f0afc9 100644 --- a/1-exercises/C-array-get-set/exercise.js +++ b/1-exercises/C-array-get-set/exercise.js @@ -5,11 +5,14 @@ */ function first(arr) { - return; // complete this statement + return arr[0]; // complete this statement } function last(arr) { - return; // complete this statement + let lastIndex = arr.length; + + return arr[lastIndex-1]; // complete this statement + } /* diff --git a/1-exercises/C-array-get-set/exercises2.js b/1-exercises/C-array-get-set/exercises2.js index 6b6b007a..36d9c411 100644 --- a/1-exercises/C-array-get-set/exercises2.js +++ b/1-exercises/C-array-get-set/exercises2.js @@ -7,7 +7,7 @@ */ let numbers = [1, 2, 3]; // Don't change this array literal declaration - +numbers.push(4); /* DO NOT EDIT BELOW THIS LINE --------------------------- */ diff --git a/1-exercises/D-for-loop/exercise.js b/1-exercises/D-for-loop/exercise.js index 081002b2..28506018 100644 --- a/1-exercises/D-for-loop/exercise.js +++ b/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: diff --git a/1-exercises/E-while-loop-with-array/exercise.js b/1-exercises/E-while-loop-with-array/exercise.js index d584cd75..40efe7e1 100644 --- a/1-exercises/E-while-loop-with-array/exercise.js +++ b/1-exercises/E-while-loop-with-array/exercise.js @@ -18,6 +18,14 @@ const BIRTHDAYS = [ function findFirstJulyBDay(birthdays) { // TODO + let i =0; + while(i { - 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" - ]); + 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", + ]); }); 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" - ]); + let usersCities = ["Barcelona", "Dubai"]; + + expect(getTemperatureReport(usersCities)).toEqual([ + "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", () => { - expect(getTemperatureReport([])).toEqual([]); -}); \ No newline at end of file + expect(getTemperatureReport([])).toEqual([]); +}); diff --git a/2-mandatory/2-financial-times.js b/2-mandatory/2-financial-times.js index 2ce6fb73..bc76a275 100644 --- a/2-mandatory/2-financial-times.js +++ b/2-mandatory/2-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 + // TODO + let result = []; + allArticleTitles.forEach((title) => { + if (title.length <= 65) result.push(title); + }); + return result; } /* @@ -14,7 +19,16 @@ function potentialHeadlines(allArticleTitles) { (you can assume words will always be seperated by a space) */ function titleWithFewestWords(allArticleTitles) { - // TODO + // TODO + let wordsCount = []; + allArticleTitles.forEach((title) => { + let words = title.split(" "); + wordsCount.push(words.length); + }); + let min = Math.min(...wordsCount); + let minIndex = wordsCount.indexOf(min); + let result = allArticleTitles[minIndex]; + return result; } /* @@ -23,59 +37,78 @@ function titleWithFewestWords(allArticleTitles) { (Hint: remember that you can also loop through the characters of a string if you need to) */ function headlinesWithNumbers(allArticleTitles) { - // TODO + // TODO + let result = []; + let array = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]; + allArticleTitles.forEach((title) => { + if (array.some((element) => title.includes(element))) { + result.push(title); + } + }); + return result; } +//npm test -- --testPathPattern 2-financial-times + /* 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 + // TODO + let count = 0; + for (let i = 0; i < allArticleTitles.length; i++) { + count += allArticleTitles[i].length; + number = count / allArticleTitles.length; + } + return Math.round(number); } - - - /* ======= List of Articles - DO NOT MODIFY ===== */ const ARTICLE_TITLES = [ - "Streaming wars drive media groups to spend more than $100bn on new content", - "Amazon Prime Video India country head: streaming is driving a TV revolution", - "Aerospace chiefs prepare for bumpy ride in recovery of long-haul flights", - "British companies look to muscle in on US retail investing boom", - "Libor to take firm step towards oblivion on New Year's Day", - "Audit profession unattractive to new recruits, says PwC boss", - "Chinese social media users blast Elon Musk over near miss in space", - "Companies raise over $12tn in 'blockbuster' year for global capital markets", - "The three questions that dominate investment", - "Brussels urges Chile's incoming president to endorse EU trade deal", + "Streaming wars drive media groups to spend more than $100bn on new content", + "Amazon Prime Video India country head: streaming is driving a TV revolution", + "Aerospace chiefs prepare for bumpy ride in recovery of long-haul flights", + "British companies look to muscle in on US retail investing boom", + "Libor to take firm step towards oblivion on New Year's Day", + "Audit profession unattractive to new recruits, says PwC boss", + "Chinese social media users blast Elon Musk over near miss in space", + "Companies raise over $12tn in 'blockbuster' year for global capital markets", + "The three questions that dominate investment", + "Brussels urges Chile's incoming president to endorse EU trade deal", ]; /* ======= TESTS - DO NOT MODIFY ===== */ test("should only return potential headlines", () => { - expect(new Set(potentialHeadlines(ARTICLE_TITLES))).toEqual(new Set([ - "British companies look to muscle in on US retail investing boom", - "Libor to take firm step towards oblivion on New Year's Day", - "Audit profession unattractive to new recruits, says PwC boss", - "The three questions that dominate investment" - ])); + expect(new Set(potentialHeadlines(ARTICLE_TITLES))).toEqual( + new Set([ + "British companies look to muscle in on US retail investing boom", + "Libor to take firm step towards oblivion on New Year's Day", + "Audit profession unattractive to new recruits, says PwC boss", + "The three questions that dominate investment", + ]) + ); }); test("should return an empty array for empty input", () => { - expect(potentialHeadlines([])).toEqual([]); + expect(potentialHeadlines([])).toEqual([]); }); test("should return the title with the fewest words", () => { - expect(titleWithFewestWords(ARTICLE_TITLES)).toEqual("The three questions that dominate investment"); + expect(titleWithFewestWords(ARTICLE_TITLES)).toEqual( + "The three questions that dominate investment" + ); }); test("should only return headlines containing numbers", () => { - expect(new Set(headlinesWithNumbers(ARTICLE_TITLES))).toEqual(new Set([ - "Streaming wars drive media groups to spend more than $100bn on new content", - "Companies raise over $12tn in 'blockbuster' year for global capital markets" - ])); + expect(new Set(headlinesWithNumbers(ARTICLE_TITLES))).toEqual( + new Set([ + "Streaming wars drive media groups to spend more than $100bn on new content", + "Companies raise over $12tn in 'blockbuster' year for global capital markets", + ]) + ); }); test("should return the average number of characters in a headline", () => { - expect(averageNumberOfCharacters(ARTICLE_TITLES)).toEqual(65); + expect(averageNumberOfCharacters(ARTICLE_TITLES)).toEqual(65); }); diff --git a/2-mandatory/3-stocks.js b/2-mandatory/3-stocks.js index 72d62f94..9a2e6df2 100644 --- a/2-mandatory/3-stocks.js +++ b/2-mandatory/3-stocks.js @@ -11,11 +11,11 @@ const STOCKS = ["aapl", "msft", "amzn", "googl", "tsla"]; const CLOSING_PRICES_LAST_5_DAYS_FOR_ALL_STOCKS = [ - [179.19, 180.33, 176.28, 175.64, 172.99], // AAPL - [340.69, 342.45, 334.69, 333.20, 327.29], // MSFT - [3384.44, 3393.39, 3421.37, 3420.74, 3408.34], // AMZN - [2951.88, 2958.13, 2938.33, 2928.30, 2869.45], // GOOGL - [1101.30, 1093.94, 1067.00, 1008.87, 938.53] // TSLA + [179.19, 180.33, 176.28, 175.64, 172.99], // AAPL + [340.69, 342.45, 334.69, 333.2, 327.29], // MSFT + [3384.44, 3393.39, 3421.37, 3420.74, 3408.34], // AMZN + [2951.88, 2958.13, 2938.33, 2928.3, 2869.45], // GOOGL + [1101.3, 1093.94, 1067.0, 1008.87, 938.53], // TSLA ]; /* @@ -34,7 +34,18 @@ const CLOSING_PRICES_LAST_5_DAYS_FOR_ALL_STOCKS = [ Functions can help with this! */ function getAveragePrices(closingPricesForAllStocks) { - // TODO + // TODO + let result = []; + for (let array of closingPricesForAllStocks) { + let number = 0; + for (let avarage of array) { + number = number + avarage; + } + let calculation = number / array.length; + let rounded = Math.round(calculation * 100) / 100; + result.push(rounded); + } + return result; } /* @@ -48,7 +59,14 @@ 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 + // TODO + let result = []; + for (let array of closingPricesForAllStocks) { + let PriceChanges = array[array.length - 1] - array[0]; + let rounded = Math.round(PriceChanges * 100) / 100; + result.push(rounded); + } + return result; } /* @@ -64,31 +82,46 @@ function getPriceChanges(closingPricesForAllStocks) { The price should be shown with exactly 2 decimal places. */ function highestPriceDescriptions(closingPricesForAllStocks, stocks) { - // TODO -} + // TODO + let hightestPrice = []; + let number = 0; + for (let i = 0; i < stocks.length; ) { + for (let j = 0; j < closingPricesForAllStocks.length; j++) { + number = Math.max(...closingPricesForAllStocks[j]); + hightestPrice.push( + `The highest price of ${stocks[ + i + ].toUpperCase()} in the last 5 days was ${number.toFixed(2)}` + ); + number = 0; + i++; + } + return hightestPrice; + } +} /* ======= TESTS - DO NOT MODIFY ===== */ test("should return the average price for each stock", () => { - expect(getAveragePrices(CLOSING_PRICES_LAST_5_DAYS_FOR_ALL_STOCKS)).toEqual( - [176.89, 335.66, 3405.66, 2929.22, 1041.93] - ); + expect(getAveragePrices(CLOSING_PRICES_LAST_5_DAYS_FOR_ALL_STOCKS)).toEqual([ + 176.89, 335.66, 3405.66, 2929.22, 1041.93, + ]); }); test("should return the price change for each stock", () => { - expect(getPriceChanges(CLOSING_PRICES_LAST_5_DAYS_FOR_ALL_STOCKS)).toEqual( - [-6.2, -13.4, 23.9, -82.43, -162.77] - ); + expect(getPriceChanges(CLOSING_PRICES_LAST_5_DAYS_FOR_ALL_STOCKS)).toEqual([ + -6.2, -13.4, 23.9, -82.43, -162.77, + ]); }); test("should return a description of the highest price for each stock", () => { - expect(highestPriceDescriptions(CLOSING_PRICES_LAST_5_DAYS_FOR_ALL_STOCKS, STOCKS)).toEqual( - [ - "The highest price of AAPL in the last 5 days was 180.33", - "The highest price of MSFT in the last 5 days was 342.45", - "The highest price of AMZN in the last 5 days was 3421.37", - "The highest price of GOOGL in the last 5 days was 2958.13", - "The highest price of TSLA in the last 5 days was 1101.30" - ] - ); + expect( + highestPriceDescriptions(CLOSING_PRICES_LAST_5_DAYS_FOR_ALL_STOCKS, STOCKS) + ).toEqual([ + "The highest price of AAPL in the last 5 days was 180.33", + "The highest price of MSFT in the last 5 days was 342.45", + "The highest price of AMZN in the last 5 days was 3421.37", + "The highest price of GOOGL in the last 5 days was 2958.13", + "The highest price of TSLA in the last 5 days was 1101.30", + ]); });