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Glasgow Class 6 - Appolin Semegni Fotso - JavaScript - Week 3 #224

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Glasgow Class 6 - Appolin Semegni Fotso - JavaScript - Week 3 #224

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5b9d226
Passed the test
AppolinFotso Mar 2, 2023
3671ea8
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AppolinFotso Mar 2, 2023
597fafc
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AppolinFotso Mar 3, 2023
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80 changes: 45 additions & 35 deletions 2-mandatory/1-weather-report.js
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Original file line number Diff line number Diff line change
Expand Up @@ -12,52 +12,62 @@
*/

function getTemperatureReport(cities) {
// TODO
const cityList = [
"London",
"Paris",
"Barcelona",
"Dubai",
"Mumbai",
"São Paulo",
"Lagos",
];
const weatherReport = [];
for (let city of cities) {
for (let i = 0; i < cityList.length; i++)
if (city == cityList[i]) {
weatherReport.push(
`The temperature in ${city} is ${temperatureService(city)} degrees`
);
}
}
return weatherReport;
}


/* ======= TESTS - DO NOT MODIFY ===== */

function temperatureService(city) {
let temparatureMap = new Map();

temparatureMap.set('London', 10);
temparatureMap.set('Paris', 12);
temparatureMap.set('Barcelona', 17);
temparatureMap.set('Dubai', 27);
temparatureMap.set('Mumbai', 29);
temparatureMap.set('São Paulo', 23);
temparatureMap.set('Lagos', 33);
return temparatureMap.get(city);
let temparatureMap = new Map();

temparatureMap.set("London", 10);
temparatureMap.set("Paris", 12);
temparatureMap.set("Barcelona", 17);
temparatureMap.set("Dubai", 27);
temparatureMap.set("Mumbai", 29);
temparatureMap.set("São Paulo", 23);
temparatureMap.set("Lagos", 33);

return temparatureMap.get(city);
}

test("should return a temperature report for the user's cities", () => {
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([]);
});
expect(getTemperatureReport([])).toEqual([]);
});
103 changes: 74 additions & 29 deletions 2-mandatory/2-financial-times.js
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Original file line number Diff line number Diff line change
Expand Up @@ -5,7 +5,15 @@
Implement the function below, which will return a new array containing only article titles which will fit.
*/
function potentialHeadlines(allArticleTitles) {
// TODO
// TODO
const articleLength = [];
for (let title of allArticleTitles) {
if (title.length <= 65) {
articleLength.push(title);
}
}

return articleLength;
}

/*
Expand All @@ -14,7 +22,19 @@ function potentialHeadlines(allArticleTitles) {
(you can assume words will always be seperated by a space)
*/
function titleWithFewestWords(allArticleTitles) {
// TODO
// TODO
const titleLength = [];

for (let title of allArticleTitles) {
titleLength.push(title.length);
}

let miniTitle = Math.min(...titleLength);

for (let title of allArticleTitles)
if (title.length == miniTitle) {
return title;
}
Comment on lines +28 to +37

@ManSangSin ManSangSin Mar 13, 2023

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Well done @AppolinFotso. Very cool and clean method to find shortest title. I also just learned of the triple dot operator from your code, looks very useful thank you!

@AppolinFotso AppolinFotso Mar 14, 2023

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Thank you @ManSangSin! I also learned a lot from your codes.

}

/*
Expand All @@ -23,59 +43,84 @@ 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
const alphaNum = [];
for (let title of allArticleTitles) {
let x = 0;

for (let i = 0; i < title.length; i++) {
if (title[i] == Number(title[i]) && title[i] != " ") {
x += title[i];
}
}

if (x > 0) {
alphaNum.push(title);
}
}
return alphaNum;
}

/*
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 x = 0;
for (let title of allArticleTitles) {
x += title.length;
}
let averNum = Math.round(x / allArticleTitles.length);
return averNum;
}



/* ======= 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);
});
77 changes: 53 additions & 24 deletions 2-mandatory/3-stocks.js
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Original file line number Diff line number Diff line change
Expand Up @@ -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
];

/*
Expand All @@ -34,7 +34,18 @@ const CLOSING_PRICES_LAST_5_DAYS_FOR_ALL_STOCKS = [
Functions can help with this!
*/
function getAveragePrices(closingPricesForAllStocks) {
// TODO
// TODO
const averagePrice = [];
for (let arr of closingPricesForAllStocks) {
let x = 0;
for (let i = 0; i < arr.length; i++) {
x += arr[i];
}
let pushValue = Number((x / arr.length).toFixed(2));
averagePrice.push(pushValue);
}

return averagePrice;
}

/*
Expand All @@ -48,7 +59,13 @@ 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
const priceChange = [];
for (let arr of closingPricesForAllStocks) {
priceChange.push(Number((arr[arr.length - 1] - arr[0]).toFixed(2)));
}

return priceChange;
}

/*
Expand All @@ -64,31 +81,43 @@ function getPriceChanges(closingPricesForAllStocks) {
The price should be shown with exactly 2 decimal places.
*/
function highestPriceDescriptions(closingPricesForAllStocks, stocks) {
// TODO
}
// TODO
const highestPrice = [];
for (let arr of closingPricesForAllStocks) {
let x = 0;
let y = 0;
x = Math.max(...arr).toFixed(2);
y = `The highest price of ${stocks[
closingPricesForAllStocks.indexOf(arr)
].toUpperCase()} in the last 5 days was ${x}`;

highestPrice.push(y);
}

return highestPrice;
}

/* ======= 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",
]);
});