Commit b35ae98

<html lang="en">

<meta charset="UTF-8">

<title>Array Cardio 💪</title>

<p><em>Psst: have a look at the JavaScript Console</em> 💁</p>

<script>

// Get your shorts on - this is an array workout!

// ## Array Cardio Day 1

// Some data we can work with

const inventors = [

{ first: 'Albert', last: 'Einstein', year: 1879, passed: 1955 },

{ first: 'Isaac', last: 'Newton', year: 1643, passed: 1727 },

{ first: 'Galileo', last: 'Galilei', year: 1564, passed: 1642 },

{ first: 'Marie', last: 'Curie', year: 1867, passed: 1934 },

{ first: 'Johannes', last: 'Kepler', year: 1571, passed: 1630 },

{ first: 'Nicolaus', last: 'Copernicus', year: 1473, passed: 1543 },

{ first: 'Max', last: 'Planck', year: 1858, passed: 1947 },

{ first: 'Katherine', last: 'Blodgett', year: 1898, passed: 1979 },

{ first: 'Ada', last: 'Lovelace', year: 1815, passed: 1852 },

{ first: 'Sarah E.', last: 'Goode', year: 1855, passed: 1905 },

{ first: 'Lise', last: 'Meitner', year: 1878, passed: 1968 },

{ first: 'Hanna', last: 'Hammarström', year: 1829, passed: 1909 }

];

const flavours = ['Chocolate Chip', 'Kulfi', 'Caramel Praline', 'Chocolate', 'Burnt Caramel', 'Pistachio', 'Rose', 'Sweet Coconut', 'Lemon Cookie', 'Toffeeness', 'Toasted Almond', 'Black Raspberry Crunch', 'Chocolate Brownies', 'Pistachio Almond', 'Strawberry', 'Lavender Honey', 'Lychee', 'Peach', 'Black Walnut', 'Birthday Cake', 'Mexican Chocolate', 'Mocha Almond Fudge', 'Raspberry'];

const people = ['Beck, Glenn', 'Becker, Carl', 'Beckett, Samuel', 'Beddoes, Mick', 'Beecher, Henry', 'Beethoven, Ludwig', 'Begin, Menachem', 'Belloc, Hilaire', 'Bellow, Saul', 'Benchley, Robert', 'Benenson, Peter', 'Ben-Gurion, David', 'Benjamin, Walter', 'Benn, Tony', 'Bennington, Chester', 'Benson, Leana', 'Bent, Silas', 'Bentsen, Lloyd', 'Berger, Ric', 'Bergman, Ingmar', 'Berio, Luciano', 'Berle, Milton', 'Berlin, Irving', 'Berne, Eric', 'Bernhard, Sandra', 'Berra, Yogi', 'Berry, Halle', 'Berry, Wendell', 'Bethea, Erin', 'Bevan, Aneurin', 'Bevel, Ken', 'Biden, Joseph', 'Bierce, Ambrose', 'Biko, Steve', 'Billings, Josh', 'Biondo, Frank', 'Birrell, Augustine', 'Black Elk', 'Blair, Robert', 'Blair, Tony', 'Blake, William'];

// Array.prototype.filter()

// 1. Filter the list of inventors for those who were born in the 1500's

console.log("Filter the list of inventors for those who were born in the 1500's:");

const a1 = inventors.filter((item) => {

return item.year > 1501 && item.year < 1599;

})

console.table(a1);

// Array.prototype.map()

// 2. Give us an array of the inventors' first and last names

console.log("inventors' first and last names:");

const a2 = inventors.map((item) => {

return item.first + ' ' + item.last;

})

console.log(a2);

// Array.prototype.sort()

// 3. Sort the inventors by birthdate, oldest to youngest

console.log("oldest to youngest:");

function compareFn1(a, b) {

return a.year < b.year ? -1 : 1;

}

inventors.sort(compareFn1);

console.table(inventors);

// Array.prototype.reduce()

// 4. How many years did all the inventors live?

const sum = inventors.reduce((accumulator, currentValue) => {

return accumulator + currentValue.passed - currentValue.year;

}, 0);

console.log(sum);

// 5. Sort the inventors by years lived

console.log("Sort the inventors by years lived:");

function compareFn2(a, b) {

return a.passed - a.year > b.passed - b.year ? -1 : 1;

}

inventors.sort(compareFn2);

console.table(inventors);

// 6. create a list of Boulevards in Paris that contain 'de' anywhere in the name

// https://en.wikipedia.org/wiki/Category:Boulevards_in_Paris

// 7. sort Exercise

// Sort the people alphabetically by last name

console.log("Sort the people alphabetically by last name:");

function compareFn3(a, b) {

return a.split(", ")[1] < b.split(", ")[1] ? -1 : 1;

}

people.sort(compareFn3);

console.log(people);

// 8. Reduce Exercise

// Sum up the instances of each of these

const data = ['car', 'car', 'truck', 'truck', 'bike', 'walk', 'car', 'van', 'bike', 'walk', 'car', 'van', 'car', 'truck'];

let res = data.reduce((obj, item) => {

debugger

if(obj[item]){

obj[item] ++;

}else{

obj[item] = 1;

}

return obj;

},{})

console.log(res);

</script>