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array.html
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<html>
<head>
<meta charset="UTF-8">
<title>Array Cardio</title>
</head>
<body>
<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 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
const born=inventors.filter(inventors => inventors.year>1500 && inventors.year<1600);
console.log(born);
// Array.prototype.map()
// 2. Give us an array of the inventors first and last names
const name=inventors.map(inventors => inventors.first+" "+inventors.last);
console.log(name);
// Array.prototype.sort()
// 3. Sort the inventors by birthdate, oldest to youngest
const birth=inventors.sort(function(a,b){
if(a.year>b.year){
return -1;
}
else{
return 1;
}
});
console.log(birth);
// Array.prototype.reduce()
// 4. How many years did all the inventors live all together?
var total=0;
for(var i=0;i<inventors.length;i++){
total=total+(inventors[i].passed-inventors[i].year);
}
console.log(total);
// 5. Sort the inventors by years lived
const lived=inventors.sort(function(a,b){
if(a.passed-a.year>b.year-b.passed){
return 1;
}
else{
return -1;
}
})
console.log(lived);
// 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
const lastname=people.sort(function(a,b){
const partsa=a.split(',');
const partsb=b.split(',');
if(partsa[0]>partsb[0]){
return 1;
}
else{
return -1;
}
})
for(var j=0;j<lastname.length;j++){
var arr=lastname[j].split(',');
console.log(arr[0]+" "+arr[1]);
}
// 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' ];
const sum=data.reduce(function(a,b){
if(!a[b]){
a[b]=0;
}
a[b]++;
return a;
},{})
console.log(sum);
</script>
</body>
</html>