1+ // Get your shorts on - this is an array workout!
2+ // ## Array Cardio Day 1
3+
4+ // Some data we can work with
5+
6+ const inventors = [
7+ { first : 'Albert' , last : 'Einstein' , year : 1879 , passed : 1955 } ,
8+ { first : 'Isaac' , last : 'Newton' , year : 1643 , passed : 1727 } ,
9+ { first : 'Galileo' , last : 'Galilei' , year : 1564 , passed : 1642 } ,
10+ { first : 'Marie' , last : 'Curie' , year : 1867 , passed : 1934 } ,
11+ { first : 'Johannes' , last : 'Kepler' , year : 1571 , passed : 1630 } ,
12+ { first : 'Nicolaus' , last : 'Copernicus' , year : 1473 , passed : 1543 } ,
13+ { first : 'Max' , last : 'Planck' , year : 1858 , passed : 1947 } ,
14+ { first : 'Katherine' , last : 'Blodgett' , year : 1898 , passed : 1979 } ,
15+ { first : 'Ada' , last : 'Lovelace' , year : 1815 , passed : 1852 } ,
16+ { first : 'Sarah E.' , last : 'Goode' , year : 1855 , passed : 1905 } ,
17+ { first : 'Lise' , last : 'Meitner' , year : 1878 , passed : 1968 } ,
18+ { first : 'Hanna' , last : 'Hammarström' , year : 1829 , passed : 1909 }
19+ ] ;
20+
21+ const people = [
22+ 'Bernhard, Sandra' , 'Bethea, Erin' , 'Becker, Carl' , 'Bentsen, Lloyd' , 'Beckett, Samuel' , 'Blake, William' , 'Berger, Ric' , 'Beddoes, Mick' , 'Beethoven, Ludwig' ,
23+ 'Belloc, Hilaire' , 'Begin, Menachem' , 'Bellow, Saul' , 'Benchley, Robert' , 'Blair, Robert' , 'Benenson, Peter' , 'Benjamin, Walter' , 'Berlin, Irving' ,
24+ 'Benn, Tony' , 'Benson, Leana' , 'Bent, Silas' , 'Berle, Milton' , 'Berry, Halle' , 'Biko, Steve' , 'Beck, Glenn' , 'Bergman, Ingmar' , 'Black, Elk' , 'Berio, Luciano' ,
25+ 'Berne, Eric' , 'Berra, Yogi' , 'Berry, Wendell' , 'Bevan, Aneurin' , 'Ben-Gurion, David' , 'Bevel, Ken' , 'Biden, Joseph' , 'Bennington, Chester' , 'Bierce, Ambrose' ,
26+ 'Billings, Josh' , 'Birrell, Augustine' , 'Blair, Tony' , 'Beecher, Henry' , 'Biondo, Frank'
27+ ] ;
28+
29+ // Array.prototype.filter()
30+ // 1. Filter the list of inventors for those who were born in the 1500's
31+ const fifteen = inventors . filter ( inventor => {
32+ if ( inventor . year >= 1500 && inventor . year < 1600 ) return true
33+ } ) ;
34+ console . table ( fifteen ) ;
35+
36+ // Array.prototype.map()
37+ // 2. Give us an array of the inventors first and last names
38+ const fullNames = inventors . map ( inventor => `${ inventor . first } ${ inventor . last } )
39+
40+ console . table ( fullNames ) ;
41+
42+
43+ // Array.prototype.sort()
44+ // 3. Sort the inventors by birth date, oldest to youngest
45+ const ordered = inventors . sort ( ( a , b ) => a . year > b . year ? 1 : - 1 )
46+
47+ console . table ( ordered )
48+
49+
50+ // Array.prototype.reduce()
51+ // 4. How many years did all the inventors live all together?
52+ const totalYears = inventors . reduce ( ( total , inventor ) => {
53+ return total + ( inventor . passed - inventor . year )
54+ } , 0 )
55+
56+ console . table ( totalYears )
57+
58+ // 5. Sort the inventors by years lived
59+ const oldest = inventors . sort ( function ( a , b ) {
60+ const lastGuys = a . passed - a . year ;
61+ const nextGuy = b . passed - b . year ;
62+ return lastGuys > nextGuy ? - 1 : 1 ;
63+ } ) ;
64+ console . table ( oldest )
65+
66+
67+ // 6. create a list of Boulevards in Paris that contain 'de' anywhere in the name
68+ // https://en.wikipedia.org/wiki/Category:Boulevards_in_Paris
69+ // const category = document.querySelector('.mw-category');
70+ // const links = Array.from(category.querySelectorAll('a'));
71+
72+ // const de = links
73+ // .map(link => link.textContent)
74+ // .filter(streetName => streetName.includes('de'))
75+
76+
77+
78+ // 7. sort Exercise
79+ // Sort the people alphabetically by last name
80+
81+ const alpha = people . sort ( ( lastOne , nextOne ) => {
82+ const [ alast , afirst ] = lastOne . split ( ', ' ) ;
83+ const [ blast , bfirst ] = nextOne . split ( ', ' ) ;
84+ return alast > blast ? 1 : - 1 ;
85+ } )
86+
87+ console . log ( alpha )
88+
89+ // 8. Reduce Exercise
90+ // Sum up the instances of each of these
91+ const data = [ 'car' , 'car' , 'truck' , 'truck' , 'bike' , 'walk' , 'car' , 'van' , 'bike' , 'walk' , 'car' , 'van' , 'car' , 'truck' ] ;
92+
93+ const transportation = data . reduce ( function ( obj , item ) {
94+ if ( ! obj [ item ] ) {
95+ obj [ item ] = 0 ;
96+ }
97+ obj [ item ] ++ ;
98+ return obj ;
99+ } , { } )
100+
101+ console . log ( transportation )
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