@@ -62,42 +62,39 @@ const people = [
6262
6363// Array.prototype.filter()
6464// 1. Filter the list of inventors for those who were born in the 1500's
65- // const a = inventors.filter(
66- // (inventor) => inventor.year < 1600 && 1500 <= inventor.year
67- // );
68- // console.table(a);
65+ const a = inventors . filter (
66+ ( inventor ) => inventor . year < 1600 && 1500 <= inventor . year
67+ ) ;
68+ console . table ( a ) ;
6969
7070// Array.prototype.map()
7171// 2. Give us an array of the inventors first and last names
72- // const b = inventors.map((inventor) =>
73- // console.log(`${inventor.first} ${inventor.last}`)
74- // );
72+ const b = inventors . map ( ( inventor ) => `${ inventor . first } ${ inventor . last } ) ;
73+ console . log ( b ) ;
7574
7675// Array.prototype.sort()
7776// 3. Sort the inventors by birthdate, oldest to youngest
78- // const c = inventors.sort((i, l) => i.year - l.year);
79- // console.table(c);
77+ const c = inventors . sort ( ( i , l ) => i . year - l . year ) ;
78+ console . table ( c ) ;
8079
8180// Array.prototype.reduce()
8281// 4. How many years did all the inventors live all together?
83- // let d = inventors.reduce(function (acc, inventor) {
84- // return acc + (inventor.passed - inventor.year);
85- // }, 0);
86- // console.log(d);
82+ const d = inventors . reduce (
83+ ( acc , inventor ) => acc + ( inventor . passed - inventor . year ) ,
84+ 0
85+ ) ;
86+ console . log ( d ) ;
8787
8888// 5. Sort the inventors by years lived
89- // let f = inventors.sort((a, b) => a .passed - b.year);
90- // console.log (f);
89+ let f = inventors . sort ( ( a , b ) => b . passed - b . year - ( a . passed - a . year ) ) ;
90+ console . table ( f ) ;
9191
9292// 6. Create a list of Boulevards in Paris that contain 'de' anywhere in the name
9393// https://en.wikipedia.org/wiki/Category:Boulevards_in_Paris
9494
9595// 7. Sort exercise
9696// Sort the people alphabetically by last name
97- // for (let i = 0; i < people.length; i++) {
98- // let lastName = people[i].split(" ")[1];
99- // console.log();
100- // }
97+ console . log ( people . sort ( ) ) ;
10198
10299// 8. Reduce exercise
103100// Sum up the instances of each of these
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