Find the top n
ranked data in each group, where n
is provided as a parameter. Name of the rank and the group are also provided as parameter.
Given the following data:
[
{ name: 'Tyler Bennett', id: 'E10297', salary: 32000, dept: 'D101' },
{ name: 'John Rappl', id: 'E21437', salary: 47000, dept: 'D050' },
{ name: 'George Woltman', id: 'E00127', salary: 53500, dept: 'D101' },
{ name: 'Adam Smith', id: 'E63535', salary: 18000, dept: 'D202' },
{ name: 'Claire Buckman', id: 'E39876', salary: 27800, dept: 'D202' },
{ name: 'David McClellan', id: 'E04242', salary: 41500, dept: 'D101' },
{ name: 'Rich Holcomb', id: 'E01234', salary: 49500, dept: 'D202' },
{ name: 'Nathan Adams', id: 'E41298', salary: 21900, dept: 'D050' },
{ name: 'Richard Potter', id: 'E43128', salary: 15900, dept: 'D101' },
{ name: 'David Motsinger', id: 'E27002', salary: 19250, dept: 'D202' },
{ name: 'Tim Sampair', id: 'E03033', salary: 27000, dept: 'D101' },
{ name: 'Kim Arlich', id: 'E10001', salary: 57000, dept: 'D190' },
{ name: 'Timothy Grove', id: 'E16398', salary: 29900, dept: 'D190' }
];
one could rank top 10 employees in each department by calling
topRankPerGroup(10, data, 'dept', 'salary')
Given the following data:
[
{ name: 'Friday 13th', genre: 'horror', rating: 9.9 },
{ name: "Nightmare on Elm's Street", genre: 'horror', rating: 5.7 },
{ name: 'Titanic', genre: 'drama', rating: 7.3 },
{ name: 'Maze Runner', genre: 'scifi', rating: 7.1 },
{ name: 'Blade runner', genre: 'scifi', rating: 8.9 }
];
one could rank the top-rated movie in each genre by calling
topRankPerGroup(1, data, 'genre', 'rating')
## Instructions
```js
function topRankPerGroup(n, data, groupName, rankName) {
return true;
}
```
### After Test
```js
const testData1 = [
{ name: 'Tyler Bennett', id: 'E10297', salary: 32000, dept: 'D101' },
{ name: 'John Rappl', id: 'E21437', salary: 47000, dept: 'D050' },
{ name: 'George Woltman', id: 'E00127', salary: 53500, dept: 'D101' },
{ name: 'Adam Smith', id: 'E63535', salary: 18000, dept: 'D202' },
{ name: 'Claire Buckman', id: 'E39876', salary: 27800, dept: 'D202' },
{ name: 'David McClellan', id: 'E04242', salary: 41500, dept: 'D101' },
{ name: 'Rich Holcomb', id: 'E01234', salary: 49500, dept: 'D202' },
{ name: 'Nathan Adams', id: 'E41298', salary: 21900, dept: 'D050' },
{ name: 'Richard Potter', id: 'E43128', salary: 15900, dept: 'D101' },
{ name: 'David Motsinger', id: 'E27002', salary: 19250, dept: 'D202' },
{ name: 'Tim Sampair', id: 'E03033', salary: 27000, dept: 'D101' },
{ name: 'Kim Arlich', id: 'E10001', salary: 57000, dept: 'D190' },
{ name: 'Timothy Grove', id: 'E16398', salary: 29900, dept: 'D190' }
];
const res1 = topRankPerGroup(10, testData1, 'dept', 'salary');
const testData2 = [
{ name: 'Friday 13th', genre: 'horror', rating: 9.9 },
{ name: "Nightmare on Elm's Street", genre: 'horror', rating: 5.7 },
{ name: 'Titanic', genre: 'drama', rating: 7.3 },
{ name: 'Maze Runner', genre: 'scifi', rating: 7.1 },
{ name: 'Blade runner', genre: 'scifi', rating: 8.9 }
];
const res2 = topRankPerGroup(1, testData2, 'genre', 'rating');
const res3 = topRankPerGroup(2, testData2, 'genre', 'rating');
```
## Solution