N max elements
JavaScript, Math · Oct 21, 2020
Returns the n maximum elements from the provided array.
- Use
Array.prototype.sort()combined with the spread operator (...) to create a shallow clone of the array and sort it in descending order. - Use
Array.prototype.slice()to get the specified number of elements. - Omit the second argument,
n, to get a one-element array. - If
nis greater than or equal to the provided array's length, then return the original array (sorted in descending order).
const maxN = (arr, n = 1) => [...arr].sort((a, b) => b - a).slice(0, n);maxN([1, 2, 3]); // [3]
maxN([1, 2, 3], 2); // [3, 2]
