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2724. Sort By

Easy

Given an array arr and a function fn, return a sorted array sortedArr. You can assume fn only returns numbers and those numbers determine the sort order of sortedArr. sortedArr must be sorted in ascending order by fn output.

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You may assume that fn will never duplicate numbers for a given array.

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Example 1:

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+Input: arr = [5, 4, 1, 2, 3], fn = (x) => x
+Output: [1, 2, 3, 4, 5]
+Explanation: fn simply returns the number passed to it so the array is sorted in ascending order.
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Example 2:

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+Input: arr = [{"x": 1}, {"x": 0}, {"x": -1}], fn = (d) => d.x
+Output: [{"x": -1}, {"x": 0}, {"x": 1}]
+Explanation: fn returns the value for the "x" key. So the array is sorted based on that value.
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Example 3:

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+Input: arr = [[3, 4], [5, 2], [10, 1]], fn = (x) => x[1]
+Output: [[10, 1], [5, 2], [3, 4]]
+Explanation: arr is sorted in ascending order by number at index=1. 
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Constraints:

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