如何使用JavaScript中的比较器选择数组中的最小/最大元素？

Question

I want to find the largest element in an array. For example, finding the person with the highest salary. I can sort the array using a salary comparator, but it is inefficient. What is the simplest and best way to do this?

For reference, I can do this in Python as follows.

heapq.nlargest(1, [array_of_whatever], comparator)[0]

Answer 1

This is what I would do:

 const maxBy = (comparator, array) => array.reduce((acc, val) => comparator(acc, val) > 0 ? acc : val); const employees = [ { name: "Alice", salary: 1000 } , { name: "Bob", salary: 2000 } , { name: "Charlie", salary: 1500 } ]; const salaryComparator = (a, b) => a.salary - b.salary; const max = maxBy(salaryComparator, employees); console.log(max); 

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