Find Minimum and Maximum

Problem

Given an array of integers arr, return an array containing the minimum and maximum values in arr.

Examples

findMinMax([1, 5, 9, 15]);
// returns [1, 15]

findMinMax([0, 5, 8, 12]);
// returns [0, 12]

findMinMax([-10, -3, 2, 0, 4]);
// returns [-10, 4]

findMinMax([4, 4, 4, 4]);
// returns [4, 4]