My JS algorithm pit crawl – finds the first and last positions of elements in a sorted array

Day 55: find the first and last position of an element in a sorted array

Address: leetcode-cn.com/problems/fi…

IndexOf and lastIndexOf

var searchRange = function(nums, target) {
  return nums.indexOf(target) !== -1 ? [nums.indexOf(target), nums.lastIndexOf(target)] : [-1, -1];
};
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Execution time: 72 ms, beating 98.02% of all JavaScript commits

Memory consumption: 38.9 MB, beating 61.46% of all JavaScript commits