Search for a range in an ascending order array

search-for-a-range.js

/**
 * Created by Hoan Nguyen on 11/8/2017.
 * https://leetcode.com/problems/search-for-a-range/description/
 */
var searchRange = function(nums, target) {
	var found = false;
	var res = [];

	for (var i = 0; i < nums.length; i++) {
		if (nums[i] == target) {
			if (!found) {
				res.push(i);
				found = true;
			}
			else {
				if (nums[i] !== nums[i + 1]) res.push(i);
			}
		}
	}


	return found ? res.length === 2 ? res : [res[0], res[0]] : [-1, -1];
};

//TEST

var nums = [5, 7, 7, 8, 8, 10];
var target = 8;
console.log(searchRange(nums, target));
console.log(searchRange([1], 1));