Boats to Save People LeetCode solution in JavaScript

1
/**
2
 * @param {number[]} people
3
 * @param {number} limit
4
 * @return {number}
5
 */
6
var numRescueBoats = function (people, limit) {
7
  people = people.sort((a, b) => a - b);
8

9
  let left = 0;
10
  let right = people.length - 1;
11
  let res = 0;
12

13
  while (left <= right) {
14
    if (people[left] + people[right] <= limit) {
15
      res++;
16
      right--;
17
      left++;
18
    } else if (people[right] <= limit) {
19
      res++;
20
      right--;
21
    }
22
  }
23

24
  return res;
25
};