Koko Eating Bananas LeetCode solution in JavaScript

1
var minEatingSpeed = function (piles, h) {
2
  /*The range of bananas that Koko can eat is k = 1 to Max(piles)*/
3
  let startk = 1;
4
  let endk = Math.max(...piles);
5

6
  while (startk <= endk) {
7
    let midk = Math.floor(startk + (endk - startk) / 2);
8
    /*midk are the count of bananas that koko decide to eat. 
9
        So how many hours she will take to finish the piles?*/
10
    let hrs = 0;
11
    for (let pile of piles) {
12
      /*pile is the num of bananas in piles*/
13
      hrs += Math.ceil(pile / midk);
14
    }
15
    if (hrs > h) {
16
      /*Now if hrs > h she will not be to finish the pile so we have 
17
            to increase the bananas by moving start.*/
18
      startk = midk + 1;
19
    } else {
20
      /*If hrs <= h she will be eating too fast so we can reduce the bananas 
21
            so she eats slowly. So decrement end.*/
22
      endk = midk - 1;
23
    }
24
  }
25
  return startk;
26
};