Maximum Score After Splitting a String LeetCode solution in JavaScript

1
/**
2
 * @param {string} s
3
 * @return {number}
4
 */
5
var maxScore = function (s) {
6
  const length = s.length;
7
  let ones = 0;
8
  let tmpScore = s[0] === "0" ? 1 : 0;
9
  let score = tmpScore;
10

11
  for (let i = 1; i < length - 1; i++) {
12
    if (s[i] === "0") {
13
      tmpScore += 1;
14
    } else {
15
      ones += 1;
16
      tmpScore -= 1;
17
    }
18

19
    if (tmpScore > score) {
20
      score = tmpScore;
21
    }
22
  }
23

24
  ones += s[length - 1] === "1" ? 1 : 0;
25

26
  return ones + score;
27
};