Number of Ways to Split Array LeetCode solution in JavaScript

1
/**
2
 * @param {number[]} nums
3
 * @return {number}
4
 */
5
var waysToSplitArray = function (nums) {
6
  let result = 0;
7
  let letsum = 0;
8
  let rightsum = nums.reduce((a, b) => a + b);
9
  let end = nums.length - 1;
10
  for (let i = 0; i < end; i++) {
11
    letsum += nums[i];
12
    rightsum -= nums[i];
13
    if (letsum >= rightsum) {
14
      result++;
15
    }
16
  }
17
  return result;
18
};