1
/**
2
 * @param {string} start
3
 * @param {string} end
4
 * @return {boolean}
5
 */
6
var canTransform = function (start, end) {
7
  let i = 0;
8
  let j = 0;
9

10
  while (i < start.length || j < end.length) {
11
    if (start[i] === "X") {
12
      i++;
13
      continue;
14
    }
15

16
    if (end[j] === "X") {
17
      j++;
18
      continue;
19
    }
20

21
    // Breaking (1)
22
    if (start[i] !== end[j]) return false;
23

24
    // Breaking (2)
25
    if (start[i] === "R" && i > j) return false;
26

27
    // Breaking (3)
28
    if (start[i] === "L" && j > i) return false;
29

30
    i++;
31
    j++;
32
  }
33

34
  return true;
35
};