class Solution {
    public boolean canTransform(String start, String end) {
        ArrayList<Character> array = new ArrayList<Character>();

        start = start.replaceAll("\"", "").replace("\\", "").replace("\\", "");
        end   = end.replaceAll("\"", "").replace("\\", "").replace("\\", "");

        String rl_start = start.replaceAll("X", "");
        String rl_end  = end.replaceAll("X", "");

        if (!rl_start.equals(rl_end)) { return false; }
        if (start.length() != end.length()) { return false; }

        Stack<Character> stack = new Stack<Character>();
        for (int i = 0; i < start.length(); i++) {
            if (start.charAt(i) == 'R') { stack.push(start.charAt(i)); }
            if (end.charAt(i) == 'R') {
                if (stack.empty()) {
                    return false;
                } else {
                    stack.pop();
                }
            }
        }

        stack = new Stack<Character>();
        for (int i = 0; i < start.length(); i++) {
            if (end.charAt(i) == 'L') { stack.push(end.charAt(i)); }
            if (start.charAt(i) == 'L') {
                if (stack.empty()) {
                    return false;
                } else {
                    stack.pop();
                }
            }
        }

        return true;
    }
}