Class Solution


  • public class Solution
    extends Object
    777 - Swap Adjacent in LR String.

    Medium

    In a string composed of 'L', 'R', and 'X' characters, like "RXXLRXRXL", a move consists of either replacing one occurrence of "XL" with "LX", or replacing one occurrence of "RX" with "XR". Given the starting string start and the ending string end, return True if and only if there exists a sequence of moves to transform one string to the other.

    Example 1:

    Input: start = “RXXLRXRXL”, end = “XRLXXRRLX”

    Output: true

    Explanation:

     We can transform start to end following these steps:
     RXXLRXRXL ->
     XRXLRXRXL ->
     XRLXRXRXL ->
     XRLXXRRXL ->
     XRLXXRRLX 
    

    Example 2:

    Input: start = “X”, end = “L”

    Output: false

    Constraints:

    • 1 <= start.length <= 104
    • start.length == end.length
    • Both start and end will only consist of characters in 'L', 'R', and 'X'.
    • Constructor Detail

      • Solution

        public Solution()
    • Method Detail

      • canTransform

        public boolean canTransform​(String start,
                                    String end)