Shangri-La

/** * Definition for singly-linked list. * public class ListNode { * int val; * ListNode next; * ListNode(int x) { val = x; } * } */public class Solution {public ListNode swapP

Given a binary tree containing digits from 0-9 only, each root-to-leaf path could represent a number.An example is the root-to-leaf path 1->2->3 which represents the number 123.Find the total sum

public class Solution { public ListNode rotateRight(ListNode head, int k) { if(head==null){ return head; } int length = getListLength(head); k =k%lengt