# class ListNode: # def __init__(self, x): # self.val = x # self.next = None # # 代码中的类名、方法名、参数名已经指定,请勿修改,直接返回方法规定的值即可 # # # @param pHead ListNode类 # @param k int整型 # @return ListNode类 # class Solution: def FindKthToTail(self , pHead , k ): # write code here node = pHead n = 0 while(node): node = node.next n+=1 result = None if n < k: return result elif n == k: return pHead else: m = n-k for i in range(m): pHead = pHead.next return pHead